Lovato 31 Rgam 12 User Manual -

| Symptom | Possible Cause | Solution | |---------|----------------|----------| | Motor trips immediately on start | Current setting too low; short circuit; locked rotor | Increase dial to match FLA; check motor windings | | Motor runs, then trips after several minutes | Overload; high ambient temp; incorrect setting | Measure actual motor current with clamp meter; reduce load; clean cooling vents | | Relay will not reset | Thermal element still hot; manual/auto setting wrong; mechanical stuck | Wait 5 minutes; check reset lever; press stop button then reset | | Contactor won’t stay closed | NC contact (95-96) open even without trip | Test continuity; replace relay if internal contact failed | | No trip even when motor draws >12 A | Dial set too high; relay defective; phase loss not detected | Verify setting; test with current injection tool | | Auxiliary contact not working | Loose wiring; contact burned | Check screws; measure voltage at 97-98 during trip | The Lovato 31 RGAM 12 meets global standards, making it suitable for export machinery and UL-listed panels.

| Terminal Label | Description | |----------------|-------------| | 1/L1, 3/L2, 5/L3 | Line side (from contactor or supply) | | 2/T1, 4/T2, 6/T3 | Load side (to motor) | | 95-96 | NC contact (normally closed – trips open) | | 97-98 | NO contact (normally open – trips closed) | lovato 31 rgam 12 user manual

Product Code: 31 RGAM 12 Manufacturer: Lovato Electric Introduction: Why the Lovato 31 RGAM 12 Matters In the world of industrial automation and motor control, having a reliable and easy-to-monitor overload relay is non-negotiable. The Lovato 31 RGAM 12 is a thermal overload relay designed to protect AC motors from damage caused by overheating, excessive current draw, phase loss, or prolonged starting times. | Symptom | Possible Cause | Solution |

L1 --> Stop Button --> Start Button --> Contactor Coil A1 Contactor Coil A2 --> 95 (Overload NC) --> 96 --> Neutral Even with a well-designed product like the Lovato 31 RGAM 12, issues can arise. Here’s a quick troubleshooting table based on user manual guidelines and field experience. L1 --> Stop Button --> Start Button -->