Drive Control Via Uss - Siemens SINAMICS G120C Operating Instructions Manual
Low voltage converters
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Also See for SINAMICS G120C:
- Operating instructions manual (470 pages) ,
- Compact operating instructions (92 pages) ,
- Getting started (68 pages)
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8.8
Drive control via USS
Overview
USS is used to transfer cyclic process data and acyclic parameter data between precisely
one master and up to 31 devices. The converter is always the device, and sends data when
requested to do so by the master. Device-to-device communication is not possible.
Function description
Control word 1 (STW1)
Bit Meaning
0
1
2
3
4
5
6
7
8, 9 Reserved
10
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
0 = OFF1
0 → 1 = ON
0 = OFF2
1 = No OFF2
0 = Quick stop (OFF3)
1 = No quick stop (OFF3) The motor can be switched on (ON command).
0 = Inhibit operation
1 = Enable operation
0 = Disable RFG
1 = Do not disable RFG
0 = Stop RFG
1 = Enable RFG
0 = Inhibit setpoint
1 = Enable setpoint
0 → 1 = Acknowledge
faults
0 = No control via PLC
1 = Control via PLC
Explanation
The motor brakes with the ramp-down time p1121 of
the ramp-function generator. The converter switches
off the motor at standstill.
The converter goes into the "ready" state. If, in addi‐
tion, bit 3 = 1, the converter switches on the motor.
Switch off the motor immediately, the motor then
coasts down to a standstill.
The motor can be switched on (ON command).
Quick stop: The motor brakes with the OFF3 ramp-
down time p1135 down to standstill.
Immediately switch-off motor (cancel pulses).
Switch-on motor (pulses can be enabled).
The converter immediately sets its ramp-function gen‐
erator output to 0.
The ramp-function generator can be enabled.
The output of the ramp-function generator stops at the
actual value.
The output of the ramp-function generator follows the
setpoint.
The converter brakes the motor with the ramp-down
time p1121 of the ramp-function generator.
Motor accelerates with the ramp-up time p1120 to the
setpoint.
Acknowledge fault. If the ON command is still active,
the converter switches to the "switching on inhibited"
state.
Converter ignores the process data from the fieldbus.
Control via fieldbus, converter accepts the process data
from the fieldbus.
Advanced commissioning
8.8 Drive control via USS
Signal inter‐
connection
in the con‐
verter
p0840[0] =
r2090.0
p0844[0] =
r2090.1
p0848[0] =
r2090.2
p0852[0] =
r2090.3
p1140[0] =
r2090.4
p1141[0] =
r2090.5
p1142[0] =
r2090.6
p2103[0] =
r2090.7
p0854[0] =
r2090.10
235
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