Input Power Supply Circuit - Mitsubishi Electric MELSERVO-J2-Super Series Supplementary Instructions Manual

2. MR-J2S- A4 SERVO AMPLIFIER

2.5.2 Input power supply circuit

WARNING
CAUTION
Insulate the connections of the power supply terminals to prevent an electric
shock.
Always connect a magnetic contactor (MC) between the main circuit power supply
and L , L , and L of the servo amplifier, and configure the wiring to be able to shut
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down the power supply on the side of the servo amplifier's power supply. If a
magnetic contactor (MC) is not connected, continuous flow of a large current may
cause a fire when the servo amplifier malfunctions.
Use the trouble (ALM) to switch power off. Otherwise, a regenerative transistor
fault or the like may overheat the regenerative resistor, causing a fire.
Connect the wires to the correct phase terminals (U, V, W) of the servo amplifier
and servo motor. Otherwise, the servo motor will operate improperly.
Do not connect AC power supply directly to the servo motor. Otherwise, a fault
may occur.
POINT
Do not apply the test lead bars or like of a tester directly to the pins of the
connectors supplied with the servo motor. Doing so will deform the pins,
causing poor contact.
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