Reverse Protection Relay APR-S CSM APR-S DS E 3 3 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 con- tactor 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 that 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 1APR-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. (Until detecting positive phase or reverse phase after applying voltage) Control output 1.1 A at 200 VAC, cos = 1, SPDT 1.1 A at 250 VAC, cos = 1, SPDT 2 A at 115 VAC, cos = 1 0.6 A at 250 VAC, cos = 0.4 0.6 A at 200 VAC, cos = 0.4 1.2 A at 115 VAC, cos = 0.4 Insulation resistance 100 M 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 contacts 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