Troubleshooting 9-1
MN762
Chapter 9
Troubleshooting
The VS1MX continuously monitors its status and operation. When a fault occurs, the event and drive status is captured to
help you troubleshoot problems. The following are designed to help in troubleshooting:
• LEDs on the keypad indicate status (Stop, FWD, REV, Jog).
• Fault Codes displayed on the keypad display as they occur.
• A log of these faults and the time each occurred is kept in the Event Log.
• A trace log for each event stored in the Event log.
9.1 Fault Codes
Fault codes indicate conditions within the drive that require immediate attention. The drive responds to a fault by initiating a
coast-to-stop sequence and turning off motor power.
1. Note the fault code on the display. See Table 9-1 for a description of the fault and corrective actions. The cause must be
corrected before the fault can be cleared.
2. Remove the condition which caused the trip and press the STOP key or re-enable the drive.
3. The drive will restart according to the mode selected by P29.
4. If the motor is stopped and the display shows STOP, there is no fault; the drive output is disabled and the drive is ready
to run.
Read fault log as follows:
1. Press and hold the Navigate to enter program mode.
2. Use the Up / Down arrow keys to select P20 - Trip Log.
3. Press Navigate to access the fault log. The last four faults can be monitored using the Up / Down arrow keys to view.
4. The codes appear in the order they occurred with the first fault displayed being the most recent.
9.2 Periodic Inspection
A periodic inspection schedule for the drive and driven equipment promotes proper operation and reduces down time. The
frequency of inspections depends on operating environment. Inspections should be conducted more frequently in hostile
conditions where there might be high vibration, dust, dirt, high humidity, or corrosive atmosphere.
• Check for any loose mounting hardware and tighten to specified torque value.
• Check electrical connections are tight and secure.
• Check the cooling fan and heatsink for debris. Remove obstructions as necessary.
