Applicable Systems
Mitsubishi Elevator
Symptoms
Mitsubishi GPS-CR elevator controller reports fault during normal operation indicating control system issue requiring diagnostic evaluation of the elevator control system.
Possible Causes
- Car speed deviation from reference exceeds 0.3 m/s during deceleration
- Load weighing sensor signal out of range indicating sensor failure
- Door motor current feedback loss preventing door operation
- Floor learning data corruption after power interruption
Troubleshooting Steps
- Step 1: Access GPS-CR controller diagnostic via maintenance panel
Fault code with occurrence count and last occurrence time displayed - Step 2: Verify speed reference vs actual speed on controller display
Speed deviation within 0.05 m/s of reference during normal operation - Step 3: Check load weighing sensor calibration
Sensor reading matches known test weight within 2% accuracy - Step 4: Perform floor learning procedure if position data is corrupted
Floor learning completes successfully with no errors
How to Reset
Reset by: 1) Correct the fault condition. 2) Enter maintenance mode and clear fault. 3) Run inspection speed test. 4) Verify normal operation with test trips.
Common Replacement Parts
- GPS-CTL-001: Mitsubishi GPS-CR controller main board (Check firmware version before replacement)
Frequently Asked Questions
- Q: What happens if floor learning is not completed after battery replacement?
If floor learning is incomplete, the controller cannot determine car position and will restrict operation to inspection mode. The elevator must complete a full travel floor learning cycle before normal service can resume.
Source: Mitsubishi GPS-CR Elevator Controller Technical Manual
Category: Elevator