7 Before Starting Positioning Operation
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FX
3U
-20SSC-H Positioning Block User's Manual
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Int
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Exam
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Table O
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7.9 Other functions
2. Details of control
The operation with the torque limit is as follows.
*5.
While the servo motor is stopped by the torque limit function, the "Servo status: during torque limit"
flag remains ON.
3. Precautions for control
• If the zero return torque limit value exceeds the torque limit setting, an error occurs.
• If the torque limit function causes the operation to stop, drop pulses remain in the deviation counter. After
the load torque is removed, the operation continues according to the remaining pulses.
BFM Number
Data type
X-axis
Y-axis
START command
Operation command 1 BFM #518 b9
BFM #618 b9
Control data
Torque limit value setting
Torque limit value
BFM #14038
BFM #14238
Positioning parameters
Zero return torque
limit value
BFM #14040
BFM #14240
Positioning parameters
Torque output setting
value
BFM #510
BFM #610
Control data
Torque limit storing value
BFM #5,#4
BFM #105,#104
Monitor data
Positioning parameter
enable command
Operation command 2 BFM #519 b4
BFM #619 b4
Control data
During torque limit
*5
Servo status
BFM #64 b13
BFM #164 b13
Monitor data
Various operations
START command
Torque limit setting
(Positioning parameters)
Torque output setting
(Control data)
Stored torque limit
(Monitor data)
The torque limit setting or torque output setting becomes valid at the rising edge of the START
signal. If the torque output setting is "0," operation is made with the torque limit setting.
*1 .
*1
*1
*1
*2
If the positioning parameter setting is changed, issue a positioning control parameter command
to validate the new setting.
*2 .
When the torque output setting is changed during operation, the changed value is reflected in
operation and stored in the torque limit setting.
*3 .
When the torque output setting is changed during stop, the changed value is not reflected in
operation and is stored in the torque limit setting when the START command turns ON from
OFF.
*4 .
OFF
ON
ON
ON
300
300
0
0
150
100
200
200
200
150
100
250
250
*3
*3
*4