Contents Of The Fieldbus Control Word - ABB ACS880 Firmware Manual



Contents of the fieldbus Control word

The upper case boldface text refers to the states shown in the state diagram (page
383).
Bit Name
0 Off1 control
1 Off2 control
2 Off3 control
3 Run
4 Ramp out zero
5 Ramp hold
6 Ramp in zero
7 Reset
8 Inching 1
9 Inching 2
10 Remote cmd
11 Ext ctrl loc
12 to 15 Reserved.
Fieldbus control through a fieldbus adapter 381
Value STATE/Description
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 a 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 motor and driven machine can be
stopped using this stop mode.
1 Proceed to OPERATION ENABLED.
Note: Run enable signal must be active; see drive documentation. If
the drive is set to receive the Run enable signal from the fieldbus, this
bit activates the signal.
0 Inhibit operation. Proceed to OPERATION INHIBITED.
1 Normal operation. Proceed to RAMP FUNCTION GENERATOR:
OUTPUT ENABLED.
0 Force Ramp function generator output to zero. The drive will
immediately decelerate to zero speed (observing the torque limits).
1 Enable ramp function.
Proceed to RAMP FUNCTION GENERATOR: ACCELERATOR
ENABLED.
0 Halt ramping (Ramp Function Generator output held).
1 Normal operation. Proceed to OPERATING.
Note: This bit is effective only if the fieldbus interface is set as the
source for this signal by drive parameters.
0 Force Ramp function generator input to zero.
0=>1 Fault reset if an active fault exists. Proceed to SWITCH-ON
INHIBITED.
Note: This bit is effective only if the fieldbus interface is set as the
source of the reset signal by drive parameters.
0 Continue normal operation.
1 Accelerate to inching (jogging) setpoint 1.
Notes:
• Bits 4...6 must be 0.
• See also section
0 Inching (jogging) 1 disabled.
1 Accelerate to inching (jogging) setpoint 2.
See notes at bit 8.
0 Inching (jogging) 2 disabled.
1 Fieldbus control enabled.
0 Control word and reference not getting through to the drive, except
for bits 0...2.
1 Select External Control Location EXT2. Effective if control location is
parameterized to be selected from fieldbus.
0 Select External Control Location EXT1. Effective if control location is
parameterized to be selected from fieldbus.
Jogging (page 41).