MCi iControl User Manual page 328

Troubleshooting
Table 6.3 iControl Messages
Landing System Sensor Fault, LAND SYS SENSOR FAULT
Description: This fault is generated when a ULM or DLM sensor is activated while the car is running and is
away from a floor. It can also be generated if the M contactor is ON (car is commanded to run) and the safety
system sees a door zone magnet for more than 16 inches of single direction travel.
Car Reaction: Emergency Stop. Motor and brake contactors immediately dropped.
Troubleshooting:
1. Press Fault Reset to clear.
2. If allowed, set Contactor Drop Delay Time to 0.9 seconds.
3. Check for stuck door zone sensor input (front or rear).
LCD Fault
Description: This fault is generated if the controller gets a "not ready" state from the LCD. This can happen if
the iBox LCD is not connected properly or, with some LCD models, if the contrast is set to far to an extreme.
Car Reaction: None. The fault is simply an indication to adjust or replace the iBox LCD.
Troubleshooting:
1. Check the iBox Onboard Display LCD. If the LCD is blank or frozen, adjust the contrast dial to midpoint.
2. If the display looks corrupted, press the iBox Computer Reset button.
Learn Switch Timed Out Fault, LEARN SW TIMED OUT
Description: When the Learn Switch is ON for more than 15 minutes, the car will shut down.
Car Reaction: The car is not allowed to restart after the current run is completed.
Troubleshooting:
1. Turn OFF the iBox Learn switch.
2. If more time is needed in the Learn mode, then turn the Learn switch back ON to reset the fifteen minute
timer.
Learn U/DNT1-5 and U/DETS Positions, LEARN U/DTS POSITIONS
Description: The positions for the normal and emergency terminal limit switches have not been learned.
Car Reaction: The elevator can only be run on Inspection or Test modes.
Troubleshooting: Perform the normal and emergency terminal limit switches learn operation (Learn tab on
the iView Terminal Switches Configuration screen)
Learn U/DNT1-5 and U/DETS Speeds, LEARN U/DTS SPEEDS
Description: The speeds for the normal and emergency terminal limit switches have not been learned.
Car Reaction: The elevator can only be run on Inspection or Test modes.
Troubleshooting: Perform the normal and emergency terminal limit switches learn operation (Learn tab on
the iView Terminal Switches Configuration screen)
Learning empty load values, LEARNING EMPTY LOAD
Description: Empty car load learn calibration has been initiated.
Car Reaction: Car will start load learn process.
Learning full load values, LEARNING FULL LOAD
Description: Full car load learn calibration has been initiated.
Car Reaction: Car will start load learn process.
6-52 Manual # 42-02-2222
iControl Messages