Mitsubishi Electric MELSERVO-J4 series, Instruction Manual

Page: 109 / 646

3 SIGNALS AND WIRING
3.5 Signal (device) explanations
107
3
Output device
Output device pin
The following shows the output device pins and parameters for assigning devices.
Output device explanations
Connector pin No. Parameter Initial device I/O division
CN3-13 [Pr. PD07] MBR DO-1
CN3-9 [Pr. PD08] INP
CN3-15 [Pr. PD09] ALM
Device Symbol Function and application
Electromagnetic brake
interlock MBR When using the device, set operation delay time of the electromagnetic brake in [Pr. PC02].
When a servo-off status or alarm occurs, MBR will turn off.
Malfunction ALM When the protective circuit is activated to shut off the base circuit, ALM will turn off.
When an alarm does not occur, ALM will turn on after 2.5 s to 3.5 s after power-on.
In-position INP When the number of droop pulses is in the in-position range, INP will turn on. The in-position range can be
changed using [Pr. PA10]. When the in-position range is increased, INP may be on during low-speed rotation.
The device cannot be used in the velocity mode and torque mode.
Dynamic brake interlock DB When using the signal, enable it by the setting of [Pr. PD07] to [Pr. PD09].
DB turns off when the dynamic brake needs to operate. When using the external dynamic brake on the servo
amplifier of 11 kW or more, this device is required.

Page 435 External dynamic brake
For the servo amplifier of 7 kW or less, it is not necessary to use this device.
The external dynamic brake cannot be used with 11 kW or more servo amplifier for compliance with SEMI-F47
standard. Do not assign DB (Dynamic brake interlock) in [Pr. PD07] to [Pr. PD09]. Failure to do so will cause the
servo amplifier to become servo-off when an instantaneous power failure occurs.
Ready RD Enabling servo-on to make the servo amplifier ready to operate will turn on RD.
Speed reached SA SA will turn off during servo-off. When the servo motor speed reaches the following range, SA will turn on.
Set speed

((Set speed

0.05) + 20) r/min
When the preset speed is 20 r/min or less, SA always turns on.
The device cannot be used in the position mode and torque mode.
Limiting speed VLC When the speed reaches the speed limit value in the torque mode, VLC will turn on. When the servo is off, VLC
will be turned off.
The device cannot be used in the position mode and velocity mode.
Zero speed detection ZSP ZSP turns on when the servo motor speed is zero speed (50 r/min) or less. Zero speed can be changed with [Pr.
PC07].
ZSP will turn on when the servo motor is decelerated to 50 r/min (at 1)), and will turn off when the servo motor is
accelerated to 70 r/min again (at 2)).
ZSP will turn on when the servo motor is decelerated again to 50 r/min (at 3)), and will turn off when the servo
motor speed has reached -70 r/min (at 4)).
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 20 r/min for this servo amplifier.
When you use a linear servo motor, [r/min] explained above will be [mm/s].
Limiting torque TLC When the torque reaches the torque limit value during torque generation, TLC will turn on. When the servo is off,
TLC will be turned off.
This device cannot be used in the torque mode.
OFF
ON
Servo motor
speed
20 r/min
(Hysteresis width)
[Pr. PC07]
20 r/min
(Hysteresis width)
OFF level
-70 r/min
ON level
-50 r/min
ON level
50 r/min
OFF level
70 r/min
0 r/min
[Pr. PC07]
ZSP
(Zero speed
detection)
1)
3)
2)
4)
Forward
rotation
direction
Reverse
rotation
direction