Chapter 6 Dedicated Options
6-14
6-3 Relay terminal block
Signals input/output from the CN3 connector on the front of the servo amplifier can be sent to the
terminal block. Connect the terminal block to the CN3 connector with an SH21 cable. This can also be
used with the servo amplifier MR-J2-CT Series for auxiliary axes.
Abbrev. Name Descriptions
CN3A Connector 3 input/output A
CN3B Connector 3 input/output B
CN3C Connector 3 input/output C
Connect from the CN3 connector with an SH21 cable. Common for
any connector, so each signal will pass through. Generally when
the CN3 control signal is being used, each signal can be output
from the relay terminal block by relaying through these connectors.
VDD Internal power supply output
This is the 24V power supply output in the amplifier. When using
an internal power supply, use relayed once through the COM
terminal.
COM Common power supply
Connect VDD when using the amplifier internal power supply.
Connect the + side of the external power supply when using an
external power supply.
EMG
External emergency stop
input
This is the input terminal for external emergency stops.
DOG (Near-point dog input) This is not used with the MDS-B-SVJ2.
MO1 Monitor output 1
This is the D/A output ch.1.
Measure the voltage across MO1-LG.
MO2 Monitor output 2
This is the D/A output ch.2.
Measure the voltage across MO2-LG.
PE Plate ground This has the same potential as the amplifier FG or cable shield.
SG 24V power supply ground This is the ground when using digital input/output.
MC Contactor control output This is the output terminal for contactor control.
MBR Motor brake control output This is the output terminal for motor brake control.
LG 5V power supply ground This is the ground when using D/A output.
< Outline dimension drawing >
MR-J2CN3TM
PE SG MC MBR
VDD COM EMG DOG
LG
MO1 MO2
LG
CN3A CN3B CN3C
100
88
41.5
3
75
37.5
2-ø5.3 (Installation hole) [Unit: mm]
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