Siemens SINAMICS S120 Installation And Start-Up Manual page 94

Communication via PROFIBUS
Cyclic communication
CTW1 (control word 1)
See function diagram [2442]
Table 4-3 Description of CTW1 (control word 1)
Bit Meaning
0 ON/OFF1
OFF2
1
Note:
Control signal OFF2 is generated by ANDing BI: p0844 and BI: p0845.
OFF3
2
Note:
Control signal OFF3 is generated by ANDing BI: p0848 and BI: p0849.
3 3 Enable operation Enable operation
Inhibit ramp function Inhibit ramp-function
4 4
generator
Enable the ramp f nction Enable the ramp-function
5
generator
6 Enables the setpoint
Acknowledge fault Acknowledge fault
7 7
Note:
Acknowledgement takes place at a 0/1 edge via BI: p2103 or BI: p2104 or BI: p2105.
8 Reserved
4-94
Comments
ON
0/1
Pulse enable possible
OFF1
0
Braking with the ramp-function generator, then
pulse cancellation and power-on inhibit.
No OFF2
1
Enable possible
OFF2
0
Immediate pulse cancellation and power-on
inhibit
No OFF3
1
Enable possible
Fast stop (OFF3)
0
Braking along the OFF3 ramp (p1135), then
pulse cancelation and power-on inhibit.
Enable operation
1
Pulse enable possible
Inhibit operation
0
Cancel the pulses
Operating condition
1
Ramp-function generator enable possible
Inhibit ramp-function generator
0
Set ramp-function generator output to zero
1 Enable the ramp-function generator
Stop ramp-function generator
0
Freeze ramp-function generator
1 Enable speed setpoint
Inhibit setpoint
0
Set ramp-function generator input to zero
0/1 Acknowledge fault
0 No effect
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SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
BI: p0840
BI: p0844
BI: p0848
BI: p0852 BI: p0852
BI: p1140 BI: p1140
BI: p1141
BI: p1142
BI: p2103 BI: p2103
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E Siemens AG, 2004. All rights reserved
BICO