SPECIFICATIONS AND FUNCTIONS
3.3.3 D75P2 auxiliary functions and common functions
Zero point return retry
Zero point shift function
Electronic gear function
Near pass mode function
Speed limit function
Torque limit function *
Software stroke limit
Hardware stroke limit
Speed change function
time change function
Torque change function
Absolute position restoration function*
To carry out "torque limit", the "D/A conversion module" and a "drive unit capable of the torque limit command with
an analog voltage" must be prepared.
The "drive unit that can configure an absolute position detection system (MR-H, MR-J2, MR-J2S)" is required to
perform "absolute position restoration".
The functions that assist positioning control using the D75P2 are described below.
(Refer to "SECTION 2" for details on each function.
This function retries the machine zero point return with the
upper/lower limit switches during machine zero point return.
This allows machine zero point return to be carried out even if
the axis is not returned to before the near-point dog with JOG
After returning to the machine zero point, this function
compensates the position by the designated distance from the
machine zero point position and sets that position as the zero
This function compensates the mechanical backlash. Feed
pulses equivalent to the set backlash amount are output each
time the movement direction changes.
By setting the movement amount per pulse, this function can
freely change the machine movement amount per commanded
When the movement amount per pulse is set, a flexible
positioning system that matches the machine system can be
This function suppresses the machine vibration when the
speed changes during continuous path control in the
If the command speed exceeds " Pr.7
during control, this function limits the commanded speed to
within the " Pr.7
If the torque generated by the servomotor exceeds " Pr.18
Torque limit setting value" during control, this function limits the
generated torque to within the " Pr.18 Torque limit setting
value" setting range.
If a command outside of the upper/lower limit stroke limit
setting range, set in the parameters, is issued, this function will
not execute positioning for that command.
This function carries out deceleration stop with the limit switch
connected to the D75P2 external device connection connector.
This function changes the speed during positioning operation.
This function sets a new speed to "New speed value
(RWwm+4 to 5, RWwm+12 to 13)" and changes the speed at
the speed change request (RY(n+2)7, RY(n+4)7).
This function varies the speed during positioning operation at
the ratio of 1 to 300%. "Positioning operation speed override
(RWwm+1, RWwm+9)" is used to execute this function.
This function changes the acceleration/deceleration time during
This function changes the "torque limit value" during control.
This function restores the absolute position of the specified
Speed limit value" setting range.
3 - 10
Speed limit value"