Fault And Alarm Status - ABB ACS 400 User Manual

Fault and Alarm Status

The ACS 400 provides fault and alarm status words that are accessible only from the serial
communication link (not from the control panel).
These status words are located in place of parameter group 3 (Modbus holding registers 40301-
40309). These registers also contain copies of the Control Word (40001) and Status Word (40004).
Registers 40301-40309 are generally read-only type; however, alarm words can be reset by writing
zero into the register. Table 24 lists the fault and alarm words.
Table 24 Fault and alarm status words.
No
40301
40302
40305
40306
40308
40309
Table 25 Bit descriptions for fault words 1 and 2.
Bit # Fault Word 1
0 Overcurrent
1 DC overvoltage
2 ACS 400 overtemperature
3 Fault current
4 Output overload
5 DC undervoltage
6 Analog input 1 fault
7 Analog 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 ground fault
ACS 400 User's Manual
Name Description
Read-only copy of the Control Word (40001). See
MAIN CONTROL WORD
page 108.
Read-only copy of the Status Word (40004). See
MAIN STATUS WORD
page 110.
1 Fault information. When a fault is active
FAULT WORD
corresponding bit is set. Bit descriptions are given
in Table 25.
2 Fault information. When a fault is active
FAULT WORD
corresponding bit is set. Bit descriptions are given
in Table 25.
1 Alarm information. When an alarm is active
ALARM WORD
corresponding bit is set. Bits remain set until whole
alarm word is reset by writing 0 to it.See Table 26.
2 Alarm information. When an alarm is active
ALARM WORD
corresponding bit is set. Bits remain set until whole
alarm word is reset by writing 0 to it.See Table 26.
Fault Word 2
Underload
Reserved
DDCS link
Reserved
Hardware error
113