Siemens SINAMICS G120 - Page 191

Speed monitoring
● When the motor is switched on, the inverter compares the load speed with the speed limit,
taking the hysteresis into account.
6SHHG
6SHHGOLPLW
+\VWHUHVLV
+\VWHUHVLV
1HJDWLYHVSHHGOLPLW
6SHHGEHORZOLPLW
YDOXH
212))
660
660
W
W
W
Figure 5-30 Time response of the SSM safety function with hysteresis
Filter
The signal filters smoothes the speed measured by the inverter. Use the filter if you wish to
monitor speeds that lie just below the speed limit.
6SHHG
6SHHGOLPLW
6SHHGEHORZOLPLW
YDOXH
:LWKRXWILOWHU
:LWKILOWHU
660
W
W
Figure 5-31 Mode of operation of the filter of the SSM function
Parameter Description
p9501.00 1 signal: Enable extended functions.
0 signal: Disable extended functions.
p9501.16 1 signal: Enable hysteresis and filtering
0 signal: Disable hysteresis and filtering
p9545 Filter time (Factory setting: 0 ms)
p9546 Speed limit (Factory setting: 20 rpm)
p9547 Hysteresis (Factory setting: 10 rpm)
Commissioning
5.12 Setting extended functions
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD 191