Mitsubishi Electric MELSERVO MRJ2S-B, Instruction Manual

Page: 64 / 200

Connection Connection of servo amplifier
3 - 6
Interface explanations
Input signal
Output signals
Power supply
Connector Name Description
CN1A Connector for bus cable from preceding axis.
Used for connection with the controller or
preceding-axis servo amplifier.
CN1B
Connector for bus cable to next axis
Used for connection with the next-axis servo
amplifier or for connection of the termination
connector.
CN2
Encoder connector Used for connection with the servo motor encoder.
CN3
Communication connector
Used for connection with the personal computer.
Serves as an I/O signal connector when the
personal computer is not used.
Tab. 3-6: Description of interfaces CN1A, CN1B CN2 and CN3
Signal Symbol Pin-No. Description I/O
Forced stop
EM1 CN3-20
Turning off EM1 puts the servo motor in a forced
stop status, in which the servo is switched off and
the dynamic brake is operated to stop the servo
motor. Turn on EM1 in the forced stop status to
reset this status.
DI-1
Tab. 3-7: Input signal
Signal Symbol Pin-No. Description I/O
Electromagnetic brake
interlock
MBR CN3-13
With switched off signal “Servo ON” MBR-SG is
opened.
DO1
Encoder A-phase pulse
(Differential outputs)
LA
LAR
CN3-6
CN3-16
Outputs pulses per servo motor revolution set in
parameter No. 38. In forward rotation of the servo
motor, the encoder B-phase pulse lags the
encoder A-phase pulse by a phase angle of
π
/2.
DO2
Encoder B-phase pulse
(Differential outputs)
LB
LBR
CN3-7
CN3-17
Encoder Z-phase pulse
(Differential outputs)
LZ
LZR
CN3-8
CN3-18
The zero-phase signal of the encoder is output. DO2
Analog monitor 1
MO1 CN3-4
The data set for CH1 in parameter 22 are output
as analog via MO1-LG.
Analog
output
Analog monitor 2
MO2 CN3-14
The data set for CH2 in parameter 22 are output
as analog via MO1-LG.
Analog
output
Tab. 3-8: Output signals
Signal Symbol Pin-No. Description
24VDC output
VDD CN3-10
Internal voltage source output voltage at the terminals
VDD R SG: +24VDC ± 10 %. Output current: max.
80mA
SG CN3-3
Common for digital inputs
COM CN3-5
Common reference point for the digital inputs,
voltaically separated from terminal LG
Common for control signals
LG
CN3-1
CN3-11
Common for analog outputs MO1 and MO2
Shield
SD Plate
Connect the shield of signal cable here.
Tab. 3-9: Power supply