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ACS550-01/U1 User’s Manual 261

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 Overvoltage 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 Undervoltage 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

IO 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: EXT COMM MODULE or

Group 53: EFB PROTOCOL 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 COMM ERR.

• Parameters in Group 10: START/STOP/DIR and Group 11:

REFERENCE SELECT (if drive operation is REM).

1 2 ... 256 257 258 259 260 261 262 263 264 265 266 ... 319 320

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