6
troubleshooting
6-5
Error alarms (internal causes)
n
No.
Message
Meaning
Possible Cause
Action
81
AC POWER DOWN
Drop in control power
supply voltage.
Power supply voltage too low.
Check the power supply.
Momentary power outage (below 50%
of specified input voltage) occurred
for more than 40ms.
TS-X
TS-P
Power supply does not have
sufficient capacity.
82
ENCODER ERROR
Error occurred during
data exchange with
position detector.
Robot I/O cable is not securely
connected.
Connect the robot I/O
cable correctly.
Robot I/O cable broke or failed.
Replace the robot I/O
cable.
Wrong combination of controller and
robot.
Connect the correct
controller to a matching
robot.
Position detector failed.
Replace the motor.
Position detection circuit failed.
Replace the controller.
83
ABS. ENCODER ERR.
TS-X
TS-SH
Robot I/O cable is
disconnected or broke
(when control power
supply is off).
Robot I/O cable is not securely
connected (when control power
supply is off).
Connect the robot I/O
cable correctly.
Robot I/O cable broke or failed (when
control power supply is off).
Replace the robot I/O
cable.
Absolute battery is disconnected.
Connect the absolute
battery correctly.
Absolute battery has worn out or
failed.
Replace the absolute
battery.
84
IPM ERROR
TS-X
TS-P
Excessive current flow
was detected.
Phases U, V and W in the motor
cable are shorted.
Replace the motor cable.
Motor failed.
Replace the motor.
Motor drive circuit failed.
Replace the controller.
85
OVERHEAT
Temperature protection
level (90˚C) was
exceeded.
Ambient temperature is above 40˚C.
Check the ambient
condition.
Thermal sensor failed.
Replace the controller.
86
OVERLOAD
Overload detection level
was exceeded.
Rated current was exceeded.
Reduce the load.
Set the payload correctly.
Lower the duty cycle.
Robot drive system collided with
some objects.
Check the operation
pattern.
Electromagnetic brake is not working.
TS-S
TS-S2
TS-X
TS-SH
Supply the brake power
correctly.
TS-X
Replace the brake.
Wrong robot setting
Make correct robot setting.
87
OVERVOLTAGE
Overload detection level
(45V for
TS-S
TS-S2
TS-SH
or 420V for
TS-X
TS-P
) was
exceeded.
Main power supply voltage exceeded
the specified range.
Check the power supply.
Regenerative unit is not securely
connected.
TS-X
TS-P
Connect the regenerative
unit correctly.
TS-X
TS-P
Regenerative unit connection cable
broke or failed.
TS-X
TS-P
Replace the connection
cable.
TS-X
TS-P
88
LOW VOLTAGE
Power supply voltage
dropped below the low
voltage detection level
(15V for
TS-S
TS-S2
TS-SH
or 180V for
TS-X
TS-P
).
Main power supply voltage does not
reach the specified value.
Check the power supply.
Controller failed.
Replace the controller.
89
POSITION ERROR
Position deviation
overflow level was
exceeded.
Robot drive unit collided with some
objects.
Check the operation
pattern.
Motor cable is not securely
connected.
Connect the motor cable
correctly.
Motor cable broke or failed.
Replace the motor cable.
Wrong robot setting
Make correct robot
setting.
Return-to-origin speed (K13) setting
is too high.
Reduce the setting.