Graco LineDriver 25U670, Операция - Ремонт - Запчасти

Страница: 25 / 40

Troubleshooting - Motor Controller
3A9034B 25
17
Severe B+
Undervoltage
1. Non-controller system
drain on battery.
2. Battery resistance too
high.
3. Battery disconnected
while driving.
4. Open B+ fuse or main
contractor did not close
Set: Battery pack voltage
dropped below the Severe
Undervoltage limit with FET
bridge enabled.
Clear: Bring battery pack voltage
above Severe Undervoltage limit.
1. Inspect all cables and
connectors from batteries to
controller.
2. Let battery cool then fully
recharge battery. If error
happens again, load test
battery and replace if needed.
3. Inspect 300 amp fuse and
replace if open.
4. Inspect contactor for corroded
contacts and replace if needed.
Severe Power
Switch
Undervoltage
1. Non-controller system
drain on battery/Power
Switch circuit wiring.
2. Power Switch
disconnected while
driving.
3. Open 20 amp fuse.
Set: Below Brownout Voltage for
2 seconds.
Clear: Bring Power Switch voltage
above Brownout Voltage.
1. Inspect all Power Switch cables
and connectors.
2. Inspect 20 amp fuse and
replace if open.
18
Severe B+
Overvoltage
1. Battery resistance too
high for given regen cur -
rent.
2. Battery disconnected
while regen braking.
Set: Battery pack voltage
exceeded the Severe Overvoltage
limit with FET bridge enabled.
Clear: Bring battery pack voltage
below Severe Overvoltage limit,
and then cycle Power Switch.
1. Let battery cool then fully
recharge battery. If error
happens again, load test
batteries and replace if needed.
2. Inspect all cables and
connectors from batteries to
controller.
Severe Power
Switch Overvoltage
1. Incorrect (too high)
battery-voltage applied
to Power Switch (pin 1).
NOTE: Prevents Main
Contactor closure if Power
Switch is greater than the
Severe Overvoltage limit.
Set: Power Switch voltage
exceeded Severe Overvoltage
limit.
Clear: Bring Power Switch voltage
below the Severe Overvoltage
limit.
1. Check the voltage of each 24V
battery with a digital volt meter.
Inspect Power Switch and
battery wiring for insulation
damage and proper wiring.
22
Controller Overtemp
Cutback
1. Controller is
performance-limited at
this temperature.
2. Controller is operating in
an extreme
environment.
3. Excessive load on
vehicle.
4. Improper mounting of
controller.
Set: Heatsink temperature
exceeded 85°C.
Clear: Bring heatsink temperature
below 85°C.
1. Move the unit to a cooler area.
2. Reduce operating load on
vehicle.
3. Inspect controller heatsink
mounting for air gaps and
tighten fasteners.
23
B+ Undervoltage
Cutback
1. Normal operation. Fault
indicates the batteries
need recharging.
Controller is
performance limited at
this voltage.
2. Battery resistance too
high.
3. Battery disconnected
while driving.
4. Open 300 amp fuse or
main contactor did not
close.
5. Non-controller system
drain on battery.
Set: Battery pack voltage
dropped below the Undervoltage
limit with the FET bridge enabled.
Clear: Bring battery pack voltage
above the Undervoltage limit
(19V).
1. Charge batteries.
2. Let battery cool then fully
recharge battery. If error
happens again, load test
batteries and replace if needed.
3. Inspect all cables and
connectors from batteries to
controller.
4. Inspect 300 amp fuse and
replace if needed.
5. Inspect contactor for damaged,
corroded or contaminated
contacts. Repair or replace as
needed.
CODE DESCRIPTION POSSIBLE CAUSE SET / CLEAR CONDITIONS SOLUTION