Mitsubishi Electric MELSERVO-J3 Series Manual page 9

(2) Configuration
The control circuit provide safe separation to the main circuit in the servo amplifier.
(3) Environment
Operate the servo amplifier at or above the contamination level 2 set forth in IEC60664-1. For this purpose,
install the servo amplifier in a control box which is protected against water, oil, carbon, dust, dirt, etc. (IP54).
(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 IEC60664-1. However, when using the neutral point of 400V class
for single-phase supply, a reinforced insulating transformer is 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
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 (marked
connect the cables to the terminals one-to-one.
(c) If a leakage current breaker is used to prevent an electric shock, the protective earth (PE) terminals
(marked ) of the servo amplifier must be connected to the corresponding earth terminals.
Control box
No-fuse
Magnetic
breaker
contactor
MC
NFB
PE terminals
A - 8
Reinforced
insulating type
24VDC
power
supply
Servo
motor
Servo
amplifier M
PE terminals
) of the
). Always