Mitsubishi Electric MELSERVO-J4 MR-J4 TM Instruction Manual page 86

3. SIGNALS AND WIRING
Device Symbol
Forward rotation LSP
stroke end
Reverse rotation LSN
stroke end
Proximity dog DOG
Proportional control PC
Gain switching CDP
Fully closed loop CLD
selection
Connector
pin No.
CN3-2 To start the operation, turn on LSP and LSN. Turn it off to bring the servo motor
to a slow stop and make it servo-locked.
CN3-12 (Note) Input device
LSP
1
0
1
0
Note. 0: Off
1: On
Setting [Pr. PD01] as follows turn the signals on automatically (always
connected) in the servo amplifier.
[Pr. PD01]
_ 4 _ _
_ 8 _ _
_ C _ _
When LSP or LSN turns off, [AL. 99 Stroke limit warning] occurs.
In the torque mode, this device cannot be used during normal operation. It can
be used during the magnetic pole detection in the linear servo motor control
mode and the DD motor control mode. Also, when the magnetic pole detection
in the torque mode is completed, this signal will be disabled.
CN3-19 Turning off DOG will detect a proximity dog. The polarity for dog detection can
be changed with [Pr. PT29].
[Pr. PT29]
_ _ _ 0
_ _ _ 1
Turn PC on to switch the speed amplifier from the proportional integral type to
the proportional type.
If the servo motor at a stop is rotated even one pulse due to any external factor,
it generates torque to compensate for a position shift. When the servo motor
shaft is to be locked mechanically after positioning completion (stop), switching
on the PC (Proportion control) upon positioning completion will suppress the
unnecessary torque generated to compensate for a position shift.
When the shaft is to be locked for a long time, switch on the PC (Proportion
control) at the same time to make the torque less than the rated one.
Do not use PC (Proportional control) in the torque mode. When PC
(Proportional control) is used in the torque mode, operation may be performed
at a speed exceeding the speed limit value.
Turn on CDP to use the values of [Pr. PB29] to [Pr. PB36] and [Pr. PB56] to [Pr.
PB60] as the load to motor inertia ratio and gain values.
This is used when the semi closed loop control/fully closed loop control
switching is enabled with [Pr. PE01].
Turn off CLD to select the semi closed loop control, and turn on CLD to select
the fully closed loop control.
3 - 21
Function and application
Operation
CCW CW
direction direction
LSN
Positive Negative
direction direction
1
1
0
0
Status
LSP LSN
Automatic
on
Automatic
on
Automatic Automatic
on on
Polarity for proximity dog
detection
Detection with off
Detection with on
I/O
division
DI-1
DI-1
DI-1
DI-1
DI-1