Troubleshooting Guidelines In Fault Condition When Motor Stops While It Is In Running Condition - Siemens RAJA+ Installation, Maintenance & Troubleshooting Manual

Installation, Maintenance & Troubleshooting guide | Version 03
3.7: Troubleshooting Guidelines in fault condition when
motor stops while it is in running condition
Table: 19 DOL Controller operating sequence in fault condition
9A 9B
Motor LMR-A
conditon Mode
Not
Manual
Running
Not
Auto
Running
Not
Bypass
Running
#: Phase loss , Phase reversal
1
NA – Starter is unprotected from incoming power supply faults,only protection from load side faults. In this mode, amber LED
will continously ON if incoming power supply is healthy and will blink if the incoming power supply is unhealthy– Refer 3.8
Starter Fault conditon:
1) LMR-A: Manual mode
9A : Motor suddenly stops after running for some time.
9B : Check the mode of LMR-A, if it is Manual mode.
9C : Amber LED will start blinking
9D to 9I : Follow steps from 8G to 8L of Table 17 LMR-A manual mode (Corrective action 1)
9J : Motor starts running again.
2) LMR-A: Auto mode
9A : Motor suddenly stops after running for some time.
9B : Check the mode of LMR-A, if it is Auto mode.
9C : Amber LED will start blinking
9D to 9I : Follow steps from 8G to 8L of Table 17 LMR-A Auto mode (Corrective action 2)
9J : Motor starts running again.
3) LMR-A: Bypass mode
As in Bypass mode there is no protection from the incoming supply faults, however there may be some conditions, example
mentioned below where Starter may not ON –
1. Phase loss
2. Incoming supply voltage less than the minimum required operational voltage of the Starter.
3. Incoming supply voltage is very high
etc.......
In the above conditions check the Starters as explained in Auto & Manual Mode.
15
9C 9D
Amber Possible Corrective
LED causes
of fault
Blink #
Blink #
Blink NA
, Under voltage , Over voltage
2 3
9E 9F
Amber 'ON'
action LED Push
button
1) ON
2) ON
NA ON
ON operation
, Phase unbalance
4 5
9G 9H 9I
Starter Green
operation LED
ON ON ON
NA ON ON
ON ON ON
9J
Motor
conditon
Running
Running
Running