Troubleshooting
6-80 Manual # 42-02-7223 C1
Description: The system communication has been disabled via the user command found in (System Configu-
ration > Building > System comm command)
Car Reaction: The controller will no longer communicate with the rest of the system (iCue, Local Dispatcher,
Hall Calls drivers, …) until the System Communication is manually re-enabled via the same command (this is
similar to pulling the orange System Comm cable from the iBox).
Car Reaction:
System Comm Enabled
Description: The system communication has been re-enabled via the user command found in (System Con-
figuration > Building > System comm command
Car Reaction: The controller will now communicate with the rest of the system (iCue, Local Dispatcher, Hall
Calls drivers, etc.)
SYSTEM SYNC
Description: The iBox is establishing communication with the cartop and acquiring position data.
Tach Error Fault, TACH ERROR FAULT
Description: Indicates that the difference between the intended speed and the speed feedback signal has
exceeded the Following Error parameter.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped. Followed by nor-
mal run.
Tro ubleshooting:
1. Please refer to “Tach Error Tripping Threshold Adjustment” on page 4-49.
Tach Failure, TACH FAILURE
Description: Difference between synthetic tach signal and external speed feedback signal exceeds tolerance.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped. Cancel all calls.
Tro ubleshooting:
1. Check velocity encoder and recalibrate tach failure and synthetic speed. Please refer to “Tach Failure Cal-
ibration (System 12 SCR Drive)” on page 2-45 and See “Synthetic Speed Calibration (System 12 SCR
Drive)” on page 4-14.
TERMINAL LEARN ON
Description: This status message, on the iBox display, indicates that the system is prepared to learn the
speed and position values for the normal (UNT1-5/DNT1-5) and emergency (UETS/DETS) terminal switches.
Terminal Synchronization Fault, TERMINAL SYNC FAULT
Description: The system either did not receive edge position data from the cartop or the system did not
detect a floor position magnet where expected.
Car Reaction: Car stops after crossing floor magnet at top or bottom terminal and is not allowed to move.
Tro ubleshooting:
1. Verify car was not moved after power shut off.
2. Verify up/down normal terminal switch #5 opens at appropriate location. When up/down switch opens,
no LU or LD sensor should be active. Also, only one floor magnet should be encountered in direction of
travel after up/down switch opens.
3. Move car past floors around vicinity of fault and verify proper activation of LU and LD sensors.
4. Verify that the system is communicating with the cartop (no Cartop Communication Fault).
5. Verify absolute and cartop positions change by same amount and same direction while moving the car.
6. Verify that the terminal magnet has not fallen off.
7. Check the clearance between the floor sensor board and the magnets. Sometimes this clearance will be
off just enough to make some magnets fail to register properly. Adjust the clearance if necessary.
8. Re-learn the floor heights.
9. The iLink, iLand or iBox may be faulty.
Test Developer Data Trap
Description: A mechanism to manually trigger the custom data trap.
Table 6.3 iControl Messages
iControl Messages
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