Mitsubishi Electric Melservo-J4 Instruction Manual page 123

Alarm No.: F6 Name: Simple cam function - Cam control warning
 The cam axis position restoration at a time of cam control start was a failure.
Alarm content
 The cam control is not normal.
Detail Detail name Cause
No.
F6.1 Cam axis one (1)
cycle current
value
restoration
failed
F6.2 Cam axis feed (1)
current value
restoration
failed
F6.3 Cam (1)
unregistered
error
(2)
(3)
F6.4 Cam control (1)
data setting
range error
F6.5 Cam No. (1)
external error
Check method
The cam axis one cycle Check if the feed current
current value value is within the stroke
corresponding to the in a reciprocating motion
feed current value at pattern of the cam.
cam control start cannot
be restored.
(It occurs in a
reciprocating motion
pattern of the cam.)
The difference Check if the difference
(command unit) (command unit) between
between the restored the restored cam axis
cam axis feed current feed current value and
value and the command the command position at
position at cam control cam control start is in the
start is bigger than "in- "in-position range".
position range".
Cam data has never Check if the cam data
been written. was written.
The cam data of the Check if the cam data of
specified cam No. was the specified cam No.
not written. was written.
Cam data has changed Replace the servo
due to a servo amplifier amplifier, and then check
malfunction. the repeatability.
An out of range value is Check the setting of the
set to the cam control cam control data.
data.
An out of range value is Check the setting of the
set to the cam No. cam No.
Check result
The feed current value is
the outside of the stroke.
The difference of the
command position
(command unit) is not
within "in-position range".
It was not written.
It was written.
It was not written.
It was written.
It is not repeatable.
The setting is incorrect.
The setting is incorrect.
1 TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Action Target
Move the feed current [A]
value to within the stroke [GF]
in a reciprocating motion
pattern of the cam.
Or set the cam standard
position within the stroke
in a reciprocating motion
pattern of the cam.
Calculate the cam axis
feed current value to be
restored, move the
command position to the
position, and then start
the cam control.
(For the calculation
method, refer to the
following.
• Section 12.1.7 (2) of
"MR-J4-_A_-RJ Servo
Amplifier Instruction
Manual (Positioning
Mode)"
MR-J4-_GF_(-RJ)
Servo Amplifier
Instruction Manual (I/O
Mode))
• Section 9.5.7 (2) of
"MR-J4-_GF_(-RJ)
SERVO AMPLIFIER
INSTRUCTION
MANUAL (CC-Link IE
Field Network Basic)"
Or set a larger setting
value to "in-position
range" when the setting
value is extremely small,
such as 0.
Write the cam data.
Check (2).
Write the cam data of the
specified cam No.
Check (3).
Replace the servo
amplifier.
Set it correctly.
Set it correctly.
1.5 Remedies for warnings
1
121