Description
3.5 Functions
SIRIUS 3RM1 motor starter
Manual, 06/2016, A5E0345285095020A/RS-AE/005
33
If you are operating a 3RM1 motor starter in parallel to a frequency converter on the same
motor, install an isolating contactor. If the frequency converter has an output filter, the
isolating contactor must be installed downstream of this filter.
SIRIUS 3RM13 Failsafe motor starter
Frequency converter, e.g. SINAMICS G120 frame size A with BOB-2, 2nd generation
Figure 3-2 3RM13 as an alternative control to a frequency converter
Direct-on-line starter
Using the 3RM1 motor starter as a direct-on-line starter
All 3RM1 motor starters can be used as direct-on-line starters.
To switch the 3RM1 motor starter on, apply the control voltage at input IN1.
After the motor is switched off, the motor starter accepts a new start after a pause time.
You can also use the versions of the 3RM1 motor starter with a rated operational current up
to 7 A for switching resistive loads up to I
AC51
= 10 A under normal operating conditions.
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