Mitsubishi Electric MR-JE-C, Instruction Manual

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2. SIGNALS AND WIRING
2 - 6
Note 1. To prevent an electric shock, be sure to connect the protective earth (PE) terminal (marked ) of the servo amplifier to the
protective earth (PE) of the cabinet.
2. Connect the diode in the correct direction. If it is connected reversely, the servo amplifier will malfunction and will not output
signals, disabling EM2 (Forced stop 2) and other protective circuits.
3. The forced stop switch (normally closed contact) must be installed.
4. Supply 24 V DC ± 10% to interfaces from outside. The total current capacity of these power supplies must be 300 mA or lower.
300 mA is the value applicable when all I/O signals are used. The current capacity can be decreased by reducing the number
of I/O points. Refer to section 3.9.2 (1) of "MR-JE-_C Servo Amplifier Instruction Manual" that gives the current value
necessary for the interface. The illustration of the 24 V DC power supply is divided between input signal and output signal for
convenience. However, they can be configured by one.
5. ALM (Malfunction) turns on in normal alarm-free condition (normally closed contact).
6. Use SW1DNC MRC2-_. (Refer to section 11.4 of “MR-JE-_C Servo Amplifier Instruction Manual”.)
7. Configure a circuit to turn off EM2 when the power is turned off to prevent an unexpected restart of the servo amplifier.
8. The assignments of CN3-14 pin, CN3-15 pin, CN3-16 pin, and CN3-22 pin can be changed with [Pr. PD29] to [Pr. PD32].
9. For communication function, refer to the "MR-JE-_C Servo Amplifier Instruction Manual (Network)”.
10. Modbus/TCP can be used with servo amplifiers with software version A3 or later. Modbus RTU can be used with servo
amplifiers with software version A4 or later.
11. Ethernet communication (CC-Link IE Field Network Basic, SLMP and Modbus/TCP) and RS-485 communication (Modbus
RTU) are exclusively independent functions. Only the communication function selected in [Pr. PN08] "Select communication
function" can be used.
12. If the servo amplifier to be connected is the last axis, terminate the servo amplifier with a 150 Ω resistor between DA and DB.
For wiring, refer to "MR-JE-_C Servo Amplifier Instruction Manual (Network)”.
2.2 Connectors and pin assignment
POINT
For the CN3 connector, securely connect the external conductor of the shielded
cable to the ground plate and fix it to the connector shell.
Screw
Screw
Ground plate
Cable