MCi iControl User Manual page 303

Table 6.3 iControl Messages
Drive Enable Feedback Fault, DRIVE ENABLE FDBK FLT
Description: iControl failed to send the Drive Enable signal to the drive or the drive failed to respond to the
Drive Enable signal. (applies to both AC and DC drives).
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped. Followed by nor-
mal run. Fault will self clear and car is able to run again.
Troubleshooting:
1. This fault may indicate a problem with the Gate Switch, or one of the door locks, opening up during the
initial start of car motion. Verify that the inputs (GS, DLAT, DLAB, DLMS) remain high.
2. Verify that Safety Processors A and B are looping (iBox status LEDs).
3. Verify that there are no faults active on Safety Processors A and B that would prevent motion.
4. Check the iBox power supply.
5. Verify that all drive connections match wiring prints.
Drive Fault, DRIVE FAULT
Description: Detected by the drive, this fault indicates that the motor speed is outside threshold limits
defined by the drive parameter. (TORQMAX drive only.)
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. Verify encoder wiring and polarities.
2. Check F5 drive terminals X2A-29 (Drive Fault) to X2A-26 (Common). The value should be high during
normal operation and low during a fault condition.
3. Verify that the brake is working correctly.
4. Verify drive gains, Proportional Gain (LF.31) and Integral Gain (LF.32).
5. Check drive parameters, Speed Following Error (LF.57), Speed Difference (LF.58), and Following Error
Timer (LF.59). Refer to the TORQMAX manual.
Drive Inspection Overspeed Fault, DRIVE IOS FAULT
Description: Inspection Overspeed fault.
Car Reaction: Emergency stop.
Troubleshooting:
1. Check Inspection speed.
2. Check safety configuration.
3. Calibrate car speed with a hand-held tachometer.
Drive On Fault, DRIVE ON FAULT (was Drive Ready On Fault)
Description: The drive failed to activate the DRO signal when it was sent the command to run (TORQMAX
drives only).
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. Check for fault messages on the F5 drive display and refer to Error Messages and Their Causes in the
TORQMAX manual for suggested solutions.
2. Check the state of the F5 drive inputs by displaying diagnostic parameter LF.82. Refer to the LF.82 input
state table in the TORQMAX F5 drive manual.
3. Check for proper operation of the PM contactor main contacts.
4. Verify that the cable from the F5 drive to the PowerBox (46 pin D-sub) is properly seated.
5. Then verify that the cable that extends to the iBox (AC/DC Drive jack) is properly seated. If the cable
inside the PowerBox is suspect, temporarily connect directly from the F5 drive into the iBox.
6. Verify that Brake Pick Delay is set correctly (0.3 or higher) to allow the motor to build up torque.
7. Verify that F5 drive parameter LF.70 = 0.3.
8. If the DRO fault is accompanied by a Tach Error Fault, this usually indicates improper adjustment of the
TACH ADJ trimpot (see "Verify Pattern Command and Drive Speed Feedback" on page
9. On iView, display the Controller > Diagnostics > Diagnostic Outputs > Drive screen and verify that the
commands are being sent from the iBox to the TORQMAX drive.
iControl Messages
iControl Messages
2-56).
6-27
6