8. TROUBLESHOOTING
8 - 24
8.3 Remedies for warnings
POINT
When any of the following alarms has occurred, do not cycle the power of the
servo amplifier repeatedly to restart. Doing so will cause a malfunction of the
servo amplifier and servo motor. If the power of the servo amplifier is switched
off/on during the alarms, allow more than 30 minutes for cooling before
resuming operation.
[AL. 91 Servo amplifier overheat warning]
[AL. E0 Excessive regeneration
warning]
[AL.E1 Overload warning 1]
[AL.EC Overload warning 2]
If [AL. E6] or [AL. E9] occurs, the amplifier will be the servo-off status. If any other warning occurs, operation
can be continued but an alarm may take place or proper operation may not be performed.
Remove the cause of warning according to this section. Use MR Configurator2 to refer to the cause of
warning occurrence.
Alarm No.: 91
Name: Servo amplifier overheat warning
Alarm content
The temperature inside of the servo amplifier reached a warning level.
Display Detail name
Cause
Check method
Check result
Action
91.1
(1)
Check the ambient
temperature.
It is over 55
˚
C.
Lower the ambient
temperature.
Ambient temperature of
the servo amplifier has
exceeded 55
˚
C.
It is less than 55
˚
C.
Check (2).
Main circuit
device overheat
warning
(2) The close mounting is
out of specifications.
Check the specifications
of close mounting.
It is out of specifications. Use within the range of
specifications.
Alarm No.: 99
Name: Stroke limit warning
Alarm content
The stroke limit signal is off.
Display Detail name
Cause
Check method
Check result
Action
99.1
(1)
It is not connected.
Connect it correctly.
Forward rotation
stroke end off
The forward rotation
stroke limit switch has
not connected.
Check if the limit switch
is connected correctly.
It is connected.
Check (2).
(2) The forward rotation
stroke limit was
exceeded during driving.
Check if the forward
rotation stroke limit
switch turned off.
It turned off.
Check operation pattern.
99.2
(1)
It is not connected.
Connect it correctly.
Reverse rotation
stroke end off
The reverse rotation
stroke limit switch has
not connected.
Check if the limit switch
is connected correctly.
It is connected.
Check (2).
(2) The reverse rotation
stroke limit was
exceeded during driving.
Check if the reverse
rotation stroke limit
switch turned off.
It turned off.
Check operation pattern.
Alarm No.: E0
Name: Excessive regeneration warning
Alarm content
There is a possibility that regenerative power may exceed permissible regenerative power of built-in
regenerative resistor or regenerative option.
Display Detail name
Cause
Check method
Check result
Action
E0.1 Excessive
regeneration
warning
(1) The regenerative power
exceeded 85% of the
permissible regenerative
power of the built-in
regenerative resistor or
regenerative option.
Check the effective load
ratio.
It is 85% or more.
Reduce the frequency of
positioning.
Increase the
deceleration time
constant.
Reduce the load.
Use a regenerative
option if it is not being
used.
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 ...