8. TROUBLESHOOTING
8 - 17
Alarm No.: 47
Name: Cooling fan error
Alarm content
The speed of the servo amplifier cooling fan decreased.
Or the cooling fan speed decreased to the alarm occurrence level or less.
Display Detail name
Cause
Check method
Check result
Action
47.2
(1) Foreign matter was
caught in the cooling fan.
Something has been
caught.
Remove the foreign
matter.
Cooling fan
speed
reduction error
Check if a foreign matter
is caught in the cooling
fan.
Nothing has been
caught.
Check (2).
(2) Cooling fan life expired. Check the cooling fan
speed.
The fan speed is less
than the alarm
occurrence level.
Replace the servo
amplifier.
Alarm No.: 50
Name: Overload 1
Alarm content
Load exceeded overload protection characteristic of servo amplifier.
Display Detail name
Cause
Check method
Check result
Action
50.1 Thermal
overload error 1
during operation
(1) The servo motor power
cable was disconnected.
Check the servo motor
power cable.
It is disconnected.
Repair or replace the
servo motor power
cable.
It is not disconnected.
Check (2).
(2)
It is incorrect.
Connect it correctly.
The connection of the
servo motor is incorrect.
Check the wiring of U, V,
and W.
It is correct.
Check (3).
(3)
It is not released.
Release the
electromagnetic brake.
The electromagnetic
brake has not released.
(The electromagnetic
brake has been
activated.)
Check if the
electromagnetic brake is
released during
operation.
It is released.
Check (4).
(4)
Check the effective load
ratio.
The effective load ratio is
high.
Reduce the load. Or use
a larger capacity motor.
A current was applied to
the servo amplifier in
excess of its continuous
output current.
The effective load ratio is
small.
Check (5).
(5)
It is not correct.
Connect it correctly.
The connection
destination of the
encoder cable is
incorrect.
Check if the encoder
cable is connected
correctly.
It is correct.
Check (6).
(6)
Check if it is resonating. It is resonating.
Adjust gains.
The servo system is
unstable and resonating.
It is not resonating.
Check (7).
(7) The servo amplifier is
malfunctioning.
It is not repeatable.
Replace the servo
amplifier.
Replace the servo
amplifier, and then check
the repeatability.
It is repeatable.
Check (8).
(8) An encoder is
malfunctioning.
Replace the servo motor,
and then check the
repeatability.
It is not repeatable.
Replace the servo motor.
50.2 Thermal
overload error 2
during operation
Check it with the check method for [AL. 50.1].
50.3 Thermal
overload error 4
during operation
Summary of Contents for MELSERVO-JE MR-JE-100A
Page 23: ...1 FUNCTIONS AND CONFIGURATION 1 12 MEMO ...
Page 29: ...2 INSTALLATION 2 6 MEMO ...
Page 91: ...3 SIGNALS AND WIRING 3 62 MEMO ...
Page 171: ...5 PARAMETERS 5 44 MEMO ...
Page 195: ...6 NORMAL GAIN ADJUSTMENT 6 24 MEMO ...
Page 221: ...7 SPECIAL ADJUSTMENT FUNCTIONS 7 26 MEMO ...
Page 249: ...8 TROUBLESHOOTING 8 28 MEMO ...
Page 255: ...9 DIMENSIONS 9 6 MEMO ...
Page 263: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 293: ...11 OPTIONS AND PERIPHERAL EQUIPMENT 11 30 MEMO ...