Sevcon Gen4, Applications Reference Manual, Page: 118 / 123

Doc. # 177/52701
Rev3
7-8
LED
flashe
s Fault Leve
l Set conditions Operator action
4 Line contactor did not
close S Line contactor did not close
when coil is energized. Check line contactor
condition/wiring.
5 PST fault DI Fault detected on PST power
steer module. Check PST condition.
5 Motor open circuit S Unable to establish current in
motor. Check motor
condition/wiring.
6 Throttle pressed at
power up DI Throttle demand is greater than
20% at power up. Reduce demand
6 Analogue input wire-off VS Analogue input voltage is
outside allowable range. Check analogue
input wiring
6 Analogue output fault
(over/under current,
failsafe, short circuit
driver) VS Analogue output fault caused by
over current (>4A), under
current if actual current < 50%
target (current mode only),
failsafe circuit fault, short circuit
driver MOSFET. Check analogue
output wiring.
7 BDI warning or cut-out I BDI remaining charge is less
than warning or cut-out levels. Charge battery.
7 Battery low voltage
protection I Battery voltage or capacitor
voltage is below a user definable
minimum battery level for a user
definable time. Increase battery
voltage above user
defined level
7 Controller low voltage
protection I Battery voltage or capacitor
voltage is below the minimum
level allowed for the controller. Increase battery
voltage above
minimum level
7 Controller high voltage
protection with line
contactor closed. I Battery voltage or capacitor
voltage is above the maximum
level allowed for the controller
with line contactor closed. Investigate and
reduce battery
voltage below
maximum level.
7 Battery high voltage
protection I Battery voltage or capacitor
voltage is above a user
definable maximum battery level
for a user definable time. Investigate and
reduce battery
voltage below user
defined maximum
level.
7 Motor low voltage
protection I Capacitor voltage has entered
the motor low voltage cutback
region defined in 4612
h
.
Increase battery
voltage above start of
motor low voltage
cutback region.
7 Motor high voltage
protection I Capacitor voltage has entered
the motor high voltage cutback
region defined in 4612
h
.
Reduce battery
voltage below start of
motor high voltage
cutback region.