Fault And Alarm Status - ABB ACS 400 User Manual

Fault and Alarm Status

The ACS 400 provides fault and alarm status words for the external control system. These data
words are accessible only through the serial communication link but not from the control panel.
Fault and alarm status words are located in parameter group 3. The group also contains copies of
the Control Word and Status Word. Group 3 parameters are of read-only type; however, both alarm
words can be reset by writing a zero to them.
Table 31 Fault and alarm status words.
Code
301
302
305
306
308
309
Table 32 Bit descriptions for fault words 1 and 2. See also the Diagnostics section for more
information about faults and fault codes.
Bit # Fault Word 1
0 Overcurrent
1 DC overvoltage
2 ACS 400 overtemperature
3 Fault current
4 Output overload
5 DC undervoltage
6 Analogue input 1 fault
7 Analogue input 2 fault
8 Motor overtemperature
9 Panel loss
10 Parameters inconsistent
11 DC bus ripple too large
12 Motor stall
13 Serial communication loss
14 External fault
15 Output earth fault
ACS 400 User's Manual
Name Description
Read-only copy of the Control Word. See
MAIN COMMAND WORD
page 127.
Read-only copy of the Status Word. See page 129.
MAIN STATUS WORD
1 Fault information. When a fault is active, the
FAULT WORD
corresponding bit is set. Bit descriptions are given
in Table 32.
2 Fault information. When a fault is active, the
FAULT WORD
corresponding bit is set. Bit descriptions are given
in Table 32.
1 Alarm information. When an alarm is active, the
ALARM WORD
corresponding bit is set. Bits remain set until whole
alarm word is reset by writing 0 to it. See Table 33.
2 Alarm information. When an alarm is active, the
ALARM WORD
corresponding bit is set. Bits remain set until whole
alarm word is reset by writing 0 to it. See Table 33.
Fault Word 2
Underload
Reserved
DDCS link
Reserved
Hardware error
133