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MITSUBISHI ELECTRIC MELSERVO MR-J2S- A User Manual

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(4) Power supply

(a) Operate the servo amplifier 7kW or less to meet the requirements of the overvoltage category II set

forth in IEC60664-1. For this purpose, a reinforced insulating transformer conforming to the IEC
or EN standard should be used in the power input section.
Since the 11kW or more servo amplifier can be used under the conditions of the overvoltage
category III set forth in IE60664-1, a reinforced insulating transformer is not required in the power
input section.

(b) When supplying interface power from external, use a 24VDC power supply which has been

insulation-reinforced in I/O.

(5) Grounding

(a) To prevent an electric shock, always connect the protective earth (PE) terminals (marked ) of the

servo amplifier to the protective earth (PE) of the control box.

(b) Do not connect two ground cables to the same protective earth (PE) terminal. Always connect the

cables to the terminals one-to-one.

PE terminals

PE terminals

(c) If a leakage current breaker is used to prevent an electric shock, the protective earth (PE) terminals

of the servo amplifier must be connected to the corresponding earth terminals.

(6) Wiring

(a) The cables to be connected to the terminal block of the servo amplifier must have crimping

terminals provided with insulating tubes to prevent contact with adjacent terminals.

Crimping terminal

Insulating tube

Cable

(b) Use the servo motor side power connector which complies with the EN Standard. The EN Standard

compliant power connector sets are available from us as options.