
Functions
5.11 Operation in fieldbus systems
Frequency inverter
184
Operating Instructions, 08.10. 2008, t.b.d.
Control and status words
Description
The control and status words fulfill the specifications of PROFIdrive profile version 4.1 for
"speed control" mode.
Control word 1 (STW1)
Control word 1 (bits 0 to 10 in accordance with PROFIdrive profile and VIK/NAMUR, bits 11
to 15 for SINAMICS G120 only).
Table 5- 65 Assignment of control word 1
Bit
Value
Meaning
Comments
0
OFF1
Shutdown, deceleration on the RFG ramp, pulse inhibit
when f < f
min
.
0
1
ON
Switches the converter to "ready for operation" mode. The
direction of rotation must be specified via bit 11.
0
Coast to standstill (OFF2)
Immediate pulse inhibit, drive coasts to standstill.
1
1
No coasting to standstill
All "coast to standstill" (OFF2) commands are canceled.
0
Quick stop (OFF3)
Quick stop: Shut down with the deceleration ramp that can
be additionally set.
2
1
No quick stop
All "quick stop" (OFF3) commands are canceled.
0
Disable operation
Control and converter pulses are disabled.
3
1
Enable operation
Control and converter pulses are enabled.
0
Reset ramp-function generator (RFG)
RFG output is set to 0 (quickest possible deceleration),
converter remains ON.
4
1
Enable ramp-function generator (RFG)
0
Inhibit ramp-function generator (RFG)
The setpoint currently provided by the ramp-function
generator is "frozen".
5
1
Enable ramp-function generator (RFG)
0
Deactivate setpoint
The value selected at the ramp-function generator input is
set to 0 (zero).
6
1
Enable setpoint
The value selected at the ramp-function generator input is
enabled.
7
1
Fault acknowledgment
Fault is acknowledged with a positive edge; the converter
then switches to "starting inhibit" mode.
0
JOG 1 OFF
Drive brakes along the ramp.
8
1
JOG 1 ON
The drive ramps-up to the setpoint for the jog mode
(direction of rotation: CW = clockwise).
0
JOG 2 OFF
Drive brakes along the ramp.
9
1
JOG 2 ON
The drive ramps-up to the setpoint for the jog mode
(direction of rotation: CCW = counter-clockwise).
0
No PLC control
Process data invalid, "sign of life" expected.
10
1
PLC control
Control via interface; process data valid