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3. SIGNALS AND WIRING
Device Symbol
Connec-
tor pin
No.
Functions/Applications
I/O
division
Control
mode
P S T
Zero speed
detection
ZSP 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
ON
0r/min
1)
2)
4)
Forward
rotation
direction
Servo motor
speed
Reverse
rotation
direction
Zero speed
detection
(ZSP)
ON level
50r/min
OFF level
70r/min
ON level
50r/min
OFF level
70r/min
Parameter
No. PC17
20r/min
(Hysteresis width)
20r/min
(Hysteresis width)
Parameter
No. PC17
3)
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.
DO-1
Electromagnetic
brake interlock
MBR 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.
DO-1
Warning WNG 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.
DO-1
Battery warning BWNG 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 disconnection 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.
DO-1