Specifications

App - 33
Functions changed from those of A1SD75
Changed functions Descriptions
Software stroke limit function
1. The limit check of arc address is carried out only when a sub point
is designated. It is not carried out when a center point is
designated.
2. The software stroke limit check during speed control is carried out
in the following cases:
• When the software stroke limit is applied to the current feed
value using software stroke selection and the current feed value
is updated with the current feed value during speed control.
• When the software stroke limit is applied to the machine feed
value.
3. If an attempt is made to change the current value but the
designated address is out of the software stroke limit range, the
attempt is considered as an error and the current value is not
changed.
4. The conventional models feature three types of software stroke
limit error codes for upper limit and lower limit respectively. With
the QD75, errors for the software stroke upper limit are integrated
into error code 507, and errors for the lower limit are integrated
into error code 508. Error codes 509 to 512 were deleted.
Current value changing
M code function
1. An error occurs when the designated new current value is out of
the software stroke limit range.
2. An M code setting value is valid during the positioning data
current value changing instruction.
Acceleration/deceleration control
1. An error occurs when the command frequency value calculated
from the speed limit value exceeds the maximum command
frequency of the positioning module being used.
2. Only two-word type (1 to 8388608ms) can be used as the setting
value for the acceleration/deceleration time.
(The switch between 1-word type and 2-word type was deleted.)
Stop process and restart after stop
Positioning operation stop
1. "Peripheral side (emergency) stop" was deleted from the stop
causes of Stop group 2 sudden stop selection. "Test mode fault"
in the stop causes of Stop group 3 sudden stop selection was
changed to be in the stop causes of Stop group 2 sudden stop
selection.
2. "Stop (QD75 peripheral)" was added to the stop causes of Stop
group 3 sudden stop selection.
3. Error code 100 (Peripheral device stop during operation) was
deleted.
4. I/O reset was added to the stop causes of Stop group 2 sudden
stop selection.
A1SD75 QD75
OFF Normal(READY) Not READY/WDT error
READY signal (X0)
ON Not READY/WDT error Normal(READY)
Manual pulse generator operation
1. The No. of connectable manual pulse generators was changed
from 1 generator/1 axis to 1 generator/1 module.
2. The speed during manual pulse generator operation is limited with
"Speed limit value".
Axis operation status
"Step stopped" was changed to "Stopped" and "Step error
occurring" was changed to "Error occurring".
"In position control for position-speed switching control", "In speed
control for position-speed switching control", and "In absolute
position restoration" were added.
Continuous path control
A1SD75 : If the reference axis operates in the reverse direction,
the control is internally changed into the continuous
positioning control (restart after deceleration stop).
QD75 : Even if the reference axis operates in the reverse
direction with interpolation, the control remains as the
continuous path control.
(In single-axis operation, the operation is the same as that
of the A1SD75.)