39
Service Manual – SW5500, FLOORTEC R 985
05 - Control System
CODE - Description
(shown on multifunction display)
Condition
Effect
Service Suggestions
TR AL.75
CONTACTOR DRIVER
Issue internal to the drive
board.
Drive operation blocked
Switch off and on the machine
by key switch (KEY).
If persists, replace the Main
Machine Controller.
TR AL.78
VACC NOT OK
Pedal analogue output not
minimum at rest
Drive operation blocked
Check the drive pedal (R1)
mechanical position, substitute
the drive pedal.
Pedal output voltage (white
wire) should be less than
0.1Vdc (Pedal is supplied at
12-14Vdc, analogue output is
0-5Vdc).
TR AL.79
INCORRECT START
Pedal pressed on start (pedal
microswitch closed)
Drive operation blocked
Check the drive pedal (R1)
mechanical position, substitute
the drive pedal.
TR AL.82
ENCODER ERROR
Encoder signal not received or
not plausible
Drive operation blocked
Check the encoder (ENC)
wires, replace the encoder,
replace the drive board.
Check for encoder supply
from the drive board: 12-14V
between wire red (+) and wire
black (-).
Check the encoder output: 2
square waves 5V amplitude
90° shifted (frequency is
proportional to the motor rpm)
from wire blue (Phase A) and
wire white (Phase B).
TR AL.86
PEDAL WIRE KO
No pedal negative
Drive operation blocked
Check the accelerator
pedal wiring or replace the
accelerator pedal (R1)
TR AL.208
EEPROM KO
Issue internal to the drive
board.
Drive operation blocked
Switch off and on the machine
by key switch (KEY).
If persists, replace the Main
Machine Controller.
TR AL.209
PARAM RESTORE
Issue internal to the drive
board.
Drive operation blocked
Switch off and on the machine
by key switch (KEY).
If persists, replace the Main
Machine Controller.
TR AL.210
WRONG RAM MEM.
Issue internal to the drive
board.
Drive operation blocked
Switch off and on the machine
by key switch (KEY).
If persists, replace the Main
Machine Controller.
TR AL.211
STALL ROTOR
Motor stall
Drive operation blocked
Check the drive system motor
(M0)
Check the wiring from the motor
wheel Encoder (ENC) and the
Drive Wheel Controller (EB2)
Repare the Encoder wiring or
substitute the sensor
TR AL.212
WRONG RAM
Issue internal to the drive
board.
Drive operation blocked
Switch off and on the machine
by key switch (KEY).
If persists, replace the Main
Machine Controller.
TR AL.218
SENS MOT TEMP KO
Motor thermal sensor out of
scale
Drive operation blocked
Check the drive system motor
temperature sensor (S5) wires,
replace the temperature sensor.