Mitsubishi Electric Melservo MR-J3-A Instruction Manual page 86

3. SIGNALS AND WIRING
Device Symbol
Zero speed ZSP
Electromagnetic MBR
brake interlock
Warning WNG
Battery warning BWNG
Connec-
tor pin
No.
CN1-23 ZSP turns on when the servo motor speed is zero speed (50r/min) or
less. Zero speed can be changed using parameter No. PC17.
Example
Zero speed is 50r/min
OFF level
Forward
70r/min
rotation
ON level
direction
50r/min
Servo motor
0r/min
speed
ON level
Reverse
50r/min
rotation
OFF level
direction
70r/min
zero speed
ON
(ZSP)
OFF
ZSP turns on 1) when the servo motor is decelerated to 50r/min, and
ZSP turns off 2) when the servo motor is accelerated to 70r/min
again.
ZSP turns on 3) when the servo motor is decelerated again to
50r/min, and turns off 4) when the servo motor speed has reached -
70r/min.
The range from the point when the servo motor speed has reached
ON level, and ZSP turns on, to the point when it is accelerated again
and has reached OFF level is called hysteresis width.
Hysteresis width is 20r/min for the MR-J3-A servo amplifier.
Set the parameter No. PD13 to PD16/PD18 or parameter No. PA04
to make this signal usable. Note that ZSP will be unusable.
MBR turns off when the servo is switched off or an alarm occurs.
To use this signal, assign the connector pin for output using
parameter No. PD13 to PD16, PD18. The old signal before
assignment will be unusable.
When warning has occurred, WNG turns on. When there is no
warning, WNG turns off within about 1.5s after power-on.
To use this signal, assign the connector pin for output using
parameter No. PD13 to PD16, PD18. The old signal before
assignment will be unusable.
BWNG turns on when battery cable breakage warning (AL. 92) or
battery warning (AL. 9F) has occurred.
When there is no battery warning, BWNG turns off within about 1.5s
after power-on.
Functions/Applications
1)
3)
2)
4)
3 - 33
I/O
division
DO-1
20r/min
(Hysteresis width)
Parameter
No. PC17
Parameter
No. PC17
20r/min
(Hysteresis width)
DO-1
DO-1
DO-1
Control
mode
P S T