Mitsubishi Electric MELSERVO MR-J4-B-RJ Series, Instruction Manual

Page: 107 / 174

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 100
Alarm No.: 98 Name: Software limit warning
Alarm content A software limit set with the parameter was reached for the positioning function.
Detail
No.
Detail name Cause Check method Check result Action Target
98.1 Forward
rotation-side
software stroke
limit reached
(1) A software limit was set
within the actual
operation range.
Check if the parameter
settings ([Pr. PT15] to
[Pr. PT18]) to the
operation range are
correct. The setting was out
of operation range. Set [Pr. PT15] to
[Pr. PT18] correctly. [A]
[GF]
The setting was
within operation
range. Check (2).
(2) A point table of the
position data which
exceeds the software
limit was executed.
Check if the target
position of the point
data to the operation
range was correct. The setting was out
of operation range. Set the point table
correctly.
The setting was
within operation
range. Check (3).
(3) A software limit was
reached by using the
JOG operation or
manual pulse generator
operation.
Check if the JOG
operation or manual
pulse generator
operation was
executed properly to
the operation range. It reached to the out
of operation range. Operate within the
software limit.
Adjust properly the
parameters such as
JOG speed and
multiplication of the
manual pulse as
necessary.
98.2 Reverse
rotation-side
software stroke
limit reached
Check it with the check method for [AL. 98.1].
Alarm No.: 99 Name: Stroke limit warning
Alarm content The stroke limit signal is off.
Detail
No.
Detail name Cause Check method Check result Action Target
99.1 Forward
rotation stroke
end off
(1) The forward rotation
stroke limit switch is
connected to LSP.
Check if the limit
switch is connected
correctly. It is not connected. Connect it correctly. [A]
[GF]
It is connected. Check (2).
(2) The forward rotation
stroke end was
exceeded during driving.
Check if the forward
rotation stroke limit
switch turned off. It turned off. Check operation
pattern.
99.2 Reverse
rotation stroke
end off
(1) The reverse rotation
stroke limit switch is
connected to LSN.
Check if the limit
switch is connected
correctly. It is not connected. Connect it correctly.
It is connected. Check (2).
(2) The reverse rotation
stroke end was
exceeded during driving.
Check if the reverse
rotation stroke limit
switch turned off. It turned off. Check operation
pattern.
99.4 Upper stroke
limit off
(1) The upper stroke limit
switch is not connected
to FLS of the controller.
Check if the limit
switch is connected
correctly. It is not connected. Connect it correctly. [GF]
It is connected. Check (2).
(2) The upper stroke limit
was exceeded during
driving.
Check if the upper
stroke limit switch
turned off. It turned off. Check operation
pattern.
99.5 Lower stroke
limit off
(1) The lower stroke limit
switch is not connected
to RLS of the controller.
Check if the limit
switch is connected
correctly. It is not connected. Connect it correctly.
It is connected. Check (2).
(2) The lower stroke limit
was exceeded during
driving.
Check if the lower
stroke limit switch
turned off. It turned off. Check operation
pattern.