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ACH550-UH User’s Manual
Diagnostics
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…0411) to aid in troubleshooting a problem. For
example, parameter 0404 stores the motor speed at the time of the fault.
To clear the fault history (all of the Group 04, Fault History parameters):
1. Using the control panel in Parameters mode, select parameter 0401.
2. Press EDIT.
3. Press UP and Down simultaneously.
4. Press SAVE.
Correcting Alarms
The recommended corrective action for alarms is:
•
Determine if the Alarm requires any corrective action (action is not always
required).
•
Use "Alarm Listing" below to find and address the root cause of the problem.
Alarm Listing
The following table lists the alarms by code number and describes each.
Alarm
Code
Display
Description
2001
Reserved
2002
2003
2004
DIR
LOCK
The change in direction being attempted is not allowed. Either:
• Do not attempt to change the direction of motor rotation, or
• Change parameter 1003
DIRECTION
to allow direction change (if
reverse operation is safe).
2005
I
/
O
COMM
Fieldbus communication has timed out. Check for and correct:
• Fault setup (3018
COMM
FAULT
FUNC
and 3019
COMM
FAULT
TIME
).
• Communication settings (Group 51 or 53 as appropriate).
• Poor connections and/or noise on line.
2006
AI
1
LOSS
Analog input 1 is lost, or value is less than the minimum setting.
Check:
• Input source and connections
• Parameter that sets the minimum (3021)
• Parameter that sets the Alarm/Fault operation (3001)
2007
AI
2
LOSS
Analog input 2 is lost, or value is less than the minimum setting.
Check:
• Input source and connections
• Parameter that sets the minimum (3022)
• Parameter that sets the Alarm/Fault operation (3001)
