KRC0207

Common Causes

• Physical safety gate door or panel is open or not fully closed and latched into interlock switch position
• Safety gate interlock switch is misaligned, damaged, or requires adjustment to properly engage with door striker plate
• Wiring fault or disconnection between safety gate switch and safety relay module or X11 input on controller
• Safety relay module has detected discrepancy between redundant safety gate switch contacts and has opened safety output
• Incorrect safety configuration in Safety.SPF file or WorkVisual project where gate input is improperly mapped or requires reset

Troubleshooting Steps

1. 1Step 1: Physically inspect all perimeter safety gates and access doors to verify they are fully closed and latched mechanisms are engaged
2. 2Step 2: Check safety gate interlock switch alignment by observing switch actuator engagement when door closes and adjust mounting if gap is incorrect
3. 3Step 3: View safety input status on smartPAD under Configure > Safety Configuration (if authorized) or Display > Inputs/Outputs > Safety Inputs to identify which gate input is open
4. 4Step 4: Measure continuity of safety gate switch contacts with door closed using multimeter and verify redundant contacts both close properly (typically dual channel)
5. 5Step 5: Verify 24VDC supply voltage is present at safety gate switch inputs and check wiring continuity from switch back to safety relay module in cabinet
6. 6Step 6: Review safety relay module LED status indicators for fault codes, perform safety relay reset procedure per manufacturer instructions, or verify safety configuration in WorkVisual matches physical installation