Reverse Protection Relay APR-S CSM_APR-S_DS_E_3_2 Uses Voltage Detection to Determine Reverse Revolution of Three-phase Motor • Detects motor reversal due to incorrect wiring. Direction of motor revolution is detected as soon as power is ap- plied to the Relay. If the power is reversed, the magnetic contac- tor locks in the open state. The magnetic contactor can also be wired to protect it from be- ing closed in open phase. Small, plug-in Relay th at needs no adjustment. Uses voltage detection method to operate independently of load APR-S380 (380/400 V) APR-S (200/220 V) current. APR-S440 (440 V) Model Number Structure ■ Model Number Legend APR-S@ 1 2 1. Reverse Protection Relay 2. Control Power Supply Voltage None: 200/220 VAC 380: 380/400 VAC 440: 440 VAC Ordering Information ■ List of Models Supply voltage Model 200/220V APR-S 380/400V APR-S380 440V APR-S440 ■ Connecting Sockets (Order Separately) Applicable model Socket Mounting bracket Type Model Model APR-S Front-mounting socket PF083A PFC-A6 Back-mounting socket PL08 PLC-7 APR-S380 Front-mounting socket P2CF-11 --- APR-S440 Back-mounting socket PL11 Y92H-1 1 APR-S Specifications ■ Ratings/Characteristics Type APR-S APR-S380 APR-S440 Supply voltage 3-phase, 200/220 VAC, 50/60 Hz 3-phase, 380/400 VAC, 50/60 Hz 3-phase, 440 VAC, 50/60 Hz Operating voltage range 170 to 240 VAC 350 to 420 VAC 410 to 460 VAC Operate time 100 ms max. (from power application to detection of motor direction) Control output 1.1 A at 200 VAC, cosφ = 1, SPDT 1.1 A at 250 VAC, cosφ = 1, SPDT 2 A at 115 VAC, cosφ = 1 0.6 A at 250 VAC, cosφ = 0.4 0.6 A at 200 VAC, cosφ = 0.4 1.2 A at 115 VAC, cosφ = 0.4 Insulation resistance 100 MΩ min. (at 500 VDC) Dielectric strength 2,000 VAC, 50/60 Hz for 1 min 2 Shock Malfunction: 98 m/s (approx. 10 G) Ambient temperature −10 to 50 °C Life expectancy Mechanical: 1,000,000 operations min. Electrical: 100,000 operations min. Weight Approx. 100 g Connections To Detect Reverse Phase or Open To Switch to Reverse Phase Power supply Phase 380/400 VAC RS T Power supply 200/220 VAC R ST 4 5 3 6 APR-S380 2 Conductor control 7 power supply 1 8 APR-S Reverse Note: Use separate power supplies Contactor Protection Relay for the contact’s applied volt- age and control voltage. M Contactor Operation M Suppose the motor revolves in the forward direction when the input terminals J, A, and C of the APR-S are connected, in this Operation sequence, to the power lines R, S, and T, respectively. The APR-S • Suppose the motor revolves in the forward direction when the input Relay turns ON when the phase sequence of the current is in the terminals F, D, and C of the APR-S are connected, in this forward direction, that is, when the power lines R, S, and T are sequence, to the power lines. The APR-S Relay turns ON when the energized in this sequence. When the Relay turns ON, terminals F phase sequence of the voltage is in the forward direction, that is, and G conduct, energizing the contactor. If one of the three phases when the power lines R, S, and T are energized in this sequence. is reversed, the Relay does not turn ON, and terminals F and G When the Relay turns ON, terminals E and A conduct, energizing do not conduct, but a current flows between terminals F and H, the contactor. If one of the three phases is reversed, the Relay energizing the reverse-phase contactor. does not turn ON and the contactor is not energized. Note: Open-phase detection is not possible. To protect the motor from damage due to open phase, the wiring must be performed in exactly the same way as shown in this figure (i.e., so that the phase connecting the contactor coil is not the same as the phase connecting terminal D of the Relay). If phase R or T is open, the contactor does not operate because one side of its coil is not energized. If phase S (connected to termi- nal D of the Relay) opens, the Relay does not turn ON, allowing no current flow between terminals E and A. The contactor therefore does not operate. Note, however, that the contactor is prevented from operating by preventing an open-phase voltage from flowing into the motor and not by the open-phase protection feature of the Relay. Note: Open-phase detection is only possible when a 200/220-VAC APR-S is used with the wiring exactly the same as shown in the above diagram. 2 APR-S Accessories (Order Separately) ■ Dimensions APR-S APR-S 50 84.9 APR-S 68.9 63.9 38 13.6 77.5 16 PF083A (Order separately) PL08 (Order separately) APR-S380/S440 78 1 0.7 6 63.7 13.6 APR-S380 103 Y92H-1 APR-S380 77 48 44.8 × 44.8 Hook 48 16 PL11 P2CF-11 (Order separately) (Order separately) ■ Terminal Arrangement APR-S380/S440 APR-S 6 5 7 4 5 8 4 3 6 3 9 2 7 2 10 1 11 1 8 (Bottom View) (Bottom View) 3 APR-S ■ Accessories for Track Mounting PFP-100N/PFP-50N Socket Mounting Track 7.3±0.15 4.5 35±0.3 27±0.15 15 25 10 25 25 10 25 15 (5)* 1 1,000 (500)* * The dimensions given in parentheses are for the PFP-50N Socket Mounting Track. PFP-100N2 Socket Mounting Track 16 4.5 35±0.3 27 24 29.2 15 15 25 10 25 25 10 25 1 1.5 1000 PFP-M End Plate 10 6.2 1.8 M4×8 pan head 1 screw 35.5 50 35.5 1.8 11.5 10 1.3 M4 spring washer 4.8 Spacer 16 5 12 34.8 44.3 16.5 4 APR-S Safety Precautions ■ Correct Use With the APR-S, APR-S380, or APR-S440 an open phase at startup can be Mounting prevented only if connections are external and wiring has been performed to detect reverse phase and open phase at startup when the power supply is If a back-mounting socket is used for mounting, mount the socket turned ON. When doing so, use an SE Static Motor Relay. An open phase flush from the back of the panel (thickness: 1 to 4 mm) using when the power supply is turned ON can be detected only when it occurs screws, and insert the APR-S after the socket is sufficiently between the APR-S, APR-S380, or APR-S440 and the power supply. An open tightened. Make sure the socket is mounted with the key slot phase cannot be detected on the load side. downward. Suppose the motor revolves in the forward direction when the input terminals 6, If a front-mounting socket is used, mount the socket to the panel 4, and 3 of the APR-S are connected, in this sequence, to the power lines. If the using screws, and insert the APR-S after the socket is sufficiently phase sequence of the power supply applied to the APR-S is a positive tightened. sequence (i.e., applying to R to S to T in the order of 6 to 4 to 3), the relay built into the APR-S will turn ON, there will be continuity between terminals 5 and 1, Use a mounting bracket to secure the APR-S reliably and prevent and the contactor will be energized. For reverse phase, the built-in relay will not contact faults. turn ON and the contactor will not be energized. The positive phase sequence for the APR-S380 or APR-S440 Switching to Reverse Phase corresponds to the following order of the input terminals: 10 to 1 to 3. If the phase sequence of the power supply applied to the APR-S380 or APR- Power supply S440 is a positive sequence (i.e., applying to R to S to T in the order of 10 to 1 200/220 VAC to 3), the relay built into the APR-S380 or APR-S440 will turn ON, there will be R ST continuity between terminals 6 and 7, and the contactor will be energized. For reverse phase, the built-in relay will not turn ON and the contactor will not be energized. Control An open phase when the power is turned ON cannot be detected power by the APR-S380 or APR-S440. supply 4 5 An open phase when the power is turned ON can be prevented when 3 6 wiring is performed exactly as in the following figure (when wiring is APR-S 2 performed so that the phase of the connected contactor coil for turning 7 Reverse ON the power supply and the phase of the connected terminal 4 of the 1 8 Protection APR-S, APR-S380, or APR-S440 are not the same phase). Relay Operation Chart Example: APR-S380 Positive-phase Voltage Reverse-phase Voltage M1 M2 AC380V AC380V Input voltage Input voltage Positive-phase Positive phase Positive phase power-ON Reverse-phase Reverse phase Reverse phase contactor power-ON contactor Continuity Between terminals No Between terminals continuity No continuity 6 and 7 6 and 7 Continuity Continuity Between terminals Between terminals No continuity M 6 and 8 6 and 8 Power supply Suppose the motor revolves in the forward direction when the input 200/220 VAC terminals 6, 4, and 3 of the APR-S are connected, in this sequence RST to the power lines, R, S, and T, respectively. If the phase sequence of the power supply applied is the positive sequence, the relay built into the APR-S will turn ON, there will be continuity between terminals 5 and 1, and the positive-phase power-ON contactor will 45 be energized. 3 6 For reverse phase, the built-in relay will not turn ON, there will be 2 7 conductivity between terminals 5 to 8, and the reverse-phase power-ON contactor will be energized. In this way, the voltage 1 8 supplied to the motor will remain positive phase whether the APR-S Reverse voltage applied is positive phase or reverse phase. Protection Relay Note Contactor The APR-S requires 100 ms after the voltage has been applied until positive phase and reverse phase are detected. Be sure to M allow at least 100 ms to elapse before applying voltage to the control power supply after applying voltage to the APR-S. In the figure above, one side of the contactor coil will not be energized if either phase R or phase T is open phase, so the power supply will not turn ON. For open R phase (APR-S terminal 4), the built-in relay of the APR-S will not turn ON, and there will be no conductivity between terminals 5 and 1, so the contactor will not operate, and the power supply will not turn ON. This protection is for an open phase when the power is turned ON and cannot ensure detection of an open phase when the motor is operating. Incorrect wiring on the magnet contactor load side cannot be detected. A phase detection method is used, so usage is not possible with single 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. 5 Terms and Conditions Agreement Read and understand this catalog. 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