APPLICATIONS OF Σ-SERIES PRODUCTS
3.8.1 Wiring Instructions
136
3.8 Special Wiring
This section describes special wiring methods including the one for noise control. Always
refer to 3.8.1 Notes on Wiring and 3.8.2 Wiring for Noise Control, and refer to other
sections as necessary.
3.8.1 Wiring Instructions 136...............................................
3.8.2 Wiring for Noise Control 138..........................................
3.8.3 Using More Than One Servo Drive 143.................................
3.8.4 Using Regenerative Units 144.........................................
3.8.5 Using an Absolute Encoder 148.......................................
3.8.6 Extending an Encoder Cable 157......................................
3.8.7 Using SGDA Servopack with High Voltage Line 159......................
3.8.8 Connector Terminal Layouts 161......................................
3.8.1 Wiring Instructions
To ensure safe and stable operation, always refer to the following wiring instructions.
NOTE Always use the following cables for reference input and encoder wiring.
Cable Type Yaskawa Drawing No.
Maximum
Allowable
Length
For reference
input
Twisted-pair
cables
DE9404859 3 m (9.8 ft.)
For encoder
Multiconductor
shielded
twisted-pair cable
B9400064 (for incremental
encoder)
DP8409123 (for absolute
encoder)
20 m (65.6 ft.)
• Trim off the excess portion of the cable to minimize the cable length.
NOTE
For a ground wire, use as thick a cable as possible.
• At least class 3 grounding (ground to 100 Ω or
less) is recommended.
• Always use one-line grounding.
• If the motor is insulated from the machine, ground the motor directly.
NOTE
Do not bend or apply tension to cables.
• Since the conductor of a signal cable is very thin (0.2 to 0.3 mm), handle it with ade-
quate care.
3
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