ABB ACH550-01 User Manual page 362

Fault listing
Fault Fault name in
code the panel
1
OVERCURRENT
2
DC OVERVOLT
3
DEV OVERTEMP
4
SHORT CIRC
5
RESERVED
6
DC UNDERVOLT
350
Description and
recommended corrective action
Output current is excessive. Check for and
correct:
• excessive motor load
• insufficient acceleration time (parameters
2202
ACCELER TIME
2)
TIME
• faulty motor, motor cables or connections.
Intermediate circuit DC voltage is excessive.
Check for and correct:
• static or transient over voltages in the
input power supply
• insufficient deceleration time (parameters
2203
DECELER TIME
2)
TIME
• undersized brake chopper (if present).
Drive heatsink is overheated. Temperature is
at or above 115°C (239°F). Check for and
correct:
• fan failure
• obstructions in the air flow
• dirt or dust coating on the heat sink
• excessive ambient temperature
• excessive motor load.
Fault current. Check for and correct:
• a short-circuit in the motor cable(s) or
motor
• supply disturbances.
Not used.
Intermediate circuit DC voltage is not
sufficient. Check for and correct:
• missing phase in the input power supply
• blown fuse
• undervoltage in mains.
Diagnostics and maintenance
ACH550 User's Manual
1 and 2205
ACCELER
1 and 2206
DECELER