Mitsubishi Electric MELSEC iQ-R Series User Manual page 179

Precautions during operation
The following details must be understood before carrying out manual pulse generator operation.
• If "[Pr.123] Manual pulse generator speed limit value" is set to a value larger than "[Pr.8] Speed limit value", the error
"Manual pulse generator speed limit value error" (error code: 1BBBH) will occur and the operation will not start.
• If "[Cd.21] Manual pulse generator enable flag" is turned ON while the Motion module is BUSY (BUSY signal ON), the
warning "Start during operation" (warning code: 0D00H) will occur.
• If a stop factor occurs during manual pulse generator operation, the operation will stop, and the BUSY signal will turn OFF.
At this time, "[Cd.21] Manual pulse generator enable flag" will remain ON. However, manual pulse generator operation will
not be possible. To carry out manual pulse generator operation again, measures must be carried out to eliminate the stop
factor. Once eliminated, the operation can be carried out again by turning "[Cd.21] Manual pulse generator enable flag" ON
 OFF  ON. (Note that this excludes hardware/software stroke limit error.)
• Command will not be output if an error occurs when the manual pulse generator operation starts.
The speed command is issued according to the input from the manual pulse generator irrelevant of the speed
limit setting. When the speed command is larger than 62914560 [pulse/s], the servo alarm "Command
frequency error" (alarm No.: 35) will occur.
The following calculation formula is used to judge whether or not a servo alarm will occur.
If a large value is set to the manual pulse generator 1 pulse input magnification, there is a high possibility of
the servo alarm "Command frequency error" (alarm No.: 35) occurrence. Note that the servo motor does not
work rapidly by rapid pulse input even if the servo alarm does not occur.
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Number of
input pulses
(Speed command) =
for one
second
• Connect a manual pulse generator to the high-speed counter module. One Motion module can be
connected to one manual pulse generator.
• The Motion module can simultaneously command to multiple servo amplifiers by one manual pulse
generator. (Axis 1 to the number of maximum control axes)
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Manual pulse Manual pulse
generator 1 generator 1
× ×
pulse input pulse movement
magnification amount
Number of pulses per rotation
×
Movement amount per rotation
5 MANUAL CONTROL
5.4 Manual Pulse Generator Operation
5
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