Dcu Communication Profile - ABB ACS350 User Manual

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DCU communication profile

Because the DCU profile extends the control and status interface to 32 bits, two
different signals are needed for both the control (0301 and 0302) and status (0303
and 0304) words.
The following tables describe the Control Word content for the DCU profile.
Bit Name
0 STOP
1 START
2 REVERSE
3 LOCAL
4 RESET
5 EXT2
6 RUN_DISABLE
7 STPMODE_R
8 STPMODE_EM
9 STPMODE_C
10 RAMP_2
11 RAMP_OUT_0
12 RAMP_HOLD
13 RAMP_IN_0
14 REQ_LOCALLOC
15 TORQLIM2
Fieldbus control with embedded fieldbus
DCU Profile Control Word (parameter 0301)
Value
1 Stop according to either the stop mode parameter (2102) or the stop mode requests
(bits 7 and 8).
Note: Simultaneous STOP and START commands result in a stop command.
0 No operation
1 Start
Note: Simultaneous STOP and START commands result in a stop command.
0 No operation
1 Reverse direction. The direction is defined by using the XOR operation on bit 2 and 31
(=sign of the reference) values.
0 Forward direction.
1 Enter local control mode.
0 Enter external control mode.
-> 1 Reset.
other No operation
1 Switch to external control EXT2.
0 Switch to external control EXT1.
1 Activate Run Disable.
0 Activate Run Enable.
1 Stop along currently active deceleration ramp (bit 10). Bit 0 value must be 1 (=STOP).
0 No operation
1 Emergency stop. Bit 0 value must be 1 (=STOP).
0 No operation
1 Coast to stop. Bit 0 value must be 1 (=STOP).
0 No operation
1 Use acceleration/deceleration ramp pair 2 (defined by parameters 2205...2207).
0 Use acceleration/deceleration ramp pair 1 (defined by parameters 2202...2204).
1 Force ramp output to zero.
0 No operation
1 Halt ramping (Ramp Function Generator output held).
0 No operation
1 Force ramp input to zero.
0 No operation
1 Enable local lock. Entering the local control mode is disabled (LOC/REM key of the
panel).
0 No operation
1 Use minimum/maximum torque limit 2 (defined by parameters
0 Use minimum/maximum torque limit 1 (defined by parameters
Information
2016 and 2018).
2015 and 2017).