TAVRIDA ELECTRIC Rec15/25 Al1 5p, User Manual, Page: 85 / 136

85
Figure 85
Main contact position indicator inputs of heavy duty connector of the RC5_4 (upper picture) and umbilical heavy duty
connector from the OSM side (lower picture)
NOTE! To short circuit the two pins of the connectors use two miniature crocodile clips and a wire.
7.2.3.8 Excessive Close Time
Possible reason Malfunction identification procedure Corrective action
OSM coil short/open circuit
Check if the reading in the malfunction log “OSM coil
short circuit” is present
Fix the “OSM coil short circuit” (refer to
7.2.3.10
) or “OSM coil open circuit”
(refer to 7.2.3.9) malfunction first
Driver is not ready
Check that the malfunction “Driver is not ready” is
present
Wait for 1 min and open the OSM
The “Excessive close time malfunction”
will disappear
RCM malfunction
Switch off the RC5_4 and battery
Disconnect plug „8“ from the RCM
The indication of main contact position should
change to “Close”
If the indication doesn’t change to “Close” the
malfunction is in the RCM
Replace the RCM
Short circuit in the wiring connecting the
RCM with control cable
Switch off the RC5_4 and the battery
Disconnect the control cable from the RC5_4.
Switch on the RC5_4 and battery
The indication of main contact position should
change to “Close”
If the indication
doesn’t change to “Close” the
malfunction is in the wiring connecting the RCM with
control cable
Replace the RC5_4
Open circuit in Control Cable
Switch off the RC5_4 and the battery
Connect the control cable to the RC5_4.
Disconnect the control cable from the OSM
Switch on the RC5_4 and the battery
The indication of the main contact position should
change to
“Close”
If the indication doesn’t change to “Close” the
malfunction is in the control cable
Replace the control cable
OSM malfunction
If none of the above described actions helped it is
an OSM malfunction
Replace the OSM
7.2.3.9 OSM Coil Isolated
Possible reason Malfunction identification procedure Corrective action
The OSM is switched off manually Check if the OSM is switched off manually. Return the
OSM to “operated” position.
Wiring connecting drivers of the RCM
and control cable are not properly
connected
Check that wiring connecting the drivers of the RCM
and control cable are properly connected
Connect wiring properly
The RCM malfunction
Switch off the RC5_4 and the battery and wait for 2
minutes
Short circuit inputs 1 and 2 of plug “8” of the RCM
(Figure 81)
Switch on the RC5_4 and the battery
The malfunction readings should change to
“OSM
coil short circuit”
In case the reading doesn’t change the malfunction
is in the RCM
NOTE! Remove the short circuiting wiring after the
test. Connect the wiring to the drivers properly.
Replace the RCM
Wiring assembly in the RC5_4 is open
circuited Switch off the RC5_4 and the battery and wait for 2
minutes
Replace the RC5_4