2 Wiring explanations Wiring Notes z According to electric (Page 16 / 102) Maxsine EP100 AC SERVO User Manual

Chapter 2 Wiring

2.1.2 Wiring explanations

Wiring Notes:

z According to electric wire specification, use the wiring materials.

z The control cable length should be less than 3 meters and the encoder cable length 20 meters.

z Check that the power supply and wiring of L1, L2, L3 and L1C, L2C terminals are correct. Please do not

connect to 380V power supply.

z The output terminals(U,V,W) must be connected with the servo motor connections(U,V,W) correspondently,

otherwise the servo motor will stop or over speed. However, by exchanging three-phase terminal cannot

cause the motor to reverse; this point is different from an asynchronous motor.

z Earthed wiring must be reliable with a single-point connection.

z Pay attention to the correct direction of freewheel diode which is connected with the relay at the output

terminal, otherwise can cause the output circuit breakdown.

z In order to protect the servo driver from noise interference that can cause malfunction, please use an

insulation transformer and noise filter on the power lines.

z Wiring the power lines (power supply line, main circuit lines, etc.) at a distance above 30cm from the

control signal wires, do not lay them in one conduit.

z Install a non-fuse circuit breaker that can shut off the external power supply immediately for in case of the

servo driver fault.

2.1.3 Electric wire specifications

Connect terminal

Main power supply

Control power supply

Servomotor

Ground

Control signals

Encoder signals

symbol

L1、L2、L3

L1C、L2C

U、V、W

Wire specification

1.5～2.5mm2

0.75～1.0mm2

1.5～2.5mm2

≥0.14mm2(AWG26), shielded

Must use a twisted pair wire cable for the encoder signal wiring. If the encoder signal cable is too long

(>20m), in which the encoder power supply can be insufficient, may use multi-wire or thick wire for the power

supply wiring.