Rockwell Automation 150-E SMC Elevator Users Manual - Manual (Page 24)

24 Rockwell Automation Publication 150-UM0009D-EN-P - February 2011
Chapter 4 Troubleshooting
Table 16 - LED Fault Indication & Diagnostics
Flashes Fault Type Possible Fault Explanations Possible Solutions
1 Overload • Motor overload condition present.
• FLA dial adjustment is not matched to motor type. • Check for motor overload condition.
• Verify actual motor current does not exceed FLA.
• Verify/reset the FLA dial adjustment.
• Program/modify the Overload setting for load or duty
cycle required.
2 Over-Temperature • Controller ventilation blocked.
• Controller duty cycle exceeded.
• Cooling fan not working.
• Ambient temperature exceeded.
• Failed control module.
• Over-current condition with Overload disabled.
• Check for proper ventilation.
• Verify duty cycle.
• Connect or replace cooling fan.
• Wait for controller to cool or provide external coolin.
• Replace control module.
3 Phase Reversal • Incoming supply voltage is not the expected sequence. • Check power wiring.
• Adjust dip switch #9 for desired sequence.
4 Phase Loss/
Open Load • Missing Supply Phase.
• Missing or unable to detect motor connection. • Check for open line (i.e. open fuse).
• Check for incorrect wiring to load.
• Verify proper operation of the fault contactor.
• Verify connection type to motor (LINE or DELTA).
• Ensure product is sized correctly for motor.
5 Phase Imbalance • Unbalanced Phase Currents (> 65% differential).
• Incoming line voltage problem. • Check motor current in each phase to verify imbalance.
Motor current imbalance can indicate potential motor
problem.
6 Shorted SCR • Shorted SCR.
• Welded or latched bypass contactor. • Verify connection type (LINE or DELTA) and verify setting.
• Perform continuity check across power poles (L1 – T1, L2
– T2, L3 – T3). Measurements should exceed 10 k ohms.
For best results, remove line and load motor connections.
• Cycle power to device and attempt to restart. If fault
persists, replace device.
7 Test • Intended operation. • Reset fault.
12 Check Sum • Internal software corruption. • Replace device.