Description
3.5 Functions
SIRIUS 3RM1 motor starter
42 Manual, 06/2016, A5E0345285095020A/RS-AE/005
Shutdown on malfunction
Shutdown via integrated monitoring
The 3RM1 motor starter has integrated monitoring of the main circuit components. During
operation, the 3RM1 motor starter detects when a switching element fails to switch, or when
a phase has failed.
Monitoring before switching on in the case of 3RM11/3RM13 Failsafe motor starters
In the case of the 3RM11 Failsafe and 3RM13 Failsafe motor starters, monitoring prevents
the load from switching on in the case of the following malfunctions:
● Damage to the power semiconductors
● Damage to the relay contacts
● Faults in the control electronics
A malfunction is acknowledged by switching the control supply voltage back on and then
pressing the "TEST/RESET/RESET MODE" pushbutton.
Loss of the safety function.
Can cause death or serious injury.
Check the safety function after acknowledging a disruption in the case of 3RM11/3RM13
Failsafe motor starters.
Note
If a malfunction is repeatedly indicated, the 3RM1 motor
starter is defective and must be
Safety-related shutdown in the case of 3RM11/3RM13 Failsafe motor starters
Safety-related shutdown is achieved for the 3RM11 Failsafe and 3RM13 Failsafe motor
starters thanks to the special arrangement and checking of the switching elements. Safety-
related shutdown takes place when the control supply voltage is deactivated or by switching
off the control inputs. Malfunctions result in automatic shutdown. You will find further
information in Chapter "Safety-related shutdown with 3RM11/3RM13 Failsafe motor starters
(Page 43)."
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