48/50PD
History
For reference, the last three fault codes are stored into parameters 0401, 0412, 0413. For the most recent fault (identified by parameter 0401), the drive stores additional data (in parameters 0402 through 0411) to aid in troubleshooting a problem. For example, a parameter 0404 stores the motor speed at the time of the fault. To clear the fault history (all of Group 04, Fault History parameters), follow these steps:
1.In the control panel, Parameters mode, select parameter 0401.
2.Press EDIT.
3.Press the UP and DOWN buttons simultaneously.
4.Press SAVE.
Correcting Alarms
To correct alarms, first determine if the Alarm requires any corrective action (action is not always required). Use Table 42 to find and address the root cause of the problem.
If diagnostics troubleshooting has determined that the drive is defective during the warranty period, contact ABB Automation Inc., at
VFD Maintenance
If installed in an appropriate environment, the VFD requires very little maintenance.
Table 43 lists the routine maintenance intervals recommended by Carrier.
Heat Sink
The heat sink fins accumulate dust from the cooling air. Since a dusty sink is less efficient at cooling the drive, overtemperature faults become more likely. In a normal environment check the heat sink annually, in a dusty environment check more often.
Check the heat sink as follows (when necessary):
1.Remove power from drive.
2.Remove the cooling fan.
3.Blow clean compressed air (not humid) from bottom to top and simultaneously use a vacuum cleaner at the air outlet to trap the dust. If there a risk of the dust entering adjoining equipment, perform the cleaning in another room.
4.Replace the cooling fan.
5.Restore power.
86
