Mitsubishi Electric MR-J4 B Series Instruction Manual page 366

APPENDIX
(4) Power supply
(a) This servo amplifier can be supplied from star-connected supply with earthed neutral point of
overvoltage category III set forth in EN 61800-5-1. However, when you use the neutral point of 400 V
system for single phase supply, a reinforced insulating transformer is required in the power input
section.
(b) The control circuit provides safe separation to the main circuit in the servo amplifier. For the interface
power supply, use an external 24 V DC power supply with reinforced insulation on I/O terminals.
(5) Grounding
(a) To prevent an electric shock, always connect the protective earth (PE) terminal (marked
servo amplifier to the protective earth (PE) of the cabinet.
(b) Do not connect two grounding cables to the same protective earth (PE) terminal. Always connect
cables to the terminals one-to-one.
(c) If using a leakage circuit breaker, always ground the protective earth (PE) terminal of the servo
amplifier to prevent an electric shock.
(6) Wiring
(a) The wires to be connected to the terminal block of the servo amplifier must have crimp terminals
provided with insulating tubes to prevent contact with adjacent terminals.
(b) Use the servo motor-side power connector which complies with EN. The EN compliant power
connector sets are available from us as options.
(c) The servo amplifier must be installed in the metal cabinet.
(7) Peripheral devices/options
(a) Use the molded case circuit breaker and magnetic contactor models which are EN-compliant
products given in the MR-J4 Series Servo Amplifier Instruction Manual. Use a leakage current
device (RCD) of type B as necessary. When it is not used, provide insulation between the servo
amplifier and other device by double insulation or reinforced insulation, or install a transformer
between the main power supply and the servo amplifier.
Refer to App. 5 (8) for molded case circuit breakers and fuses.
(b) The sizes of the wires given in the MR-J4 Series Servo Amplifier Instruction Manual meet the
following conditions. For use in any other conditions, follow table 6 and Annex D of EN 60204-1.
Ambient temperature: 40 C
Insulator: PVC (polyvinyl chloride)
Route the wires on wall surface or open cable tray.
(c) Use shielded wires for I/O power wires.
(d) Use EMC filters of HF3000A-UN series manufactured by Soshin Electric.
PE terminal PE
Crimp terminal
App. - 5
PE
PE terminal
Insulating tube
Wire
) of the