Rotation Monitoring - Siemens SINAMICS G120 Operating Instructions Manual

6.28.5

Rotation monitoring

The inverter monitors the speed or velocity of a machine component via an electromechanic
or electronic encoder, e.g. a proximity switch. Examples of how the function can be used:
● Gearbox monitoring for traction drives and hoisting gear
● Drive belt monitoring for fans and conveyor belts
● Blocking protection for pumps and conveyor belts
The inverter checks whether the encoder consistently supplies a 24 V signal during motor
operation. If the encoder signal fails for time p2192, the inverter signals fault F07936.
Figure 6-68
Parameter
p2192
p2193 = 3
p3232
For more information, see the List Manual (the parameter list and function diagram 8013).
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
Function plan and time response of the speed monitoring
Description
Load monitoring delay time (factory setting 10 s)
After the motor is switched on, if the "LOW" signal is present at the associated digital
input for longer than this time, the inverter signals a load failure (F07936).
Load monitoring configuration (factory setting: 1)
0: Monitoring switched off
1: Monitoring torque and load drop
2: Monitoring speed and load drop
3: Load failure monitoring
Load monitoring failure detection (factory setting: 1)
Connect the load monitoring to a DI x digital input of your choice. p3232 = 722.x
Advanced commissioning
6.28 Monitoring the driven load
341