Description
3.5 Functions
SIRIUS 3RM1 motor starter
32
Manual, 06/2016, A5E0345285095020A/RS-AE/005
3.5
Functions
3.5.1
Switching the 3RM1 motor starter under normal operating conditions
A typical application area of the 3RM1 motor starter is the switching and protection of
motors. You can also operate the 3RM1 motor starter on resistive loads such as heaters.
During operational switching of the 3RM1 motor starter, an auto pause kicks in after the
motor has been switched off. The motor starter does not accept a new start until the pause
time has elapsed.
Table 3- 4
Pause time of 3RM1 motor starters
Version
Article number
Pause time
Standard
3RM10..-….;
3RM12..-….
•
500 ms (E01)
•
100 ms (E02)
Fail-safe
3RM11..-….;
3RM13..-….
•
500 ms (E01)
No distinction is made between direct-on-line and reversing starters in terms of pause time.
Note
Minimum loads must be observed for the 3RM1 motor starters.
You will find additional information in the chapter "Minimum load current (Page 68)".
NOTICE
Damage to property due to high making currents
When using capacitive loads, the switching components in the 3RM1 motor starter can be
damaged by excessively high making currents.
Do not operate capacitive loads such as frequency converters on the 3RM1 motor starter.
Operation of single-phase capacitor motors is admissible.
NOTICE
Damage during operation on non-sinusoidal voltages
When operating frequency converters, the switching components in the 3RM1 motor starter
can be damaged by non-sinusoidal voltages.
Do not operate the 3RM1 motor starter on outputs of frequency converters.