Heater Element Burnout Detector K2CU CSM_K2CU_DS_E_3_2 Accurate Detection of Heater Element Burnout Regardless of Heater Capacities • Accurately detects a burned heater element or elements incor- porated by a molding machine or packing machine and outputs an alarm signal. Precisely singles out the burned element even if one heater el- ement among several heater elements has been burned out. Applicable to small- to large-capacity heater elements. All K2CU-F large-capacity, built-in current transformer models work with both single-phase and three-phase heaters. Voltage fluctuation compensation function eliminates false alarms due to variations in the supply voltage. Model Number Structure ■ Model Number Legend K2CU-@@@-@@ 12 3 4 5 6 1. Heater Element Burnout Detector 4. Voltage Compensation 2. Operation None: Not provided F: Large-capacity, built-in Current Transformer model A: Provided P: Small-capacity plug-in model 5. Control Power Supply Voltage 3. Operating Current Range A: 100/200 VAC 0.5: 0.25 to 0.5 A B: 110/220 VAC 1: 0.5 to 1 A C: 100 VAC 2: 1 to 2 A D: 110 VAC 4: 2 to 4 A E: 200 VAC 10: 4 to 10 A F: 220 VAC 20: 8 to 20 A 6. Gate Input 40: 16 to 40 A None: Not provided 80: 32 to 80 A GS: Provided Ordering Information K2CU-F@@A-@GS Model with Gate Input Terminals Control supply voltage Operating current 4 to 10 A 8 to 20 A 16 to 40 A 32 to 80 A 100 VAC With voltage fluctuation compensation K2CU-F10A-CGS K2CU-F20A-CGS K2CU-F40A-CGS K2CU-F80A-CGS 110 VAC K2CU-F10A-DGS K2CU-F20A-DGS K2CU-F40A-DGS K2CU-F80A-DGS 200 VAC K2CU-F10A-EGS K2CU-F20A-EGS K2CU-F40A-EGS K2CU-F80A-EGS 220 VAC K2CU-F10A-FGS K2CU-F20A-FGS K2CU-F40A-FGS K2CU-F80A-FGS Note: A model with a gate input terminal is required to combine the K2CU with a temperature controller that uses PID control for temperature control of a heater. To do so, use a temperature controller with a voltage output. 1 K2CU K2CU-F Large-capacity, Built-in Current Transformer Models Control supply voltage Operating current 4 to 10 A 8 to 20 A 16 to 40 A 32 to 80 A 100 VAC With voltage fluctuation compensation K2CU-F10A-C K2CU-F20A-C K2CU-F40A-C K2CU-F80A-C 110 VAC K2CU-F10A-D K2CU-F20A-D K2CU-F40A-D K2CU-F80A-D 200 VAC K2CU-F10A-E K2CU-F20A-E K2CU-F40A-E K2CU-F80A-E 220 VAC K2CU-F10A-F K2CU-F20A-F K2CU-F40A-F K2CU-F80A-F K2CU-P Small-capacity, Plug-in Models Control supply voltage Operating current 0.25 to 0.5 A 0.5 to 1 A 1 to 2 A 2 to 4 A 100/ With voltage fluctuation compensation K2CU-P0.5A-A K2CU-P1A-A K2CU-P2A-A K2CU-P4A-A 200 VAC Without voltage fluctuation compensation --- K2CU-P1-A K2CU-P2-A K2CU-P4-A 110/ With voltage fluctuation compensation K2CU-P0.5A-B K2CU-P1A-B K2CU-P2A-B K2CU-P4A-B 220 VAC Without voltage fluctuation compensation --- K2CU-P1-B K2CU-P2-B K2CU-P4-B Specifications ■ Ratings Item K2CU-F K2CU-P Control supply voltage 100, 110, 200, 220 VAC 100/200, 110/220 VAC Rated frequency 50/60 Hz Carry current 1.25 times as large as each model’s maximum operating cur- 2.5 A for K2CU-P0.5A-A/-B; rent 5 A Operating voltage range 85% to 110% of control supply voltage Voltage fluctuation compensation 85% to 110% of control supply voltage 85% to 110% of control supply voltage (applicable only on range models with voltage fluctuation compensation) Operating current 4 to 10 A, 8 to 20 A, 16 to 40 A, 32 to 80 A (continuously vari- 0.25 to 0.5 A, 0.5 to 1 A, 1 to 2 A, 2 to 4 A (continuously vari- able) able) Releasing current 105% max. of operating current 110% max. of operating current Operate time 0.5 s max. (when current changes from 150% to 0%) Gate input voltage range (for models 5 to 30 VDC --- with gate input terminals) Control output 2 A at 220 VAC, SPDT (cosφ = 0.4) Power consumption Input: 0.5 VA max. Input: 1 VA max. Power supply: 5 VA max. Power supply: 4 VA max. ■ Characteristics Setting accuracy ±7% max. Repeat accuracy ±3% max. Influence of temperature ±10% max. (at 20°C±30°C) Influence of voltage Models without voltage fluctuation compensation: ±3% max. of the value measured at the control supply voltage, on condition that the voltage fluctuation is 85% to 110% of the control supply voltage Models with voltage fluctuation compensation: ±5% max. of the logical value, on condition that the voltage fluctuation is 85% to 110% of the control supply voltage. (see note) Influence of frequency ±3% max. (at ±5% of rated frequency) Insulation resistance 10 MΩ min. (at 500 VDC) between electric circuits and mounting panel Dielectric strength 2,000 VAC, 50/60 Hz for 1 min between electric circuits and mounting panel Overcurrent 20 times of max. set value of operating current for 2 s Vibration resistance Destruction: 16.7 Hz, 1-mm double amplitude for 10 min each in X, Y, and Z directions 2 Shock resistance Destruction: 98 m/s (approx. 10G) Ambient temperature Operating: –10°C to 55°C (with no icing) Ambient humidity Operating: 45% to 85% Weight K2CU-F: approx. 390 g; K2CU-P: approx. 300 g Note: The logical value is an operating value within a range of 0.85 to 1.1 with a voltage fluctuation of 85% to 110%, based on the value at the control supply voltage measured as 1. 2 K2CU Operation K2CU-F@@A-@GS Series When power is supplied to the heater (when the SSR is ON), a cur- The signal generated by the reference voltage generator is sent to rent flows through the wires to the heater elements. At the same the setting circuit to provide a reference value. The reference value is time, a voltage is imposed on the gate circuit and the K2CU- sent to the comparators. Each comparator compares its heater ele- F@@A@GS begins monitoring the current flowing through the heater ment current input and the reference value. If the input is lower than wires. the reference value, a signal is sent to the output circuit. The current flowing to the heater wires is detected by the detector There are two detector sections operating independently. If either of sections through each Current Transformer (CT) incorporated by the the input signals from the CTs is lower than the reference value, the K2CU-F@@A-@GS. output relay and alarm indicator will be activated. The current signals transmitted by the two CTs are sent to the cur- The K2CU-F@@A-@GS incorporates a voltage fluctuation compen- rent-voltage converters, smoothing circuits, and comparators as sation function which automatically corrects the reference value if the shown in the diagram. supply voltage fluctuates. Power supply + SSR DC Temperature − controller G+ G− S1 S2 CT1 b1 To each circuit X/c a1 CT2 Buzzer CM1 X BZ Output relay Alarm indicator Note: 1. The dotted lines indicate the line conductors passing through the windows of the current transformers. 2. The current flowing into the gate circuit (between G+ and G−) is as follows: Approximately 1.4 mA at 5 VDC Heater elements Approximately 3.4 mA at 12 VDC Approximately 6.7 mA at 24 VDC 3. When using a K2CU which has the model number suffix "GS" (a model that incorporates gate input terminals), the control output of the temperature controller must be a voltage output type. 3 Current voltage Current voltage converter converter Smoothing Smoothing circuit circuit Gate circuit Comparator Comparator Setting circuit Reference voltage Output circuit generator Power circuit K2CU K2CU-F Series When power is supplied to the heater (when the contactor is ON), a The signal generated by the reference voltage generator is sent to current flows through the wires to the heater elements. At the same the setting circuit to provide a reference value. The reference value is time, a voltage is imposed on the power circuit of the K2CU-F. sent to the comparators. Each comparator compares its heater ele- ment current input and the reference value. If the input is lower than The current flowing to the heater wires is detected by the detector the reference value, a signal is sent to the output circuit. sections through each Current Transformer (CT) incorporated by the K2CU-F. There are two detector sections operating independently. If either of the input signals from the CTs is lower than the reference value, the The current signals transmitted by the two CTs are sent to the cur- output relay and alarm indicator will be activated. rent-voltage converters, smoothing circuits, and comparators as shown in the diagram. The K2CU-F incorporates a voltage fluctuation compensation func- tion which automatically corrects the reference value if the supply voltage fluctuates. Power supply Contactor S1 S2 CT1 b1 To each circuit X/c a1 CT2 CM1 X BZ Output relay Buzzer Alarm indicator Note: The dotted lines indicate the line conductors passing through the windows of the current transformers. Heater elements K2CU-P Series The K2CU-P operates basically in the same way as the K2CU-F. The comparator compares external current signals and the reference value and outputs the result of the comparison to the output circuit. Power supply Contactor 100/110 V 200/220 V 0 V 67 8 1 5 CT X/c To each circuit 4 3 2 X BZ Output relay Buzzer Alarm indicator Note: The heater and the operating power supply connected via terminals 6 and 8 or terminals 7 and 8 must be turned ON at the same time. Heater elements 4 Current voltage Current voltage converter converter Current voltage Smoothing Smoothing circuit converter circuit Smoothing Comparator Comparator circuit Setting circuit Setting circuit Reference voltage Reference voltage Comparator Output circuit generator generator Output circuit Power circuit Power circuit K2CU The knobs of the K2CU-F and K2CU-P as shown in the illustrations ■ Setting of Operating Current are set to 32 A and 0.7 A respectively. Use the potentiometer on the front panel to set the operating current. The set operating current is defined as the mean value of the heater current under normal operating conditions and the heater current Rotate the knob to set the desired current value at which the Heater under a burnout or abnormal condition. Burnout Detector should operate. Do not exceed the maximum and minimum positions. Normal current + abnormal current Set value = The K2CU-F’s scale is divided into 12 graduations including sub- 2 graduations and the K2CU-P’s scale is divided into 5 graduations. ALARM HEATER FAULT DETECTOR ALARM 7 6 8 K2CU-P1A-A 5 9 HEATER FAULT DETECTOR 14 4 10 16 S1 12 18 × 4 A 10 20 × 0.5 K2CU-F40A-C A S2 OMRON Corporation MADE IN JAPAN SOURCE 100/200 100/200VVAC AC 50/60Hz CURRINT 5A/AC/Max. Knob Red point (indicates the set value) ■ Heater Connection and Current The following table shows the different connections possible. The formula under each illustration indicates the electrical current value of the heater elements under normal and abnormal conditions. Phase Normal condition Abnormal condition 0 A Single phase 5 A 200 V 200 V 1 kW 5 A 0 A Three phase Delta network 7.5 A 5 A 8.7 A 1 kW 7.5 A 200 V 8.7 A 8.7 A 200 V 1 kW 200 V 5 A 1 kW 8.7 A 1 √ 3 √ (5 A × √3 × ) (5 A × 3) (5 A × √ × ) 3 √ 3 2 Star network 2.5 A 2.5 A 2.9 A 1 kW 2.5 A 200 V 2.5 A 2.9 A 200 V 1 kW 200 V 1 kW 2.9 A 1 1 √3 √ (5 A × ) 1 3 (5 A × × ) √ 3 (5 A × × ) √ 2 2 3 √3 V network 2.5 A 5 A 5 A 1 kW 200 V 5 A 8.7 A 200 V 200 V 2.5 A 1 kW 5 A 1 √ (5 A × 3 = 8.7 A) (5 A × ) (5 A × 1) 2 Note: Values in this table are correct when a 200 VAC, 1 kW heater is used on a single-phase or three-phase current. 5 K2CU ■ Operation Check K2CU-F@@A-@GS The operation of the heater burnout detector can be easily checked as follows: In a Single-phase Circuit Set the operating current to be 0.6 to 0.55 times the heater current. Close the SW with switch SW turned on. Confirm that the alarm 2 1 indicator remains off. Turn off SW and confirm that the alarm indicator comes on, and that 1 the output relay operates. SW2 SSR S1 S2 K2CU-F SW1 Heater In a Three-phase, Delta Network In a Three-phase, Star Network Set the operating current to be 0.6 times the heater current. Set the operating current to be 0.9 times the heater current. Close the SW3 with switches SW1 and SW2 turned on. Confirm that Close the SW2 with switch SW1 turned on. Confirm that the alarm the alarm indicator remains off. indicator remains off. Turn off SW2 and confirm that the alarm indicator comes on, and that Turn off SW1 and confirm that the alarm indicator comes on, and that the output relay operates. the output relay operates. Turn on SW1 set the operating current to be 0.9 times the heater cur- rent, and confirm that the alarm indicator goes off and the output relay releases. Turn off SW1 and confirm that the alarm indicator comes on, and that the output relay operates. SW3 SW2 SSR SSR S1 S1 S2 S2 K2CU-F K2CU-F SW1 SW1 SW2 Heater Heater 6 K2CU In a Three-phase, V Network 1 In a Three-phase, V Network 2 Set the operating current to be 0.3 to 0.35 times the heater current. Set the operating current to be 0.6 times the heater current (of the phase connected between terminals 1 and 2, or the one passed Close the SW with switch SW turned on. Confirm that the alarm 2 1 through the window of the window-type Current Transformer of the indicator remains off. heater burnout detector). Turn off SW and confirm that the alarm indicator comes on, and that 1 Close the SW with switch SW turned on. Confirm that the alarm 2 1 the output relay operates. indicator remains off. Turn off SW and confirm that the alarm indicator comes on, and that 1 the output relay operates. SW2 SW2 SSR SSR S1 S1 S2 S2 K2CU-F K2CU-F SW1 SW1 Heater Heater K2CU-F, K2CU-P The operation of the heater burnout detector can be easily checked as follows: In a Single-phase Circuit Set the operating current to be 0.55 to 0.6 times the heater current. Contactor Contactor Close the contactor with switch SW1 turned on. Confirm that the alarm indicator remains off. Turn off SW1 and confirm that the alarm indicator comes on, and that the output relay operates. 6 8 S1 1 S2 2 K2CU-F K2CU-P SW1 SW1 Heater Heater 7 K2CU In a Three-phase, Delta Network In a Three-phase, V Network 1 Set the operating current to be 0.6 times the heater current. Set the operating current to be 0.3 to 0.35 times the heater current. Close the contactor with switches SW and SW turned on. Confirm Close the contactor with switch SW turned on. Confirm that the 1 2 1 that the alarm indicator remains off. alarm indicator remains off. Turn off SW and confirm that the alarm indicator comes on, and that Turn off SW and confirm that the alarm indicator comes on, and that 2 1 the output relay operates. the output relay operates. Turn on SW set the operating current to be 0.9 times the heater cur- 1 rent, and confirm that the alarm indicator goes off and the output relay releases. Contactor Turn off SW and confirm that the alarm indicator comes on, and that 1 the output relay operates. Contactor S1 S2 K2CU-F SW1 S1 S2 K2CU-F Heater SW1 In a Three-phase, V Network 2 Set the operating current to be 0.6 times the heater current (of the phase connected between terminals 1 and 2, or the one passed SW2 Heater through the window of the window-type Current Transformer of the heater burnout detector). In a Three-phase, Star Network Close the contactor with switch SW1 turned on. Confirm that the alarm indicator remains off. Set the operating current to be 0.9 times the heater current. Turn off SW1 and confirm that the alarm indicator comes on, and that Close the contactor with switch SW1 turned on. Confirm that the the output relay operates. alarm indicator remains off. Turn off SW1 and confirm that the alarm indicator comes on, and that K2CU-P K2CU-F the output relay operates. Contactor Contactor Contactor 6 8 1 S1 2 S2 S1 S2 K2CU-P SW1 SW1 K2CU-F SW1 K2CU-F Heater Heater Heater 8 K2CU ■ Test Circuit To check the operation in detail, use the following circuit. K2CU-F K2CU-P The dotted lines indicate the line con- ductor passing through the round Switch window of the current transformer. Switch S2 S1 R 7 6 8 5 R Slidac 1 4 2 3 Slidac a1 CM1 b1 K2CU-P Note: Determine the value of R according to the specifications K2CU-F of the K2CU to be used. The dotted line indicates the connection at a supply voltage of 100 or 110 VAC. Dimensions Note: All units are in millimeters unless otherwise indicated. Mounting Holes K2CU-F Eight, M3.5 6 20 terminal Two, 6-dia. or M5 Two, 20-dia. screws mounting holes holes 102 Potentiometer knob 111 102 (90) Alarm 33 indicator Note: 1. Install the K2CU-F on a flat surface. 2. When solderless terminal lugs are desired, use ones having an outer diameter of 6.5 mm 60 95 maximum. 108 6-dia. mounting hole 6.5 mm max. 6.5 mm max. K2CU-P 3.5 Connecting Socket 5 91 72 K2CU-P 108 8PFA1 (order separately) 60 7 8.5 89 9 K2CU Installation ■ External Connections K2CU-F@@A-@GS Single-phase Heater Three-phase Heater Power Power supply supply Temperature Temperature controller controller Control Control voltage voltage SSR SSR b1 b1 S1 CM1 S1 CM1 a1 S2 a1 S2 Y/a Y/a K2CU-F K2CU-F BZ LY BZ LY Temperature Temperature sensor sensor Heater Heater K2CU-F Single-phase Heater Three-phase Heater Power Power supply supply Tempera- Tempera- ture Control Control ture controller contact contact controller Contactor Contactor b1 b1 S1 CM1 S1 CM1 a1 S2 a1 Y/a S2 Y/a K2CU-F K2CU-F BZ LY BZ LY Temperature Temperature sensor sensor Heater Heater Note: 1. The dotted lines which pass through the heater burnout detector indicate the line conductor passing through the round “window” of the window-type Current Transformer. 2. Y: External relay for self-holding circuit BZ: Alarm buzzer L: Alarm indicator 3. To use a 100 (110) VAC control power supply with K2CU-P, connect it to terminal 7 instead of 6. 10 K2CU Three-phase, V-connected Heater With External Current Transformer Power supply b1 S1 CM1 K2CU-F10A-@ a1 S2 CT K2CU-F @A/5A b1 S1 CM1 Heater a1 S2 Note: The dotted lines which pass through the heater burnout detec- tor indicate the line conductor passing through the round “win- dow” of the window-type Current Transformer. CT @A/5A Note: Pass two out of the three line conductors through the current transformers of the heater burnout detector twice as shown. Heater K2CU-P Small-capacity, Plug-in Models Small-capacity Heater With External Current Transformer Power Power supply supply Tempera- Control Temperature Control ture contact controller contact controller Contactor 7 6 7 6 8 5 8 5 CT 1 4 @A/5A 1 4 2 3 Y/a 2 3 Y/a K2CU-P K2CU-P BZ LY Temperature BZ LY Temperature sensor sensor Heater Heater Note: 1. The dotted lines which pass through the heater burnout detector indicate the line conductor passing through the round “window” of the window-type Current Transformer. 2. Y: External relay for self-holding circuit BZ: Alarm buzzer L: Alarm indicator 3. To use a 100 (110) VAC control power supply with K2CU-P, connect it to terminal 7 instead of 6. 11 K2CU Safety Precautions K2CU-F@@A-@GS Use the K2CU-F@@A-@GS (with gate input terminals) in combina- tion with a temperature controller that has PID with feed-forward cir- cuitry to control the heater temperature, in which case, the heater element(s) must be turned ON or OFF for 0.1 s or longer. K2CU-F When a single-phase heater is used, pass the two lines through the openings of the heater burnout detector. When a three-phase heater is used, pass two (phases) of the three lines through the openings. In either case, if only one line passes through, an alarm signal will always be produced. With single-phase power supply With three-phase power supply Heater Heater Pass the lines through the openings only once. If they are passed more than once, the actual operating current will be less than the set current. The lines can be passed in either direction. To use the heater burnout detector at a current less than the current range that can be set, the lines must be passed more than once. Determine the number of times the lines should be passed by the fol- lowing equation: (Operating current) x n = Current setting range where, n: number of times the lines loop through the window All K2CU-F models incorporate a voltage fluctuation compensation function. K2CU-P The K2CU-P can be used only in single-phase circuits. Do not pull out the K2CU-P from the socket when the K2CU-P is energized. Especially when using it in combination with a Current Transformer commercially available, this practice causes the second- ary circuit of the transformer to open, which is very dangerous. General Refer to External Connections before using the K2CU with external CTs. When a temperature controller is used in combination with the K2CU (except for the K2CU-F@@A-@GS), the heater element(s) must be turned ON or OFF for 1 s or longer (although the heater element(s) can be turned ON for 0.5 s according to the specifications). The K2CU cannot be used with a phase-control circuit, inverter cir- cuit, frequency-count circuit, cycle-control unit, or a motor load. Mounting Securely mount the K2CU as horizontally as possible although there is no particular limitation of mounting directions. Connection Solderless-type terminal must be connected to the terminals securely. Wire the terminals correctly by referring to the external connections. The terminals have no polarity. Be sure to connect 100 (or 110) V to the 100-V (or 110-V) terminals and 200 (or 220) V to the 200-V (or 220-V) terminals of the K2CU-P or the K2CU-P may malfunction. The control power source for the K2CU (except for the K2CU-F@@A- @GS) must be supplied from the load side via a contactor. Be sure to impose a voltage between the 0-V terminal and 100-V (or 110-V) terminal or the 0-V terminal and 200-V (or 220-V) terminal of the K2CU-P, otherwise the K2CU-P will not operate. 12 K2CU Q&A What settings are required to connect more than one heater in parallel? Q The following table shows relative changes in the current when any one of several elements connected in parallel has burned out. Use this table as a guideline in determining the current setting. The degree of change in the current when an element burns out may be too small to detect if more than five elements are connected in parallel. As a rule, do not connect more than 5 elements in parallel. Connection n = 1 n = 2 n = 3 n = 4 n = 5 Single- I is 0 when one 0.5 0.67 0.75 0.8 phase element burns I No. of heater = n out Star Current in burned-out phase I is 0 when one 0.6 0.75 0.82 0.86 element burns I No. of heater per phase = n out Current in other phases 0.87 0.92 0.95 0.96 0.97 Delta Current in burned-out phase 0.58 0.77 0.84 0.88 0.91 I Current in other phases 1 1 1 1 1 No. of heater per phase = n Note: 1. This table shows the respective change rates in current when any one of several elements connected in parallel has burned out. 2. The values in the table are current ratios after one element burns out in comparison to a normal current of “1” (i.e., the current before the element burns out). 3. The values in this table are logical values. These values may vary slightly because of influence of unbalanced loads (heaters). It is there- fore recommended to test the actual current values and the load condition before determining the operating current, especially when the current under the normal condition and that under an abnormal condition do not significantly differ. Can the K2CU be used for heaters with a voltage of 400/ Can the control power supply for the K2CU be connected Q 440? Q from a separate circuit from the one used for the heater circuit? With a model with a large-capacity, built-in current Yes. It can be used if a power transformer is used to drop the transformer, changes in the control power supply voltage are voltage applied to the control power supply voltage terminals used in compensating the reference value for the internal of the K2CU to 100 to 220 V. setting circuit. A large error may occur in the operating value if power is supplied from a separate circuit. Can the K2CU be used for three-phase circuits with Q unbalanced currents? Unbalanced currents can exist because of different heater capacities or because different numbers of elements are connected to each phase, causing the current for each phase to be different even during normal operation. There is only one setting provided for the two holes on the K2CU, so the setting must be made below the current value for the phase with the lowest current. This could prevent the current from dropping below the set value depending on the element that burns out. It is thus not possible to detect heater burnouts for all elements connected with unbalanced currents. Either balanced circuits must be used, or a separate K2CU must be installed for each phase. 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. 13 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. 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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. 2015.10 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 2015 All Right Reserved.