Siemens RAJA+ Installation, Maintenance & Troubleshooting Manual page 21

Installation, Maintenance & Troubleshooting guide | Version 02
If fault still exists, then
5G : - Check the rated operational voltage of the starter in incoming terminal block (TB1) between L1-L2, L2-L3, L1-L3 with
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suitable equipment e.g. multimeter.
- Check whether the 3-phase voltage in the incoming terminals of terminal block TB1 is >Maximum voltage allowed.
(Refer table no.13).
5H : - Keep the 3-phase voltage to the incoming terminals of terminal block TB1 to a voltage between min.required voltage
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& Max.voltage allowed (Refer table no.13).
- Repeat the steps from 5A to 5E and then go to step no.5I
If fault still exists, then
5G : - Check the rated operational voltage of the starter in incoming terminal block (TB1) between L1-L2, L2-L3, L1-L3.
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- Check whether the operational line voltage difference between any 2 phase in the incoming. terminals of terminal block
TB1 is >50V.
5H : - Starter will be operational only if the incoming supply voltage difference between any 2 phase in the incoming terminal
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block TB1 of the starter is <=50V.
- Repeat the steps from 5A to 5E and then go to step no.5I
5I : Amber LED will remain ON continously indicating that the fault is cleared
5J : Press the Green ON push button to switch ON the starter.
5K : Motor gets switched ON. Star & Line contactor switches ON together initially, then after 6sec (depending upon the time
setting of star delta timer), star contactor switches OFF and Delta contactor switches ON.
5L : Green LED turns ON indicating that the motor is ON.
Table: 13 Range of Under voltage & Over voltage
Starter
Voltage Range
undervoltage fault
(V)
(Z6) 200-400
(Z8) 260-460
(R0) 323-457
(Q0) 304-418
2) LMR-A: Auto mode
5A : Check the mode of LMR-A, if it is Auto mode. Repeat steps from 5B to 5H.
5I : Amber LED will remain ON continously indicating that the fault is cleared
5J : No need to press ON push button
5K : Starter gets switched ON. Star & Line contactor switches ON together initially, then after 6sec
(depending upon the time setting of star delta timer), star contactor switches OFF and Delta contactor switches ON.
5L : Green LED turns ON indicating that the motor is ON.
3) LMR-A: Bypass mode
As in Bypass mode there is no protection from the incoming supply faults, however there may some conditions,
example mentioned below where Starter may not ON –
1. Phase loss
2. Incmoing 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.
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Undervoltage fault
Trip voltage for
Healthy voltage
(V)
≤ 195
≤ 250
≤ 313
≤ 294
Trip voltage for
Overvoltage fault
(V)
205 ≥ 400
260 ≥ 455
323 ≥ 457
304 ≥ 418
Overvoltage fault
Healthy voltage
(V)
390
445
447
408
(V)