Connecting The Evaluation Unit To The Analog Output - Siemens SIRIUS 3RW55 Equipment Manual

Example circuits
A.2 Control circuit connection
Note
3RW55 or 3RW55 Failsafe soft starter with thermistor motor protection in Class I and Class
II Hazardous Locations
Note that operation of a 3RW55 or 3RW55 Failsafe soft starter with thermistor motor protection
in Class I and Class II Hazardous Locations is only possible with a thermistor (e.g. PTC Type A).
You will find further information on the operation of motors in Class I and Class II Hazardous
Locations in chapters ATEX/IECEx-certified motor overload protection (Page 16)
and Temperature sensor (Page 169).
Procedure
1. Connect the temperature sensor:
2. Parameterize the temperature sensor (Page 169).
Result
The 3RW55 and 3RW55 Failsafe soft starters monitor the motor for excessive temperature. If the
temperature is exceeded, a warning is generated or the motor is switched off depending upon
the parameterization. Restarting takes place after a reset.
A.2.5

Connecting the evaluation unit to the analog output

Requirements
• 3RW55 or 3RW55 Failsafe soft starter
• Evaluation unit for displaying the analog output signal
• Parameterized analog output (Page 202)
304
Temperature switch at terminals T1-T2 Thermistor at terminals T1-T2
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006