7-2 Trips and Fault Finding
DC590+ DRV Series DC Digital Drive
Fault Finding
The most valuable tools for finding and resolving faults are the keypad LEDs and display. You can also monitor alarms and troubleshoot faults
remotely through a computer interface if a communications Techbox is installed in the drive.
Initial Troubleshooting Procedure
Most drive problems are encountered during commissioning or soon after start-up. Problems frequently result from incorrect installation or errors in
configuring the drive. If you encounter a problem upon initial start-up of the DRV, see the flowchart below and review the installation procedures in
Chapter 3 and the start-up and adjustment procedures in Chapter 4.
If you have reviewed these procedures and all seems to be in order, refer to Hardware Troubleshooting in this chapter.
3-phase Supply OK
Start Drive and Apply 10 percent Speed Setpoint
Is the LCD Display ON? Is Keypad bad or cable
loose?
See manual Ch 3 -
Control Supply (L, N)
Is 3-phase supply at
terminals L1, L2, L3
correct?
See Ch 7
Control Power Missing
See CX option
information
Are internal fuses F1,
F2, F3 good?
Check external wiring
See Ch 3 - Power
Wiring
Is an alarm displayed? See Ch 7
Trip M es sages
Is there a CX option
installed?
Is it a Frame 1 or 2
DRV?
Control Supply OK
No Alarms
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