Siemens SINAMICS Series Operating Instructions Manual page 416

Descriptions of functions
10.3 Communication according to PROFIdrive
STW1 (control word 1)
See function diagram [2442].
Table 10- 8 Control word 1 (STW1)
Bit Meaning
0 0 = OFF1 (OFF1)
0 → 1 = ON
1 0 = Coast down (OFF2)
1 = Do not coast down
Note: Control signal OFF2 is generated by ANDing BI: p0844 and BI: p0845.
2 0 = Quick stop (OFF3)
1 = No quick stop
Note: Control signal OFF3 is generated by ANDing BI: p0848 and BI: p0849.
3 0 = Inhibit operation
1 = Enable operation
4 0 = Inhibit ramp-function
generator
1 = Enable ramp-function
generator
5 0 = Stop ramp-function
generator
1 = Start ramp-function
generator
6 1 = Enable speed setpoint
0 = Inhibit speed setpoint
7 0 → 1 = Acknowledge fault
Note: Acknowledgement is realized with a 0/1 edge via BI: p2103 or BI: p2104 or BI: p2105.
8 Reserved
9 Reserved
10 1 = Control via PLC
Note: This bit should not be set to "1" until the PROFIBUS slave has returned an appropriate status via ZSW1.9
= "1".
414
Explanation
0: Deceleration on the down ramp, then pulse
inhibit, line contactor (if present) is opened
Pulse enable possible
0: Pulse inhibit, line contactor (if present) is
opened
Enable possible
0: Deceleration on the quick stop ramp, then
pulse inhibit, line contactor (if present) is opened.
Enable possible
0: Pulse inhibit. The motor coasts down. The
"Ready for Operation" state remains set.
1: Pulse enable, ramp-up with active setpoint
0: The ramp-function generator output is set to
setpoint "0".
0: The current setpoint is frozen at the ramp-
function generator output.
1: The speed setpoint at the input of the ramp-
function generator is enabled.
0: The speed setpoint at the input of the ramp-
function generator is set to zero. The drive
brakes in accordance with the set ramp-down
time.
A positive edge change acknowledges all the
current faults.
1: PROFIBUS control words and setpoints are
analyzed.
0: PROFIBUS control words and setpoints are
not analyzed.
Operating
condition
1
1
1
1
1
1
1
-
-
-
1
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
BICO
BI: p0840
BI: p0844
BI: p0845
BI: p0848
BI: p0852
BI: p1140
BI: p1141
BI: p1142
BI: p2103
-
-
BI: p0854