ABB ACS2000 AFE 2MVA User Manual page 158

CHAPTER 10 – PREVENTIVE AND CORRECTIVE MAINTENANCE
10.3.3 Fault handling
The faults are entered into the fault buffer as they
occur and are numbered:
• The last fault entered has number 1.
• The first fault entered has the highest number.
Information of the fault classification (eg, FC 1 or
FC 2) is also saved when the first fault of the fault
class is active. Date and time stamps facilitate
fault tracing, especially when a fault leads to sev-
eral subsequent faults.
Example:
1. +Fault AMC: Fault Class 2
16:58:24.3770
2. +Fault PPCS Communication
16:58:24.3760
3. +Fault AMC: Fault Class 1
16:56:02.1170
4. +Fault DC Undervoltage
16:56:02.1170
In the above example,
• 4. +Fault DC Undervoltage is the reason for the
failure of the drive system as it occurred first.
• 3. +Fault AMC: Fault Class 1 classifies the fault.
• 2. +Fault PPCS Communication represents a
subsequent fault that occurred 2 min. 22 s than
the first fault.
• 1. +Fault AMC: Fault Class 2 classifies the fault.
For further information on alarms and
faults, see Appendix G – Signal and
parameter table.
10.3.4 Troubleshooting procedure
If a fault shuts down the drive, proceed as follows:
1. Do not switch off the auxiliary power supply or
try to reset a fault message before all informa-
tion at the time of the occurrence of the fault
condition has been saved.
2. Select the Fault History Display on the CDP
control panel.
For further information, see
control
Do not clear the fault buffer of the drive now!
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3. Identify the fault and make a logbook entry.
4. Save the content of the data logger when a PC
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is available that has the Drive
Debug
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The data logger provides information (eg,
waveforms of voltage, current, torque) for effi-
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cient troubleshooting.
5. Contact ABB service if a fault cannot be recti-
fied.
When calling ABB service, it is recommended to
have the following data available at the time
when the fault occurred:
-
-
After the fault has been rectified, start the drive as
described in
Chapter 9 - CDP
panel.
Window
tool installed.
Operating, ambient and load conditions
Unusual events
Chapter 8 - Operation.
158
or Drive-