ACS550 User’s Manual 207
Diagnostics
Alarm Listing
The following table lists the alarms by code number and describes each.
Alarm
Code
Display Description
2001
OVERCURRENT Current limiting controller is active. Check for and correct:
• Excessive motor load.
• Insufficient acceleration time (parameters 2202
ACCELER TIME 1 and
2205
ACCELER TIME 2).
• Faulty motor, motor cables or connections.
2002 OVERVOLTAGE Over voltage controller is active. Check for and correct:
• Static or transient overvoltages in the input power supply.
• Insufficient deceleration time (parameters 2203
DECELER TIME 1 and
2206
DECELER TIME 2).
2003 UNDERVOLTAGE Under voltage controller is active. Check for and correct:
• Undervoltage on mains.
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
AI1 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
AI2 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)
2008
PANEL LOSS Panel communication is lost and either:
• Drive is in local control mode (the control panel displays LOC), or
• Drive is in remote control mode (REM) and is parameterized to
accept start/stop, direction or reference from the control panel.
To correct check:
• Communication lines and connections
• Parameter 3002
PANEL LOSS.
• Parameters in groups 10
COMMAND INPUTS and 11 REFERENCE
SELECT (if drive operation is REM).
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