Applicable Systems
Fujitec Control System
Symptoms
Fujitec GLVF-II elevator controller reports fault indicating control system or safety circuit issue requiring diagnostic evaluation of the elevator control and safety systems.
Possible Causes
- Governor switch activation detected by the safety monitoring circuit
- Door lock circuit interruption during travel mode operation
- Counterweight safety switch signal lost during normal operation
- Motor brake monitoring relay detected brake release failure
Troubleshooting Steps
- Step 1: Access GLVF-II controller diagnostic menu via maintenance panel
Fault code, occurrence time, and status displayed on LCD - Step 2: Check governor switch continuity at the governor assembly
Governor switch shows closed circuit in normal operating condition - Step 3: Verify door lock circuit integrity using multi-meter
Door lock circuit shows 0 ohm resistance when doors are closed and locked - Step 4: Test brake monitoring relay operation with manual brake test
Relay activates within 0.5 seconds of brake command
How to Reset
Reset by: 1) Correct the fault condition. 2) Reset controller from maintenance mode. 3) Perform test run. 4) Verify normal operation before returning to service.
Common Replacement Parts
- GLVF-CTL-001: Fujitec GLVF-II controller board assembly (Verify model compatibility before replacement)
Frequently Asked Questions
- Q: What is the purpose of the governor switch?
The governor switch monitors elevator overspeed and activates the safety gear if the car exceeds rated speed by 20%. The switch also provides a signal to the controller to remove drive power as an additional safety measure.
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Source: Fujitec GLVF-II Elevator Controller Manual
Category: Elevator
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