ABB ACS800-104

Option description 13
The table below describes the operation of the STO function in detail depending on:
• status of the STO inputs
• the fault or warning START INHIBI (see chapter Maintenance and fault tracing).
STO status indications
Note: The indications are not safety classified information.
See also chapter Maintenance and fault tracing.
Status of STO inputs When drive is How the STO function operates
START INHIBI
indication
De-energized
running Awakes and trips the drive. Fault
stopped Awakes and disables start. Warning
One energized, other
de-energized
running Awakes and trips the drive. Fault
stopped Awakes and disables start. Warning
Energized running or stopped
STO is on standby. Drive operates
normally.
-
Control program Alarm and status bits / words
System Control Program 08.02 AUX STATUS WORD bit 8
08.21 START INHIBI WORD
Standard Control Program 03.03 AUX STATUS WORD bit 8
Control program Alarms and faults
System Control Program 09.04 ALARM WORD 1 bit 0
09.06 FAULT WORD 3 bit 5
31.02 START INHIBIT ALM
Standard Control Program 03.08 ALARM WORD 1 bit 0
Control program Digital / relay outputs
System Control Program 14 DIGITAL OUTPUTS
Note: To be programmed by the user. For information on
programming the digital outputs, see ACS800 system control program
firmware manual (3AFE64670646 [English]).
Standard Control Program 14 RELAY OUTPUTS
Note: To be programmed by the user. For information on
programming the relay outputs, see ACS800 standard control
program firmware manual (3AFE64527592 [English]).