Abb Drives Communication Profile; Control Word And Status Word; Control Word Contents - ABB FSCA-01 User Manual

ABB Drives communication profile

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Control word and Status word

The Control word is the principal means for controlling the drive
from a fieldbus system. The fieldbus master station sends the
Control word to the drive through the adapter module. The drive
switches between its states according to the bit-coded instructions
in the Control word and returns status information to the client in
the Status word.
The contents of the Control word and the Status word are detailed
below. The drive states are presented on page 65.

Control word contents

The table below shows the contents of the Control word for the
ABB Drives communication profile. The upper case boldface text
refers to the states shown in the state machine on page 65.
Bit Name
0 OFF1_
CONTROL
1 OFF2_
CONTROL
2 OFF3_
CONTROL
Value
1 Proceed to READY TO OPERATE.
0 Stop along currently active deceleration
ramp. Proceed to OFF1 ACTIVE; proceed
to READY TO SWITCH ON unless other
interlocks (OFF2, OFF3) are active.
1 Continue operation (OFF2 inactive).
0 Emergency OFF, coast to stop.
Proceed to OFF2 ACTIVE, proceed to
SWITCH-ON INHIBITED.
1 Continue operation (OFF3 inactive).
0 Emergency stop, stop within time defined
by drive parameter. Proceed to OFF3
ACTIVE; proceed to SWITCH-ON
INHIBITED.
Warning: Ensure that motor and driven
machine can be stopped using this stop
mode.
Communication profiles 61
STATE/Description