Encoder Cable Fabrication Method - Fuji Electric Alpha7 VV User Manual

2.4.2 Encoder Cable Fabrication Method

To fabricate the encoder cable by yourself, take care of the following.
 Do not install a relaying terminal block between the servo amplifier and motor.
 Use a shielded cable.
 Connect the shielded cable with the designated connector pin, connector shell or cable clamp on
both sides.
The servo amplifier communicates with the encoder built in the servomotor through high speed
serial communications.
The shield treatment is important for the assurance of reliability of serial communications.
The maximum encoder wiring length is 50m.
 In case of twisted wire, please conduct according to the signal combination below:
P5 and M5, SIG+ and SIG-, BAT+ and BAT- (See "Connection diagram (example)" in section 2.1.2.)
 Wrong wiring may cause encoder or battery trouble, please be careful.
Perform shield treatment at the encoder according to the procedure specified below.
Despite motor capacity, wiring treatment at the servo amplifier is the same.
2.4.2.1 Encoder cable fabrication method
GYS model 0.75kW or less/GYB model lead wire specification
Servo amplifier side
GYB model connector connection specification
Servo amplifier side
There is no need to connect the shielded end of
the connector at the motor side.
[1] Peel off approximately 22 mm of the end of
the shielded wire.
Fold back the shield.
Wind copper foil tape two to three times around the shield.
Connect the shielded end of the connector at the motor side to pin No. 3.
Relay the shielded wire with a lead wire of AWG #22 to #26,
and then crimp it to the connector pin.
Motor side
Motor side
CHAPTER 2 WIRING
2-23
Encoder
2