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3. SIGNALS AND WIRING
3.8 Connection of servo amplifier and servo motor
3.8.1 Connection instructions
WARNING Insulate the connections of the po wer supply terminals to prevent an el ectric
shock.
CAUTION
Connect the wires to the correct phase terminals (U, V, W) of the ser vo amplifier
and servo motor. Otherwise, the serv o motor will operate improperly.
Do not connect AC power supply directl y to the servo motor. Other wise, a fault
may occur.
POINT
Do not apply the test lead bars or like of a tester dire ctly to the pins of the
connectors supplied with the servo motor. Doing so will deform the pins,
causing poor contact.
The connection method differs according to the series and capacity of the servo motor and whether or not
the servo motor has the electromagnetic brake. Perform wiring in accordance with this section.
(1) For grounding, connect the earth cable of the servo motor to the protective earth (PE) terminal of the
servo amplifier and connect the ground cable of the servo amplifier to the earth via the protective
earth of the control box. Do not connect them directly to the protective earth of the control panel.
Servo
amplifier Servo motor
PE terminal
Control box
(2) Do not share the 24VDC interface power supply between the interface and electromagnetic brake.
Always use the power supply designed exclusively for the electromagnetic brake.
3.8.2 Connection diagram
The following table lists wiring metho ds accord ing to the serv o moto r type s. Use the con nection diag ram
which conforms to the servo motor used. For cables required for wiring, refer to Section 13.2.1. For
encoder cable connection, refer to Section 13.1.5. For the signal layouts of the connectors, refer to Section
3.8.3.
For the servo motor connector, refer to Chapter 3 of the Servo Motor Instruction Manual.
POINT
For the connection diagram of the MR-J2S-11KA to MR-J2S-22KA, refer
to Section 3.13 where the connection diagram is sho wn together with the
power line circuit.