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LCS 230VAC Isolation Monitor User's Manual
FRONT PANEL -
The front panel on the LCS has four indicator lights:
Power (yellow), indicates that power is available.
Charging (green), indicates that AC power is currently applied to the vehicle.
Ground (Earth) Present (amber), indicates the status of the LCS isolation
monitor. Should there be less than approximately 50KOhms of measured resis-
tance to ground (earth), the LED turns on. When the resistance to ground
(earth) exceeds 50KOhms, this LED turns off. The LCS will charge the vehicle
in either condition.
Charging Fault (red), indicates that the LCS is unable to communicate with the
vehicle correctly.
Table 1. Front panel LED information for an isolation monitor-equipped LCS
#
Amber
Power
LED
1
off
2
ON
3
ON
4
ON
5
ON
6
ON
7
ON
8
ON
Isolation (Insulation) Monitor
Green
Ambr
Charging
Ground
LED
LED
off
off
off
ON or off
ON
ON or off
ON or off
ON - not
blinking
ON of off
off
off
ON or off
off
ON or off
off
blinking
Red
Charging
Fault
LED
off
off
Not plugged in to the EV
or the EV is not ready to
off
Charging enabled, power
is applied to the vehicle.
off
Isolation monitor detects
low resistance to ground.
off
ON - not
*Problem with EV com-
blinking
munications. Disconnect
blinking
blinking
Page 4
Fault Condition
No power to EVSE.
Check circuit breaker.
charge.
Isolation monitor de-
tects high resistance to
ground.
and restart.
*EV ground fault trip.
Check vehicle connec-
tion.
*Internal EVSE fault.
Call for service.
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