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Connection to a fieldbus
6.3 Communication via PROFIBUS
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
115
Control word 3 (STW3)
Control word 3 has the following default assignment. You can change the assignment with
BICO technology.
Table 6- 10 Control word 3 and interconnection with parameters in the inverter
Significance
Bit Valu
e
Telegram 350
All other
telegrams
Remarks
P No.
0 1
Fixed setpoint, bit 0
Not used
p1020[0] =
r2093.0
1 1
Fixed setpoint, bit 1
Not used
p1021[0] =
r2093.1
2 1
Fixed setpoint, bit 2
Not used
p1022[0] =
r2093.2
3 1
Fixed setpoint, bit 3
Not used
Selects up to 16 different fixed setpoints.
p1023[0] =
r2093.3
4 1
DDS selection, bit 0
1)
p0810 =
r2093.4
5 1
DDS selection, bit 1
1)
Changes over between settings for different motors
(drive data sets).
p0811 =
r2093.5
6 –
Not used
7 –
Not used
8 1
Technology controller
enable
1)
--
p2200[0] =
r2093.8
9 1
DC braking enable
1)
--
p1230[0] =
r2093.9
10 –
Not used
11 1
1 = Enable droop
1)
Enable or inhibit speed controller droop.
p1492[0] =
r2093.11
1
Torque control active
12
0
Speed control active
1)
Changes over the control mode for vector control.
p1501[0] =
r2093.12
14 –
Not used
15 1
CDS bit 1
1)
Changes over between settings for different
operation interfaces (command data sets).
p0811[0] =
r2093.15
1)
If you change over from telegram 350 to another one, then the assignment of the telegram 350 is kept.