87
9
Malfunction
Item
Malfunction
Detail Indication
Beeping
Pattern
Meaning of
Display
Replacement ( :Most Suspect, :Next Suspect)
Failure Judgment Condition
Indication
pattern at
time of mal-
function
Indication
pattern when
speed switch is
pushed up or
down
Au-
tono-
mous
As-
sis-
tant
Right Unit
Left Unit
Relay Board
Battery
CNT :Controller
board
DRV :Driver
board
ENC :Encoder
EMB :Electromagnetic
brake
Harness
:Wire harness between
relay board and each unit
CNT
Harness
CNT
Harness
DRV
Motor
ENC
EMB
Harness
DRV
Motor
ENC
EMB
Harness
[Right Driver Related]
Beeps
for 2.5
seconds
Setting
switch
malfunc-
tion
The setting switch on the driver
board is malfunctioning.
Beeps
for 2.5
seconds
CAN bus-
off (DRV)
Beeps
for 2.5
seconds
CAN timed
out (DRV)
Beeps
for 2.5
seconds
Start fail-
ure (DRV)
No “standby” signal is returned from
the controller.
Beeps
for 2.5
seconds
Brake mal-
function
The motor has moved when it
should be stopped.
Beeps
for 2.5
seconds
Relay
contacts
melted
The relay on the driver board mal-
function.
Beeps
for 2.5
seconds
Thermistor
malfunc-
tion
The thermistor on the driver board
malfunction.
Beeps
for 2.5
seconds
Speed
pulse error
The encoder malfunction.
Beeps
for 2.5
seconds
Motor wire
open circuit
malfunction
Beeps
for 2.5
seconds
Mag-
netic pole
detection
malfunction
The encoder malfunction.
Beeps
for 2.5
seconds
Amperage
offset
The motor current sensor is mal-
functioning.
Beeps
for 2.5
seconds
Motor
overamp-
erage
The motor current has exceeded
the specified value.