MCi iControl User Manual page 344

Troubleshooting
Table 6.3 iControl Messages
Safety Inventory Learn Fault, SFTY INVTRY LEARN FLT
Description: Safety Processor A failed to store inventory values to nonvolatile memory.
Car Reaction: None
Troubleshooting:
1. Relearn the inventory of boards using the Learn operation on the Setup > Safety > Inventory tab.
2. Reset the fault (press the iBox FAULT RESET button).
3. If the fault does not clear, cycle power to the controller. Repeat the first two steps if the fault reoccurs.
4. If the previous steps are unsuccessful, iBox replacement may be indicated.
Safety String Open
Description: Contact in safety circuit is open.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. Refer to the job prints. Verify all safety string switches and wiring.
2. Verify the following have power: SAFC, SAFH, GOV, ESM, and ESC (if the car stop switch bypass is off).
Note that SAFC and SAFH can be bypassed by installing the Safety Bypass Jumper on the IRB board if
the car needs to be moved off the final limits for example).
3. If a rope gripper is installed and the rope gripper option is selected, check RGOK is equal to 1.
4. If a cartop exit is present and the cartop exit option is selected, check that CTEX input is equal to 1.
5. If Unintended Motion was tripped, clear the Unintended Motion fault.
6. Clear any faults left on the iBox display.
7. When the problem is fixed, the fault will automatically clear after 5 seconds.
Safety String Closed (See: Safety String Open)
SCR AC Phase Fault, SCR AC PHASE FAULT
Description: This fault indicates that the 6 feed wires to the M-contactor at the bottom of the System 12
Drive are incorrectly connected. When incorrectly connected, the 30-degree phase angle between X and Y
inputs is lost. DC controls only.
Car Reaction: Emergency Stop.
Troubleshooting:
1. Check for a defective or disconnected 32-pin ribbon cable between SCR_LGA board and iBox.
2. Check if the SCR Drive Diagnostic indicators WYE PR, DELTA PR, or 30-Degree PR are ON.
SCR Armature Voltage On, SCR ARM VOLTAGE ON
Description: Indicates presence of a DC voltage between armature terminals A1 and A2 in excess of 0.7VDC
before RE relay is enabled. DC controls only.
Car Reaction: Failure prevents a normal run.
Troubleshooting:
1. Verify test point TP1 on SCR-LGA board (see Section 8) is 0.0mv when no direction is commanded.
Adjust R2 if needed.
2. Check for defective serial cable between iBox and drive.
3. Check SCR-LGA board (see Section 8).
6-68 Manual # 42-02-2222
iControl Messages