User Manual
3UG4 / 3RR2 monitoring relays 
Manual, 02/2013, NEB927043002000/RS-AA/002 
295 
3UG4651 speed monitoring relay 
13
13.1  Application areas 
Application areas 
The speed monitoring relays are used, for example, in the following applications: 
Table 13- 1  Application areas of the speed monitoring relays 
Function  Application 
•  Monitoring for overload/underload  •  Conveyor belt (monitoring transported goods 
for completeness, for example) 
•  Milling machine 
•  Turning machine 
•  Slippage or tear of a drive belt 
The speed monitoring relays can also be used for all functions where a continuous pulse 
signal is to be monitored (e.g. belt travel monitoring, completeness check, pass monitoring, 
or cycle time monitoring). 










