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Configuring the fieldbus
6.1 Communication via PROFIBUS
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
103
Control word 1 (STW1)
Control word 1 (bits 0 … 10 in accordance with PROFIdrive profile and VIK/NAMUR, bits 11
… 15 specific to inverter).
Table 6- 6
Control word 1 and interconnection with parameters in the inverter
Significance
Bit Value
Telegram 20 All other telegrams
Comments
P No.
0
OFF1
Motor brakes with the ramp-down time p1121 at
standstill (f < f
min
) the motor is switched off.
0
1
ON
With a positive edge, the inverter goes into the "ready"
state, with additionally bit 3 = 1, the inverter switches on
the motor.
p0840[0] =
r2090.0
0
OFF2
Switch off motor immediately, motor coasts to a
standstill.
1
1
No OFF2
---
p0844[0] =
r2090.1
0
Quick stop (OFF3)
Quick stop: Motor brakes with the OFF3 ramp-down
time p1135 down to standstill.
2
1
No quick stop (OFF3)
---
p0848[0] =
r2090.2
0
Disable operation
Immediately switch-off motor (cancel pulses).
3
1
Enable operation
Switch-on motor (pulses can be enabled).
p0852[0] =
r2090.3
0
Lock ramp-function generator
The ramp-function generator output is set to 0 (quickest
possible deceleration).
4
1
Operating condition
Ramp-function generator can be enabled
p1140[0] =
r2090.4
0
Stop ramp-function generator
The output of the ramp-function generator is "frozen".
5
1
Ramp-function generator enable
p1141[0] =
r2090.5
0
Inhibit setpoint
Motor brakes with the ramp-down time p1121.
6
1
Enable setpoint
Motor accelerates with the ramp-up time p1120 to the
setpoint.
p1142[0] =
r2090.6
7 1
Acknowledging faults
Fault is acknowledged with a positive edge. If the ON
command is still active, the inverter switches to"closing
lockout" state.
p2103[0] =
r2090.7
8
Not used
9
Not used
0
PLC has no master control
Process data invalid, "sign of life" expected.
10
1
Master control by PLC
Control via fieldbus, process data valid.
p0854[0] =
r2090.10
11 1
---
1)
Direction reversal Setpoint is inverted in the inverter.
p1113[0] =
r2090.11
12
Not used
13 1
---
1)
MOP up
The setpoint stored in the motorized potentiometer is
increased.
p1035[0] =
r2090.13
14 1
---
1)
MOP down
The setpoint stored in the motorized potentiometer is
decreased.
p1036[0] =
r2090.14
15 1
CDS bit 0
Not used
Changes over between settings for different operation
interfaces (command data sets).
p0810 =
r2090.15
1)
If you change over from another telegram to telegram 20, then the assignment of the previous telegram is kept.
Содержание SINAMICS G120 CU230P-2
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