26
ACH550 Installation, Operation and Maintenance Manual
ACH550-UH
22
SUPPLY
PHASE
Ripple voltage in the DC link is too high. Check for and correct:
• Missing mains phase.
• Blown fuse.
• Interaction with external input filter. Set parameter 2619 to “ON”.
23
ENCODER
ERR
Not used (Available only with encoder and parameter Group 50).
23
ENCODER
ERR
The drive is not detecting a valid encoder signal. Check for and correct:
• Encoder presence and proper connection (reverse wired, loose
connection, or short circuit).
• Voltage logic levels are outside of the specified range.
• A working and properly connected Pulse Encoder Interface Module,
OTAC-01.
• Wrong value entered in parameter 5001
PULSE
NR
. A wrong value will
only be detected if the error is such that the calculated slip is greater
than 4 times the rated slip of the motor.
• Encoder is not being used, but parameter 5002
ENCODER
ENABLE
= 1
(
ENABLED
).
24
OVERSPEED
Motor speed is greater than 120% of the larger (in magnitude) of 2001
MINIMUM
SPEED
or 2002
MAXIMUM
SPEED
. Check for and correct:
• Parameter settings for 2001 and 2002.
• Adequacy of motor braking torque.
• Applicability of torque control.
• Brake chopper and resistor.
25
RESERVED
Not used as of the publication of this manual.
26
DRIVE
ID
Internal fault. Configuration Block Drive ID is not valid. Contact your local
ABB sales representative.
27
CONFIG
FILE
Internal configuration file has an error. Contact your local ABB sales
representative.
28
SERIAL
1
ERR
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.
29
EFB
CONFIG
FILE
Error in reading the configuration file for the embedded fieldbus.
30
FORCE
TRIP
Fault trip forced by the fieldbus. See the fieldbus User’s Manual.
31
EFB
1
Fault code reserved for the embedded fieldbus (EFB) protocol application.
These codes are not used as of the publication of this manual.
32
EFB
2
33
EFB
3
34
MOTOR
PHASE
Fault in the motor circuit. One of the motor phases is lost. Check for and
correct:
• Motor fault.
• Motor cable fault.
• Thermal relay fault (if used).
• Internal fault.
Fault
Code
Fault Name In
Panel
Description and Recommended Corrective Action
