Buffer Block S8T-DCBU-02 CSM_S8T-DCBU-02_DS_E_9_1 Prevents Equipment Stoppage, Data Loss, and Other Problems Resulting from Momentary Power Failures • Provides a backup time of 500 ms at an output current of 2.5 A. Can be wired to the 24-V output from the S8VS Supplies. Connects to an S8TS Power Supply via an S8T-BUS03 Bus Line Connector. Parallel connections to up to four Blocks can be used to increase the backup time and current capacities. Complies with SEMI F47-0200 standard. RoHS-compliant Ambient operating temperature range of –20 to 60°C. S8T-DCBU-02 S8TS For the most recent information on models that have been certified for Refer to Safety Precautions for All Power Supplies and Safety safety standards, refer to your OMRON website. ! Precautions on page 16. Ordering Information ■ Buffer Block Input voltage Output voltage Output current Model number (during backup operation) 24 VDC (24 to 28 VDC) 22.5 V 2.5 A S8T-DCBU-02 ■ Options (Order Separately) Bus Line Connector (Connects to Buffer Block) Type Number of Connectors Model number Connector with DC line connected. 1 Connector S8T-BUS03 10 Connectors (See note.) S8T-BUS13 Note: One package contains 10 S8T-BUS03 Connectors. Basic Configuration Connecting to the S8TS-06024@ Connection via Wiring Connect to AC lines. Connect to AC lines. S8TS-06024@ (Order separately.) S8T-BUS03 Bus Line Connector (Order separately.) S8T-DCBU-02 Load Load 1 S8T-DCBU-02 Specifications ■ Ratings/Characteristics Item Model S8T-DCBU-02 Input Voltage 24 to 28 VDC Current Charging 0.4 A Standby 0.18 A Output Backup Output voltage For 24 V: 22.5 V typ., 22.0 V min. (See note 1.) operation For 28 V: 26.4 V typ., 25.8 V min. Output current 2.5 A Backup time Time required until the voltage drops from the fully charged level down to 21.6 VDC (See note 2.) 1,000 ms min. (for an output current of 1.2 A) 500 ms min. (for an output current of 2.5 A) Additional Output READY indicator Yes (color: green) functions functions READY output Yes (relay: 24 VDC, 0.1 A max.) (See note 3.) Backup indictor Yes (color: red) Backup output Yes (relay: 24 VDC, 0.1 A max.) Overcurrent protection Reverse-L dropping, automatic reset, overcurrent detection point: 5.8 to 6.8 A Overvoltage protection Yes Parallel operation Yes (Up to 4 Blocks) Series operation No Other Ambient operating temperature Refer to the derating curve in Engineering Data. (with no condensation or icing) Storage temperature −25 to 65°C Ambient humidity Operating: 25% to 85%; Storage: 25% to 90% Dielectric strength (See note 4.) 1.0 kVAC for 1 minute (between all DC connection terminals and PE terminals; Detection current: 20 mA) 500 VAC for 1 minute (between all DC connection terminals/PE terminals and all signal output terminals; detection current: 20 mA) Insulation resistance 100 MΩ min. (between all DC connection terminals and PE terminals) at 500 VDC Vibration resistance (See notes 5 and 6.) 10 to 55 Hz, 0.375-mm single amplitude for 2 h each in X, Y, and Z directions 2 Shock resistance (See notes 5 and 6.) 150 m/s , 3 times each in ±X, ±Y, and ±Z directions EMI Conducted Emission Conforms to EN61204-3 EN55011 Class B and based on FCC Class A (See note 5.) Radiated Emission Conforms to EN61204-3 EN55011 Class B EMS Conforms to EN61204-3 High severity levels Approved UL: UL508 (Listing; Class 2: Per UL1310) (See note 7.), UL60950-1 standards cUL: CSA C22.2 No.14 (Class 2: Per No. 223) (See note 7.), cUR: CSA No. 60950-1 EN/VDE: EN50178 (= VDE0160), EN60950-1 (= VDE0805 Teil 1) SEMI SEMI F47-0200 Weight 450 g max. Note: 1. The output characteristics are specified at the power output terminals. 2. Refer to Backup Time on page 10 for details. 3. Refer to Functions on page 7 for details. 4. If the number of S8T-DCBU-02 Buffer Blocks to be connected is “N,” set the detection current to 20 mA × N. 5. Specified by S8TS-06024@ connection. 6. Be sure to mount an End Plate (PFP-M: Order separately) on each end of the Buffer Block. Refer to DIN Rails on page 15. 7. To comply with Class 2, connect one S8TS-06024@ to one S8T-DCBU-02 Buffer Block. ■ Reference Value Item Value Definition Reliability 135,000 hrs MTBF stands for Mean Time Between (MTBF) min. Failures, which is calculated according to the probability of accidental device fail- ures, and indicates reliability of devices. Therefore, it does not necessarily repre- sent a life of the product. Life 10 yrs. min. The life expectancy indicates average op- expectancy erating hours under the ambient tempera- ture of 40°C and a load rate of 50%. Normally this is determined by the life ex- pectancy of the built-in aluminum electro- lytic capacitor. 2 S8T-DCBU-02 Connections ■ Block Diagram S8T-DCBU-02 Reverse flow Detection Discharging circuit prevention diode resistor Electrolytic capacitor +V Reverse Reverse + Charging connec- DC input/output connection circuit tion − protection Drive circuit Drive circuit protection −V Discharg- Charging ing control control circuit circuit Voltage Overvoltage detection 1 detection Overcurrent Voltage detection detection 2 Voltage detection Voltage detection BACKUP output BACKUP status detection Voltage detection READY output Voltage detection Connected to Connected DC (+) Bus Line to Bus Line Connector Connector DC (−) Operation ■ Application 2. When connected to the S8VS-06024, S8VS-12024, Connectable Power Supplies S8VS-18024, S8VS-24024, or S82J-10024@@ Power Supply, the output voltage may increase by approximately 4 V for The following Power Supplies can be connected. When connected to several 10 s of milliseconds after recovery from the momentary the following Power Supplies, the Buffer Block will function properly power failure. If any adverse effect is foreseen, connect a diode against a momentary power failure of at least 300 ms. (See note 1.) as shown below based on the guidelines given below. S8TS Series: S8TS-06024@ S8VS Series: S8VS-01524, S8VS-03024, AC inp ut S8VS-06024 (See note 2.), S8VS-06024A/B, S8VS-09024, S8VS-09024S, S8VS-09024A@/B@, 4 V S8VS-12024 (See note 2.), S8VS-12024A@/B@, I/O terminal voltage S8VS-18024 (See note 2.), S8VS-18024A@/B@, S8VS-24024 (See note 2.), S8VS-24024A@/B@, and S8VS-48024A/B S8JX Series: S8JX-N01524@@, S8JX-N03024@@, S8JX-N05024@@, S8JX-N10024@@, Guidelines for Selecting Diode S8JX-N15024@@, S8JX-N30024@@, Type: Schottky barrier diode S8JX-N60024@@ Withstanding voltage (V ): At least twice the rated output voltage RRM S8VM Series:S8VM-01524@@, S8VM-03024@@, S8VM-05024@@, Forward current (I ): At least twice the rated output current F S8VM-10024@@, S8VM-15024@@, S8VM-30024C, S8VM-60024C, and S8VM-15224C S8T-DCBU-02 Note: 1. The backup current must be less than 5 A (parallel operation Power Supply connection is required if the backup current exceeds 2.5 A) and the Buffer Block must be fully charged. If three or more S8T-DCBU-02 Buffer Blocks are used in parallel operation and the backup current exceeds 5 A, the momentary power failure time that can be compensated for will be reduced. − + Diode 3 S8T-DCBU-02 3. Calculating the Required Output Capacity Power Supply To Be Connected Determine the rate of allowance and apply this allowance rate to the total The power consumption of the S8T-DCBU-02 is approximately 10 W, capacity calculated above to obtain the output capacity required by the so make sure that the output capacity of the connected Power Power Supply. Be sure to provide a sufficient allowance rate. Supply is sufficient. Calculation of the Total Power Supply Capacity If the S8T-DCBU-02 is connected to a previously installed power Required supply, the voltage may drop due to the power supply's overload Total Allow- output capacity protection, or backup operations may not be possible. capacity ance > ÷ (W) of the Note: Connect a Power Supply within the specified derating range, (W) rate Power Supply considering the power consumption of the S8T-DCBU-02. Example: Output voltage: 24 V Capacities of devices: 36 W (output current: 1.5 A) Selecting the Power Supply Allowance rate: 0.8 Required output capacity of the Power Supply > (36 W + 9.6 W) ÷ 0.8 = 57 W Determining the Output Capacity Therefore, an S8TS-06024@ Power Supply, Check capacities of devices to be S8VS-06024@ Power Supply, or a Power Supply with a connected. larger capacity is required. Calculate the total of these capacities. Selecting the Power Supply To Be Connected 1. Checking the Output Hold Time and Restart Time of Calculate the required capacity. the Connected Power Supply The relation between the momentary power failure time and the backup time required to compensate the failure is shown in the following illustration. As shown by the illustration, the backup time required from the S8T-DCBU-02 Buffer Block depends on the connected Power Supply Selecting the Power Supply even for the same momentary power failure time. Check the output hold time and restart time. Calculation of the Required Backup Time Momen- Restart time Output hold Required tary power Select an appropriate Power Supply. > + of Power − time of Power failure backup time Supply Supply time Check the derating curve. Relation between Momentary Power Failure and Backup Time Momentary power failure time Determining the Output Capacity AC inp ut 1. Checking Capacities of Devices To Be Connected Check the capacities (W) of the devices to be connected. I/O terminal voltage 2. Calculating the Total Capacity (Including That of the S8T-DCBU-02 Buffer Block) The S8T-DCBU-02 Buffer Block will consume the following power. Restart time of Output hold time of Backup time Power Supply Add this to the above capacities (W) of the devices to be Power Supply connected to obtain the total capacity. The output hold time and restart time of each Power Supply are shown in Vin = 24 V: 9.6 W max. (during charging) Power Supply Output Hold Times (Reference Values) on page 12 and Vin = 28 V: 11.2 W max. (during charging) Power Supply Restart Times (Reference Values) on page 13. Example: S8T-DCBU-02: 1 Unit Calculation of the Total Capacity Connected Power Supply: S8TS-06024@ Load current: 1 A Total Capacities Power consump- AC input voltage: 200 VAC capacity = of devices + tion (W) of the Assumed momentary power failure time: 300 ms (W) (W) S8T-DCBU-02 Required backup time > 300 ms + 270 ms - 100 ms = 470 ms Refer to the graphs under Backup Time on page 10 to check whether the backup time is sufficient. 2. Selecting the Power Supply After obtaining the output capacity required for the Power Supply and checking its output hold time and restart time as described above, select an appropriate Power Supply from the list under Connectable Power Supplies on page 3. 3. Checking the Derating Curve Confirm that the total output capacity calculated in step 2, Calculating the Total Capacity, under Determining the Output Capacity is within the derating curve of the Power Supply. If the capacity exceeds the derating curve, increase the Power Supply capacity or use forced air cooling to reduce the ambient operating temperature. 4 S8T-DCBU-02 Mounting Input Voltage Mounting Direction Input voltage range: 24 to 28 VDC Confirm that an input voltage of at least 24 V is being supplied to the Standard mounting Yes S8T-DCBU-02 input terminals. Face-up mounting No Other mounting No Output Voltage Improper mounting will interfere with heat dissipation and may The output voltage for the backup operation is automatically adjusted occasionally result in deterioration of or damage to internal parts. internally by detecting the input voltage. The backup operation is Use standard mounting only. started when the input voltage drops 2 V. Note: The output voltage during the backup operation is a maximum Standard mounting Face-up mounting of 2 V lower than the voltage input at an input voltage of Correct Incorrect 24 VDC. Serial Connection Two Blocks cannot be connected in series to increase the output voltage to 48 V or to create positive and negative outputs. Parallel Connection The output current and backup time for the backup operation can be Connecting to the S8TS-06024@ increased by connecting Buffer Blocks in parallel. When connecting one or more S8T-DCBU-02 Blocks to the Maximum number of Buffer Blocks for parallel operation: 4 S8TS-06024@ using Bus Line Connectors, connect them to either When connecting the S8T-DCBU-02 with a Bus Line Connector, use the left or right end of the Blocks. Heat dissipation will be interfered the S8T-BUS03 Bus Line Connector, which connects only the DC with if the S8T-DCBU-02 Blocks are not connected to the end. lines. (The AC lines are not connected.) If the backup current exceeds 5 A when three or more Buffer Blocks are connected in Correct Correct Incorrect parallel, the backup time will be greatly reduced. Refer to Backup S8T-DCBU-02 S8T-DCBU-02 S8T-DCBU-02 Time on page 10 for details on the backup time during parallel operation. L N L N L N L N L N I50/60Hz NPUT I50/60Hz NPUT I50/60Hz NPUT I50/60Hz NPUT I50/60Hz NPUT AC100 AC100 AC100 AC100 AC100 -240V -240V -240V -240V -240V 1.0A 1.0A 1.0A 1.0A 1.0A Note: Although the number of Buffer Blocks that can be connected L L L L L N N N N N +V +V +V +V +V -V -V -V -V -V when using the S8TS-06024@ is five when calculated from the DC ON DC ON DC ON DC ON DC ON Class2 Class2 Class2 Class2 Class2 S Poupply wer S Poupply wer S Poupply wer S Poupply wer S Poupply wer DC LOW DC LOW DC LOW DC LOW DC LOW V.ADJ OUTPUT V.ADJ OUTPUT V.ADJ OUTPUT V.ADJ OUTPUT V.ADJ OUTPUT DC24V DC24V DC24V DC24V DC24V 2.5A 2.5A 2.5A 2.5A 2.5A DC LOW -V +V DC LOW -V +V DC LOW -V +V DC LOW -V +V DC LOW -V +V current capacity of the Bus Line Connector, only a maximum of four S8T-DCBU-02 can actually be connected in parallel. Connecting to S8TS-06024@ When connecting to the S8TS-06024@, always use the S8T-BUS03 Bus Line Connector. This Connector connects only the DC lines. It does not connect AC lines. Wiring Connections A load can be connected to either the Power Supply side or the S8T-BUS03 Bus Line Connector S8T-DCBU-02 side. The S8T-BUS03 Bus Line Connector is equipped with a selector to S8TS-06024@ S8TS-06024@ prevent incorrect connection to a power supply unit with a different output voltage specification. Slide the selector to the 24 V position. L N L N 50/60Hz INPUT 50/60Hz INPUT AC100 AC100 -240V -240V 1.0A 1.0A L N L N +V +V -V -V DC ON DC ON Class2 Class2 Power Power DC LOW Supply DC LOW Supply V.ADJ OUTPUT V.ADJ OUTPUT DC24V DC24V 2.5A 2.5A DC LOW -V +V DC LOW -V +V Selector Note: Use the largest wire size possible and keep the wiring distance as short as possible. If the voltage drop caused by the wiring material is too large, the backup operation may not be sufficient. 5 S8T-DCBU-02 Operation Check and Periodic Inspection Inserting and Removing the Bus Line H5CX-A Connector Digital Timer Pay attention to the following points to maintain electric characteristics. • Do not insert and remove a Bus Line Connector more than 20 times. Do not touch the Bus Line Connector terminals. SW E mode: Set for NPN input. To remove a Bus Line Connector, insert a flat-blade screwdriver alternately at both ends. 6 7 8 9 10 Not Not Not used used used 11 12 13 1 2 3 4 5 AC Mounting to DIN Rail To mount the Buffer Block to DIN Rail, hook portion (A) of the Buffer Block onto the Rail and press the Buffer Block in direction (B). (A) Load 4. Check to confirm that the expected backup operation was performed. The operation of the BACKUP indicator and BACKUP output should be as shown below during the backup operation. (B) Check these as well. To dismount the Buffer Block, pull down portion (C) with a flat-blade BACKUP Indicator BACKUP output relay screwdriver and pull out the Buffer Block. 3 BACKUP 4 Indicator lit Relay (BACKUP) (BACKUP: Red) (3)-(4): closed Note: Check the backup operation under conditions that are safe and 30 mm min. will cause no problems if the backup operation fails. (C) Rail stopper Checking Operation and Periodic Inspection After connecting the Buffer Blocks, check the Buffer Block using the following procedure to confirm that it operates correctly for momentary power failures on the AC input. Use this procedure for periodic inspection as well. 1. Turn ON the AC power of the connected power supply. 2. Check the READY indicator on the S8T-DCBU-02 to confirm that it is lit. READY Indicator READY output relay 1 READY 2 Indicator lit Relay (READY) (READY: Green) (1)-(2): open Note: Up to 60 seconds is required to charge the internal capacitor before the indicator lights. 3. Use a timer and create a momentary power failure on the AC input of the expected length of time. Considering variations in characteristics, using 140% or more of the power failure time is recommended. 6 S8T-DCBU-02 The READY indicator and READY output will function as shown ■ Functions below when the internal capacitor is being charged. READY Indicator READY output relay READY Operation The READY indicator and READY output will function as shown 1 READY below after the internal capacitor is completely charged and the 2 Buffer Block is ready to perform the backup operation. Up to 60 seconds is required for the capacitor to charge completely. Indicator not lit Relay (READY) (READY: Green) (1)-(2): closed READY Indicator READY output relay Note: 1. The contact capacity of the output relay is 0.1 A at 24 VDC. 2. The backup operation may be repeatedly performed if the 1 READY connected power supply is overloaded. Remove the cause 2 of the overload immediately. 3. The backup operation does not detect drops in the AC input. Indicator lit Relay (READY) (READY: Green) (1)-(2): open Overload Protection The following status will occur if there is an error in the charge voltage of the internal capacitor or the output voltage of the The S8T-DCBU-02 is provided with an overload protection function S8T-DCBU-02. that protects the Power Supply from possible damage due to short- circuits and overcurrents by automatically decreasing the output if READY Indicator READY output relay the overcurrent reaches 5.8 to 6.8 A. When the output current falls within the rated range, the overload protection function is 1 automatically cleared. READY Note: Internal parts may occasionally deteriorate or be damaged if a 2 short-circuited or other overcurrent state continues during operation. Indicator not lit Relay (READY) (READY: Green) (1)-(2): closed The backup operation will not be sufficient or will fail under the above Overvoltage Protection status. If this status occurs, immediately remove the cause of the If a voltage that is higher than the specified input voltage range is error, such as the following causes. input or the output voltage exceeds the specified voltage, the 1. The connected DC voltage is 23 V or less. overvoltage protection circuit will operate at between 31 and 36 V to 2. The terminals have been connected in reverse, a wire is broken, shut OFF the output voltage and protect the load from damage due or wiring is otherwise not correct. to overvoltages. To reset the Buffer Block, turn OFF the input power 3. The overvoltage protection circuit has operated. for at least 1 minute and then turn it back ON. 4. The overcurrent protection circuit of the connected power supply Note: 1. Remove the cause of the overvoltage before turn the input has operated. power back ON. Note: The contact capacity of the output relay is 0.1 A at 24 VDC. 2. The backup operation will not be performed when the overvoltage protection is performed to shut OFF the output. Backup Operation Reverse Connection Protection The S8T-DCBU-02 will switch to the backup operation if a voltage drop is detected on the connected power supply. The S8T-DCBU-02 will be protected even if the positive and negative I/O terminals are connected in reverse. BACKUP Indicator BACKUP output relay 3 BACKUP 4 Indicator lit Relay (BACKUP) (BACKUP: Red) (3)-(4): closed When the backup operation functions, the energy in the internal capacitor will be discharged to the load. When the voltage of the power supply then recovers, the S8T-DCBU-02 will start charging the capacitor. Up to 60 seconds is required to charge the capacitor completely. The backup operation may therefore not function for the required period if the backup operation starts while the capacitor is being charged. The following are examples in which the backup operation may not be sufficient. 1. The backup operation starts within 60 seconds after turning ON the power. 2. The backup operation is started consecutively within 60 seconds of the previous backup operation. 3. A rapid change in the load or other factor causes the DC voltage to drop, resulting in the backup operation, and then the backup operation occurs again within 60 seconds. 7 S8T-DCBU-02 Nomenclature Buffer Block S8T-DCBU-02 7 8 1 2 3 4 5 6 13 14 12 9 10 11 14 A, B: READY Output: NC contact I: Protective Earthing Terminal ( ) C, D: BACKUP Output: NC contact J: I/O Terminal (−V) E: READY Indicator (READY: Green) K: I/O Terminal (+V) F: BACKUP Indicator (BACKUP: Red) L: Rail Stopper G: NC M: Connecting part of Bus Line Connector H: Slider N: Terminal Cover Bus Line Connector S8T-BUS03 A: Selector B: Bus Line Connector terminal C: NC D: DC Bus Line Connector Terminal (+V) E: DC Bus Line Terminal (−V) 8 S8T-DCBU-02 Engineering Data ■ Derating Curve Note: 1. If natural air circulation is limited, use the forced air cooling to prevent overheating. 2. The ambient temperature is measured at a point 50 mm below the Buffer Block. 2.5 3. Check the derating curve for each power supply to be connected. Refer to Connections to the S8TS (Reference Values) on page 11 for details on the derating curves when connecting the Buffer Block to the S8TS-06024@. 2.0 1.5 1.0 0.5 −30 −20 −10 0 10203040506070 80 Ambient temperature (°C) ■ Time Charts Momentary Power Failure or Instantaneous Startup Voltage Drop AC input AC input Internal capacitor voltage Internal capacitor voltage I/O terminal voltage I/O terminal voltage Output current of the Output current of the S8T-DCBU-02 S8T-DCBU-02 open open READY output READY output closed closed READY indicator READY indicator open BACKUP output open closed BACKUP output closed BACKUP indicator BACKUP indicator Power supply output hold time Power supply restart time Backup time Charging time Power Supply Interrupted or Stopped AC input Internal capacitor voltage I/O terminal voltage Output current of the S8T-DCBU-02 open READY output closed READY indicator 2 seconds (typical) open BACKUP output closed BACKUP indicator Backup time 9 Current during backup operation (A) S8T-DCBU-02 ■ Backup Time Single Operation Parallel Operation with 2 Blocks 10 10 Vin = 28 V typical Vin = 24 V typical Vin = 24 V typical Vin = 24 V guaranteed Vin = 24 V guarantee 1 1 0.1 0.1 0.0 0.5 1.0 1.5 2.0 2.5 0.0 1.0 2.0 3.0 4.0 5.0 Load current (A) Load current (A) Parallel Operation with 3 Blocks Parallel Operation with 4 Blocks 10 10 Vin = 24 V typical Vin = 24 V typical Vin = 24 V guaranteed Vin = 24 V guaranteed 1 1 0.1 0.1 0.0 2.0 4.0 6.0 8.0 10.0 0.0 1.5 3.0 4.5 6.0 7.5 Load current (A) Load current (A) Note: 1. The backup time may be reduced if a fixed power load (such as a DC-DC converter) is connected. 2. If the input voltage increases, the output voltage for the backup operation will also increase, reducing the backup time due to the higher power consumption of the load. 10 Backup time (s) Backup time (s) Backup time (s) Backup time (s) S8T-DCBU-02 ■ Connections to the S8TS (Reference Values) Derating Curves of the S8TS-06024@ When Connecting to the S8T-DCBU-02 Note: 1. “+1” indicates the addition of one more S8TS-06024@ Basic Number of Number of S8TS-06024@ Derating Rated S8TS-06024@ S8T-DCBU-02 Block if a redundant system is used. rated input curve output Blocks Blocks power 2. If there is a derating problem, use forced air cooling. 3. The ambient temperature is specified at a place 50 mm 1 200 to 240 VAC 1 *1 50 W below the Product. 100 to 120 VAC 1 *2 50 W 4. The energy consumption of the S8T-DCBU-02 1 (+1) 100 to 120/200 1 *3 44 W (approximately 10 W per Block) from the S8TS-06024@ to 240 VAC 2 1 *4 110 W reduces the total output capacity when more than one S8TS-06024@ Block is connected. 2 (+1) 1 *5 98 W 5. The rated output current of the S8T-DCBU-02 is 2.5 A per 3 1 *6 170 W Block regardless of the number of S8TS-06024@ Basic 3 (+1) 1 *7 152 W Blocks that are connected. 4 1 *8 230 W 4 (+1) 1 *9 206 W 1 200 to 240 VAC 2 *10 40 W 100 to 120 VAC 2 *11 40 W 1 (+1) 100 to 120/200 2 *12 34 W to 240 VAC 2 2 *13 100 W 60 120 2 (+1) 2 *14 88 W *4 100 50 3 2 *15 160 W *5 3 (+1) 2 *16 142 W 80 40 *2 1 200 to 240 VAC 3 *17 30 W *3 60 30 100 to 120 VAC 3 *18 30 W 40 20 1 (+1) 100 to 120/200 3 *19 24 W to 240 VAC 2 3 *20 90 W 20 10 *1 2 (+1) 3 *21 78 W 0 0 1 200 to 240 VAC 4 *22 20 W –30 –20 –10 0 10 20 30 40 50 60 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) 100 to 120 VAC 4 *23 20 W Ambient temperature (°C) 45 180 250 120 *6 *13 160 40 *8 100 *11 200 35 140 *7 *9 120 30 80 *14 150 100 25 60 20 80 100 *12 60 15 40 40 10 50 20 *10 5 20 0 0 0 0 –30 –20 –10 0 10 20 30 40 50 60 –30 –20 –10 0 10 20 30 40 50 60 –30 –20 –10 0 10 20 30 40 50 60 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) Ambient temperature (°C) Ambient temperature (°C) Ambient temperature (°C) 25 180 35 100 *20 *15 90 160 30 *18 80 20 140 25 70 *16 120 *21 15 60 20 100 *22 50 80 15 40 10 *19 60 30 10 *23 40 5 20 *17 5 20 10 0 0 0 0 –30 –20 –10 0 10 20 30 40 50 60 –30 –20 –10 0 10 20 30 40 50 60 –30 –20 –10 0 10 20 30 40 50 60 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) Ambient temperature (°C) Ambient temperature (°C) Ambient temperature (°C) 11 Output power (W) Output power (W) Output power (W) Output power (W) Output power (W) Output power (W) Output power (W) Output power (W) Output power (W) Output power (W) S8T-DCBU-02 ■ Power Supply Output Hold Times (Reference Values) The rated currents are given for load currents. Series Model Load current Output hold time (ms) Series Model Load current Output hold time (ms) number (A) number (A) 100 VAC 200 VAC 100 VAC 200 VAC S8TS 06024@ 0.5 163 167 S8VM 01524@@ 0.1 94 414 198 100 0.2 66 308 1.5 70 70 0.25 52 258 2.1 56 58 03024@@ 0.1 154 492 S8VS 01524 0.1 114 472 0.2 114 516 0.2 78.4 344 0.3 84 414 0.25 68.8 300 0.4 72 340 03024 0.25 124 526 0.5 56 290 0.5 72 334 0.6 46 248 0.75 47.4 242 0.7 36 218 0.9 36.8 204 0.8 28 202 06024@ 0.5 158 664 0.9 22 166 188 382 05024@@ 0.1 218 218 1.5 57 266 0.2 164 170 2.1 36 194 0.4 114 110 09024@@ 1 118 508 0.6 84 84 258 274 0.8 68 72 2.95 34 176 1.0 58 54 12024@@ 1 262 262 1.2 44 44 2 148 148 1.4 36 38 3 102 102 1.6 34 32 475 75 1.8 28 30 4.2 72 72 10024@@ 0.5 240 232 18024@@ 2 225 230 1.0 136 132 4 107 120 1.5 94 92 671 75 2.0 70 70 6.3 65 70 2.5 52 56 24024@@ 2.5 170 170 3.0 40 44 568 72 3.5 38 38 7.5 52 56 3.7 32 30 8.4 40 44 15024@@ 0.5 332 334 48024@ 2.5 291 268 1.0 192 196 5.0 147 157 1.5 136 140 7.5 97 103 2.0 102 108 10.0 75 77 2.5 80 86 3.0 66 66 3.5 60 58 4.0 52 50 4.5 44 44 5.0 54 54 5.3 34 38 30024C 2.5 162 169 5.0 84 84 7.5 52 57 10.0 43 41 60024C 2.5 304 306 5.0 170 158 7.5 116 121 10.0 88 88 15224C 2.5 680 520 5.0 644 517 7.5 638 515 10.0 635 510 12 S8T-DCBU-02 ■ Power Supply Output Hold Times (Reference Values) The rated currents are given for load currents. Series Model number Load current (A) Output hold time (ms) 100 VAC 200 VAC S8JX N05024@@ 0.5 112 520 1 62 290 1.5 42 208 1.7 38 186 N10024@@ 1 104 524 2 58 288 3 36 184 3.7 30 150 N15024@@ 1.5 142 648 3 68 334 4.5 46 226 5.3 38 188 ■ Power Supply Restart Times (Reference Values) Series Model number Restart time (ms) Momentary power failure time: Momentary power failure time: Momentary power failure time: 300 ms 500 ms 1,000 ms 100 VAC 200 VAC 100 VAC 200 VAC 100 VAC 200 VAC S8TS 06024@ 320 270 320 270 345 290 S8VS 01524 5.4 5.6 6 4.8 6.2 5 03024 390 110 456 140 576 196 06024 330 8 424 200 496 300 06024A/06024B 220 5 280 95 380 155 09024/09024S 312 6 378 186 512 308 09024A@/09024B@ 220 5 286 100 390 157 12024@@ 360 248 400 288 432 322 18024 288 252 306 276 388 356 18024A@/18024B@ 230 198 247 216 263 235 24024 266 236 272 248 328 300 24024A@/24024B@555 515 5 48024@ 53 3 267 229 278 242 S8VM 01524@@ 356 152 376 164 420 180 03024@@ 350 150 372 160 420 184 05024@@ 240 196 248 196 270 216 10024@@ 248 208 256 208 280 220 15024@@ 250 226 272 216 300 236 30024C 62 48 64 50 74 60 60024C 366 198 380 200 436 276 15224C 556 472 568 480 576 488 S8JX N05024@@ 180 120 204 138 280 172 N10024@@ 186 128 210 144 268 106 N15024@@ 222 12 246 152 320 208 13 S8T-DCBU-02 Dimensions Note: All units are in millimeters unless otherwise indicated. ■ Buffer Block and Bus Line Connector Buffer Block S8T-DCBU-02 10 Slider 2.5 Six, M4 120±1 Square Washers Screw 100 120±1 35 80.7 10 116 Rail Stopper 43±1 5.6 5 (Sliding: 15 max.) Bus Line Connector S8T-BUS03 8.6 2 24 10 7.6 5.5 5 Sliding 13 70 5.5 2 Sliding 2.5 18 4 35 14 S8T-DCBU-02 ■ DIN Rails (Order Separately) Mounting Rails (Material: Aluminum) PFP-100N PFP-50N 7.3±0.15 4.5 35±0.3 27±0.15 15 25 25 25 25 15 (5)* 1 10 10 1,000 (500)* * Values in parentheses are for the PFP-50N. PFP-100N2 16 4.5 ±0.3 35 27 24 29.2 15 25 25 25 25 15 1 1.5 10 10 1,000 End Plate PFP-M 10 6.2 1.8 Eight, M4 pan-head screw 1 50 35.5 35.3 1.8 11.5 10 1.3 4.8 M4 spring washer 15 S8T-DCBU-02 Safety Precautions Refer to Safety Precautions for All Power Supplies. Mounting !CAUTION Improper mounting will interfere with heat dissipation and may occasionally result in deterioration or damage of internal parts. Use Installation and Environment the specified mounting method only. Minor fires may occasionally occur or wires may become Ensure sufficient heat dissipation when installing the Product to detached causing the backup operation to fail if screws increase its long-term reliability. are not tightened properly. Tighten terminal screws to a torque of 1.08 N·m so that they do not become loose. Natural cooling is used, so mount the S8T-DCBU-02 so that there is airflow around it. Minor electric shock may occasionally occur. Do not remove the connector cover unless connecting the Bus S8TS-06024@ S8T-DCBU-02 Line Connector. Minor electric shock may occasionally occur and the *1 *2 *1 *2 *1 backup operation will fail if the connector becomes L N L N INPUT INPUT 50/60Hz AC100 50/60Hz AC100 disconnected. Be sure to lock the slider and rail stopper -240V -240V 1.0A 1.0A L L N N securely when connecting the Basic Block and the S8T- +V +V - V - V DC ON DC ON Class2 Power Class Power 2 DC LOW Supply DC LOW Supply V.ADJ OUTPUT V.ADJ OUTPUT DCBU-02 to prevent the connector from being DC24 2.5A V DC24 2.5A V DC LOW -V +V DC LOW -V +V disconnected due to vibration. *1 *1 *1 *3 *3 Internal parts may occasionally deteriorate or be damaged and the backup operation may not be *4 *4 sufficient. Do not use the S8T-DCBU-02 for applications that subject the load to frequent inrush currents or *1. Convention of air *3. 75 mm min. *2. 75 mm min. *4. 20 mm min. overload currents. The S8T-DCBU-02 may occasionally be damaged. Do Installation/Wiring not allow any clippings or cuttings to enter the S8T-DCBU-02 during mounting. Minor electric shock or malfunction may possibly occur. Connect the ground wire completely. Operation Minor fires may possibly occur. Check the terminals to be sure they are wired correctly. Minor burns may occasionally occur. Do not touch the S8T-DCBU-02 while power is being supplied or Do not apply more than 100-N force to the terminal block when immediately after power is turned OFF. tightening the terminals. Minor electric shock may occasionally occur. Do not add Close the terminal cover to help prevent short-circuiting terminals or remove the S8T-DCBU-02 while power is being with foreign objects. supplied. Be sure to remove the sheets covering the S8T-DCBU-02 for machining before turning ON the power so that they do not interfere with heat dissipation. Maintenance Use the wiring material specified in the following table to protect wires from smoking or ignition due to abnormal loads. Also, the Minor electric shock may occasionally occur. Do not backup operation may not be sufficient due to voltage drop in the disassemble the S8T-DCBU-02 or touch the interior of wiring material if thin wiring materials are used. the S8T-DCBU-02. I/O Terminals ■ Precautions for Safe Use Load Number of Recommended wire diameter Observe the following precautions to ensure safety when using the current connected S8T-DCBU-02 S8T-DCBU-02. Up to 2.5 A 1 AWG 14 to 20 (cross-sectional 2 area: 0.517 to 2.081 mm ) Setting and Selecting Power Supply to Up to 5.0 A 2 AWG 14 to 18 (cross-sectional be Connected 2 area: 0.823 to 2.081 mm ) Do not connect a power supply other than the ones specified below. Up to 7.5 A 3 AWG 14 to 16 (cross-sectional 2 area: 1.309 to 2.081 mm ) Specified Power Supply (SELV Power Supply): Up to 10 A 4 AWG 14 (cross-sectional area: S8TS Series, S8VS Serie. 2 2.081 mm ) Only power supplies with an output voltage of 24 V and an output capacity of 9.6 W or more can be connected. Signal output terminals: AWG 16 to 22 (Cross-sectional area: 2 When selecting the power supply to be connected, take both the 0.326 to 1.309 mm ) operation current and power of S8T-DCBU-02 into consideration, (Wire stripping length: 11 mm) allowing sufficient margin. Installation Environment Do not use the S8T-DCBU-02 in locations subject to shocks or vibrations. In particular, install the S8T-DCBU-02 as far away as possible from contactors or other devices that are a vibration source. Install a PFP-M End Plate on each end of the product. Install the S8T-DCBU-02 well away from any sources of strong, high- frequency noise and surge. 16 S8T-DCBU-02 Ambient Operating Environment and Storage Environment Store the S8T-DCBU-02 at an ambient temperature of −25 to +65°C, and a relative humidity of 25% to 90%. The internal parts may occasionally deteriorate or be damaged. Do not use the S8T-DCBU-02 outside the derating range (i.e., under conditions indicated by the shaded area ( ) in the derating curve diagram on page 9.) Use the S8T-DCBU-02 at a relative humidity of 25% to 85%. Do not use the S8T-DCBU-02 in locations subjected to direct sunlight. Do not use the S8T-DCBU-02 in locations where liquid, foreign mat- ter, or corrosive gases may enter the interior of the S8T-DCBU-02. Precautions in Using After connecting the devices to the S8T-DCBU-02, check whether sufficient backup is performed correctly by operating the S8T-DCBU-02. Check the load current using the actual system in advance to confirm that there is sufficient leeway in the backup time. Check to confirm that the READY indicator and the output function correctly. The backup operation may not be sufficient if the READY indicator and output do not function correctly. The S8T-DCBU-02 will perform the backup operation not only for momentary power failures or voltage drops, but also when the input power is OFF. The backup time is particularly long for light loads. Check the devices connected to the S8T-DCBU-02 to be sure it has stopped operation correctly. Periodic Inspection and Periodic Replacement The S8T-DCBU-02 contains built-in electrolytic capacitors, which have a limited life. Perform periodic inspection and replacement. The performance of the electrolytic capacitor will deteriorate as the total operating time increases, eventually leading to insufficient performance. Refer to the following guidelines for periodic replacement. Ambient Guideline of replacement temperature With space between Connected to S8TS the Units 30°C max. 15 years 15 years 40°C 12 years 8.5 years 50°C 6 years 5.5 years (See note.) 60°C3 years --- Note: The load ratio of the S8TS is limited to 60% due to the derating curve. Handling the Bus Line Connector Do not drop the Bus Line Connector or subject it to strong shock. Do not connect and disconnect the Bus Line Connector more than 20 times. Also, do not touch the terminals on the Bus Line Connector. Connection failure may cause deterioration of electric performance. 17 S8T-DCBU-02 Troubleshooting The following table lists the errors that may occur when the S8T-DCBU-02 is used, along with their probable causes and remedies. Check the relevant items. When Cause Description Remedies During installation The S8TS-06024@ and The Bus Line Connector is provided with a se- Set the selector on the S8T-BUS03 Bus Line S8T-DCBU-02 cannot be lector to prevent misconnection of 12-V and 5-V Connector to 24 V. connected. S8TS Blocks. Connection will not be possible if Refer to S8T-BUS03 Bus Line Connector on the selector is set for the wrong type of Block. page 5. When checking The S8TS-06024@ when The AC line is not connected by the Connect the S8T-DCBU-02 to the right or left operation connected does not oper- S8T-BUS03 Bus Line Connector when the S8T- end of the connected Blocks. Refer to Mounting (Refer to Checking ate in step 2 of the opera- DCBU-02 is connected. on page 5. Operation and Pe- tion checking procedure. The S8T-DCBU-02 may be connected between riodic Inspection two S8TS-06024@ Blocks. on page 6.) The READY indicator on Power is supplied via the S8T-BUS03 Bus Line Connect the S8T-DCBU-02 and S8TS-06024@ the S8T-DCBU-02 does not Connector when the S8T-DCBU-02 and S8TS using an S8T-BUS03 Bus Line Connector. Re- light in step 2 of the opera- are connected. The Bus Line Connector may fer to Basic Configuration on page 1. tion checking procedure not be connected. when connected to the A Bus Line Connector that does not connect the Connect the S8T-DCBU-02 and S8TS-06024@ S8TS. DC line (such as the S8T-BUS02) may be con- using an S8T-BUS03 Bus Line Connector. Re- nected. fer to Basic Configuration on page 1. The READY indicator on Up to 60 seconds is required to completely Check that the READY indicator lights after 60 the S8T-DCBU-02 does not charge the internal capacitor after the input seconds has passed since turning ON the input light in step 2 of the opera- power has been turned ON. The READY indica- power. Refer to READY Operation on page 7. tion checking procedure. tor will not turn ON immediately after the input power is turned ON. The positive and negative I/O terminals on the Check the wiring to be sure it is correct. The in- S8T-DCBU-02 may be connected in reverse or ternal circuits of the S8T-DCBU-02 will be pro- the power supply may be connected to an incor- tected even if the positive and negative rect terminal (e.g., an NC terminal). terminals are reversed. Correct the polarity and turn ON the power supply again. Refer to Re- verse Connection Protection on page 7. The voltage input to the S8T-DCBU-02 may be Check the I/O terminals on the S8T-DCBU-02 23 V or less. and adjust the voltage output using the output voltage adjuster (V. ADJ) of the connected pow- er supply so that it is 24 V or higher. Refer to In- put Voltage on page 5. Overcurrent protection on the connected power The S8T-DCBU-02 consumes 0.4 A, so the rat- supply may have operated and the voltage may ed current of the connected power supply can- have dropped to below 23 V. not be delivered completely to the load. Increase the capacity of the connected power supply. Refer to Selecting the Power Supply on page 4. The backup operation is not The restart time of the connected power supply The momentary power failure time differs from performed for the expected after recovery from momentary power failures the backup time required to compensate for it. backup time in step 4 of the may be too long. Change to a power supply with a shorter restart operation checking proce- time or connect S8T-DCBU-02 Blocks in parallel dure. to increase the backup time. Refer to Selecting the Power Supply on page 4. The voltage during the backup operation may The output voltage during the backup operation be high, increasing the power consumption dur- is automatically adjusted based on detecting ing the backup operation. the voltage input to the S8T-DCBU-02. Connect S8T-DCBU-02 Blocks in parallel to increase the backup time. Refer to Parallel Connection on page 5. The output current during the backup operation Connect S8T-DCBU-02 Blocks in parallel to in- may be higher than expected. crease the backup time. Refer to Parallel Con- nection on page 5. The voltage output for the Overcurrent protection on the connected power The S8T-DCBU-02 consumes 0.4 A, so the rat- backup operation is low in supply may have operated and the voltage input ed current of the connected power supply can- step 4 of the operation to the S8T-DCBU-02 may have dropped to be- not be delivered completely to the load. checking procedure. low 24 V. Increase the capacity of the connected power supply. Refer to Selecting the Power Supply on page 4. The wiring to the load is too long or too thin, Use the thickest wire and shortest distance pos- causing excessive voltage drop. sible. The output voltage during backup will be up to 2 V lower than the input voltage. Refer to Wiring Connections on page 5. When checking The voltage output for the Overcurrent protection may have operated on Allow for leeway for the load capacity in the ap- operation backup operation is low in the S8T-DCBU-02. plication or increase the output current during (Refer to Checking step 4 of the operation the backup operation by connecting Operation and Pe- checking procedure. S8T-DCBU-02 Blocks in parallel. Refer to Paral- riodic Inspection lel Connection on page 5. on page 6.) 18 S8T-DCBU-02 When Cause Description Remedies When checking The BACKUP indicator The output hold time of the connected power Use a timer to increase the power failure of the operation (Refer to does not light in step 4 of supply may be sufficient to handle the momen- AC input from the connected power supply and Checking Opera- the operation checking pro- tary power failure. confirm that the BACKUP indicator lights. Refer tion and Periodic cedure. to Selecting the Power Supply on page 4. Inspection on The voltage output from the S8T-DCBU-02 dur- Allow for leeway for the load capacity in the ap- page 6.) ing the backup operation may be lower because plication or increase the output current during overcurrent protection has operated in the the backup operation by connecting S8T-DCBU-02. S8T-DCBU-02 Blocks in parallel. Refer to Paral- lel Connection on page 5. During actual The READY indicator is not The input voltage to the S8T-DCBU-02 may be Check the voltage at the I/O terminals of the operation lit and the READY output is 23 V or less. S8T-DCBU-02 and adjust the voltage output us- OFF. ing the output voltage adjuster (V. ADJ) of the connected power supply so that it is 24 V or higher. Refer to Input Voltage on page 5. A voltage of approximately 31 V or higher may Clear the overvoltage protection (turn OFF the be input to the I/O terminals of the input power for 1 minute or longer and then turn S8T-DCBU-02, causing the overvoltage protec- it back ON). Refer to Overvoltage Protection on tion circuit to operate. page 7. The backup time has be- It's possible that momentary power failures are The backup time is measured when the built-in come shorter. occurring consecutively. electrolytic capacitors are fully charged. If mo- mentary power failures occur within one minute of each other, the charge will not be complete and the backup time will be shorter. Refer to Backup Operation on page 7. It's possible that the characteristics of the built- Electrolytic capacitors are built into the Block in electrolytic capacitors have deteriorated. and these capacitors have a limited life. When an electrolytic capacitor exceeds its useful life, its capacity will decrease and other characteris- tics will deteriorate. This will cause the backup time to be shorter. Refer to Operation Check and Periodic Inspection on page 6 and to Peri- odic Inspection and Periodic Replacement on page 17. There is chattering on the The input voltage of the S8T-DCBU-02 may be Check the voltage at the I/O terminals of the READY output. very close to 23 V. S8T-DCBU-02 and adjust the voltage output us- ing the output voltage adjuster (V. ADJ) of the connected power supply so that it is 24 V or higher. Refer to Input Voltage on page 5. The output voltage is not re- Protection on the connected power supply may Clear the protection function of the connected stored even after the power have operated, stopping the operation of the power supply. supply is restored following power supply. a momentary power failure. The backup operation is If more than one S8TS-06024@ Block is con- Replace the faulty S8TS-06024@ Block. performed repeatedly. nected, one of the Blocks may be faulty. An overcurrent status caused by load fluctua- Allow for leeway for the load capacity in the ap- tion may exist in the connected power supply. plication or increase the capacity of the con- nected power supply. Refer to Backup Operation on page 7. ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. In the interest of product improvement, specifications are subject to change without notice. 19 Terms and Conditions Agreement Read and understand this catalog. Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. Warranties. (a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron disclaims all other warranties, express or implied. (b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty, repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice, recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above warranty. See http://www.omron.com/global/ or contact your Omron representative for published information. Limitation on Liability; Etc. OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY. Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted. Suitability of Use. Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases. NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM. Programmable Products. Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence thereof. Performance Data. Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability. Change in Specifications. Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our practice to change part numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at any time to confirm actual specifications of purchased Product. Errors and Omissions. Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical or proofreading errors or omissions. 2016.6 In the interest of product improvement, specifications are subject to change without notice. OMRON Corporation Industrial Automation Company http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2016 All Right Reserved.