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MELSEC-Q
11 MANUAL CONTROL
Restricted items
A manual pulse generator is required to carry out manual pulse ge nerator
operation.
Precautions during operation
The following details must be understood before carrying out m anual pulse
generator operation.
(1) The speed during manual pulse generator operation is not limited b y the
"Pr.8 Speed limit value".
(2) If the " Cd.21 Manual pulse genera tor enable flag" is turned ON while the
QD75 is BUSY (BUSY signal ON), a warning will occur (warning c ode 100:
start during operation).
(3) If a stop factor occurs during manual pulse generator operation, the operation
will stop, and the BUSY signal will turn OFF.
At this time, the " Cd.21 Manual pulse generator enable flag" will be left ON,
but manual pulse generator operation will not be possible. To carr y out manual
pulse generator operation again, measures must be carried out to elim inate
the stop factor. Once eliminated, the operation can be carried out again b y
turning the " Cd.21 Manual pulse generator enable flag" ON OFF ON.
(4) Pulses will not be output if an error occurs when the manual pulse gener ator
operation starts.
REMARK
One QD75 module can be connected to one m anual pulse generator.
The QD75 module can simultaneously output p ulses to the axis 1 to axis 4 drive
units by one manual pulse generator.
(1-axis to 4-axis simultaneous operation is possible.)
Errors during operation
When the operation is stopped by the stroke limit (limit signal O FF), manual pulse
generator operation can be performed in the direction in which the lim it signal turns
ON after an error reset. (An error will occur again if pulse input is provided in the
direction in which the limit signal turns OFF is turned ON.)
Upper/lower
limit signal
Manual pulse generator
operation possible Manual pulse generator
operation not possible
V
Manual pulse
generator operation
ON
OFF