ABB RCNA-01 Bedienungsanleitung Seite 370

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Seitenansicht 369
366 Diagnostics and maintenance
ACH550-01 User's Manual
2
DC OVERVOLT 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 1 and 2206 DECELER
TIME 2)
undersized brake chopper (if present).
3
DEV OVERTEMP Drive heatsink is overheated. Temperature is
at or above limit.
R1…R4: 115 °C (239 °F)
R5/R6: 125 °C (257 °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.
4 SHORT CIRC Fault current. Check for and correct:
a short-circuit in the motor cable(s) or
motor
supply disturbances.
5
RESERVED Not used.
6
DC UNDERVOLT Intermediate circuit DC voltage is not
sufficient. Check for and correct:
missing phase in the input power supply
•blown fuse
undervoltage in mains.
7
AI1 LOSS Analogue input 1 loss. Analogue input value
is less than
AI1 FAULT LIMIT (3021). Check for
and correct:
source and connection for analogue input
parameter settings for
AI1 FAULT LIMIT
(3021) and 3001
AI<MIN FUNCTION.
Fault
code
Fault name in
the panel
Description and
recommended corrective action
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