The Control Word - ABB ACS 400 User Manual

The Control Word

Holding register: 40001
The Control Word is the principal means for controlling ACS 400 from a fieldbus system. It is sent
by the fieldbus master station to the drive. ACS 400 switches between its states according to the
bit-coded instructions on the Control Word.
Note! In order to use Control Word the drive must be configured to receive control
commands from the serial communication channel. Refer to "Control Locations" on
page 100.
The contents of the Control Word is presented in the following table. The text in italics refers to the
states in Figure 43.
Table 21 The Control Word.
Bit Value
0 1 Enter
0 Emergency OFF. Ramp to stop according to parameter 2203
DECELER TIME
unless other interlocks (OFF2, OFF3) are active.
ON
1 1 Continue operation (OFF2 inactive)
0 Emergency OFF, coast to stop.
Enter
2 1 Continue operation (OFF3 inactive)
0 Emergency stop. Drive ramps to stop according to parameter 2205
DECELER TIME
INHIBITED
3 0 -1 Enter
must be present on a digital input – see parameter 1601
ENABLE
0 Inhibit operation. Enter
4 Unused.
5 1 Normal operation.
Enter
0 Halt ramping (Ramp Function Generator output held)
6 1 Normal operation. Enter
0 Force Ramp Function Generator input to zero.
7 0 - 1 Fault reset (enter
0 (Continue normal operation)
8 to 10 Unused
11 1 Select external control location 2 (
0 Select external control location 1 (
12 to 15 Unused
Note! Control and status word operation conforms to ABB Drives Profile with the exception
of bit#10 (REMOTE_CMD) which is not used by the ACS 400.
108
Description
READY TO OPERATE
1. Enter 1
OFF ACTIVE
2 ; proceed to
OFF ACTIVE
2. Enter 3
OFF ACTIVE
.
(Note that also the Run enable signal
OPERATION ENABLED
.
OPERATION INHIBITED
RAMP FUNCTION GENERATOR
OPERATING
-
SWITCH ON INHIBITED
; proceed to
READY TO SWITCH
- .
SWITCH ON INHIBITED
; proceed to
SWITCH
:
ACCELERATOR ENABLED
)
2)
EXT
1)
EXT
-
ON
RUN
ACS 400 User's Manual