Operator control and monitoring
7.2 Displays and location of the connections
SIRIUS 3RM1 motor starter
108 Manual, 11/2013, A5E0345285095020A/RS-AB/002
Signaling faults on external I/O
Fault signaling output
Faults are signaled via relay outputs as well as via the LEDs.
In the event of a fault, contact (95-98) closes and contact (95-96) opens. The faults that
result in pick-up of the relays are listed in the chapter "Status indicators of the 3RM1 motor
starter (Page 106)".
The Standard motor starters with a control voltage of 24 V DC (3RM10..-.AA0. and 3RM12..-
.AA0.) have a feedback output (OUT Run) referred to M (A2) that outputs a high level when
the motor is in operation. Since the current flow is not monitored in the first five seconds after
switching on the device, the feedback output outputs the high level at least for this time.
The output is non-floating and can be loaded with up to one control input of a PLC. The
maximum continuous current of the output is 15 mA.
The safety-related motor starters (3RM11 Failsafe/3RM13 Failsafe) and the Standard motor
starters (3RM10/3RM12) with a control voltage of 110 to 230 V/110 V DC (3RM1...-.AA1.) do
not have a feedback output.
Fault rectification
Malfunction
A malfunction (Page 35) is acknowledged by switching the control supply voltage back on
and then pressing the "TEST/RESET/RESET MODE" pushbutton.
The following malfunctions can occur:
● Damage to the power semiconductors
● Damage to the relay contacts
● Faults in the control electronics
If a malfunction is repeatedly indicated, the 3RM1 motor starter is defective and must be
replaced.
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