TAVRIDA ELECTRIC Rec15/25 Al1 5p, User Manual, Page: 82 / 136

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7.2.3.5 Loss of AC Supply
Possible reason Malfunction identification procedure Corrective action
Auxiliary voltage transformer malfunction
Check the voltage at the power supply input
terminals (Figure 76) If the voltage is less than 85 V
it is a malfunction of the auxiliary voltage
transformer
Check the auxiliary voltage transformer
and its wiring, fix the malfunctioning
component
PSFM malfunction
If the voltage is between 85-265 V, check the
voltage at the RCM input (Figure 77) If the voltage is
less than 85 V, the malfunction is in the PSFM
Replace PSFM
RCM malfunction In case the voltage at the RCM inputs is between
85-265 V it is an RCM malfunction
Replace the RCM
Figure 81
Auxiliary supply connections inside PSFM
Figure 82
RCM auxiliary supply connections
7.2.3.6 Battery Fault
Possible reason Malfunction identification procedure Corrective action
The battery is disconnected
by the battery switch
Check if the battery switch is in the ON position
Check that the battery is properly connected to the Turn the battery switch to ON position.
Provide reliable connection of wiring