Service manual

Electrical Service Manual V4.0
7
7-3
TRIO CONTROLLER
7000
7001
7500
Wiring fault on 6-way serial link between Trio an
d
LCD
Check the wiring and connectors on the 6 way connections on the Trio and LCD
7501 LCD memory corrupt Disconnect batteries and wait for 1 min before re-applying power
7600
Open circuit on brush motors or brush motor
wiring
Check the Brush motor connection on the Trio and check the wiring from this connector down to the Brush moto
and checking connections all the way. Otherwise possible Brush motor fault.
7601 Brush current overload (“thermal” trip)
Incorrect programming, incorrectly specified Brush motor, Brush motor developing a fault, excessive resistance
on brushes or brushes pushing down too hard on floor.
7602 Brush current overload (“magnetic” trip) Incorrectly specified Brush motor, Brush motor developing a fault
7603 Possible short circuit on brush motors or wiring
Check the Brush motor connection on the Trio and check the wiring from this connector down to the Brush moto
and checking connections all the way. Otherwise possible Brush motor fault.
760
4
Dependent on programming Incorrect software program - check program, otherwise possible controller fault.
7700 Open circuit on vac motors or vac motor wiring
Check the Vac motor connection on the Trio and check the wiring from this connector down to the Vac motor
and checking connections all the way. Otherwise possible Vac motor fault.
7701 Vacuum current overload (“thermal” trip)
Incorrect programming, incorrectly specified Vac motor, Vac motor developing a fault, debris in Vac motor or
airways blocked by debris
7702 Vacuum current overload (“magnetic” trip) Incorrectly specified Vac motor, Vac motor developing a fault
7703 Possible short circuit on vacuum motors or wiring
Check the Vac motor connection on the Trio and check the wiring from this connector down to the Vac motor
and checking connections all the way. Otherwise possible Vac motor fault.
7800
Open circuit on traction motor or traction motor
wiring
Check the Traction motor connection on the Trio and check the wiring from this connector down to the Traction
motor and checking connections all the way. Otherwise possible Traction motor fault.
7801 Possible short circuit on Traction motor or wiring
Check the Traction motor connection on the Trio and check the wiring from this connector down to the Traction
motor and checking connections all the way. Otherwise possible Traction motor fault.
7802
Traction motor current has exceeded current limi
t
for the foldback time
Excessive driving up an incline, or machine driven up against an obstacle or step.
7900 E-stop input active or wiring fault
Check for wiring short circuits on the 20 way connector on the Trio, the 16 way connector on the LCD (if used)
and the wiring to the emergency stop switch and the emergency stop switch itself. Otherwise incorrect operation
of machine.
7901
E-stop input active or wiring fault (programmed
as belly button)
Check for wiring short circuits on the 20 way connector on the Trio, the 16 way connector on the LCD (if used)
and the wiring to the belly button stop switch and the belly button switch itself. Otherwise incorrect operation of
machine.
All 70xx codes – Check wiring of brake and
freewheel switch
Check for wiring short circuits on the 20 way connector on the Trio, the 16 way connector on the LCD (if used)
and the wiring to the ffreewheel switch and the switch itself.. Check the Traction motor connection on the Trio
and check the wiring from this connector down to the electromagnetic brake on the Traction motor and check
connections all the way. Can be caused by excessive pushing or rolling down a slope or incorrect operation of
the machine.