Mitsubishi Electric MR-JE-C, Instruction Manual

Page: 260 / 312

12. WHEN USING WITH A GENERAL-PURPOSE INTERFACE
12 - 45
12.4.14 Dogless Z-phase reference home position return type
A position, which is shifted to by the home position shift distance from a position specified by the Z-phase
pulse immediately after the start of the homing, is set as the home position.
(1) Device/parameter
Set input devices and parameters as follows:
Item Device/parameter to be used Setting
Homing mode selection MD0 (Operation mode selection 1) Switch on MD0.
DI0 (Point table No. selection 1) to DI7 (Point
table No. selection 8) Switch off DI0 to DI7.
Home position return
direction [Pr. PT45 Home position return types] Select the homing direction with [Pr. PT45]. The
setting is shown as follows:
Address increasing direction: -11
Address decreasing direction: -43
Home position return speed [Pr. PT05 Home position return speed] Set the rotation speed until the Z-phase is detected.
Creep speed [Pr. PT06 Creep speed] Set the rotation speed after the Z-phase is detected.
Home position shift distance [Pr. PT07 Home position shift distance], [Pr.
PT57 Home position shift distance (extension
parameter)] Set this to shift the home position, which is specified
by the Z-phase signal.
Acceleration time constant/
deceleration time constant of
homing [Pr. PT61 Home position return acceleration
time constant] or [Pr. PT62 Home position
return deceleration time constant] The acceleration/deceleration time constant of [Pr.
PT61] or [Pr. PT62] is used.
Set [Pr. PT60 Function selection T-8] to select the
parameters to be used.
Homing position data [Pr. PT08 Home position return position data],
[Pr. PT58 Home position return position data
(extension parameter)] Set the current position at the time of homing
completion.
(2) Timing chart
ON
OFF
MEND
(Travel completion)
ON
OFF
CPO
(Rough match) ON
OFF
Servo motor
speed
MD0
(Operation mode
selection 1)
Forward rotation
Reverse rotation
ON
OFF
Z-phase
ZP
(Home position return
completion)
ON
OFF
ON
OFF
ON
OFF
ST1
(Forward rotation start)
ST2
(Reverse rotation start)
3 ms or shorter
Deceleration time constant
5 ms or longer
Acceleration
time constant
Home position return position data
Home position return speed
Home position shift distance
Creep speed
0 r/min
The setting value of [Pr. PT08 Home position return position data] and [Pr. PT58 Home position return
position data (extension parameter)] is used as the position address at the homing completion.