YASKAWA SGM Series User Manual page 152

Control I/O Signal
Co Connector ecto
PG Signal Connector
Note Cable selection conditions: three cables per bundle at 40 _C ambient tempera-
ture with the rated current flowing.
8.3.2 Wiring Instructions
To ensure safe and stable operation, always refer to the following wiring instructions.
D For signal lines and PG feedback lines, use twisted-pair wires and multicore shielded twisted-
pair wires (Yaskawa Drawing No. B9400064 or DE8400093).
The maximum allowable wiring length is as follows: 50 m (164.04 ft) for I/O lines (at 24 V
power supply), 20 m (65.62ft) for PG feedback lines, and 50 m (164.04 ft) for MECHATRO-
LINK communication line. Cut off the excess portion of the cable to minimize the cable
length.
D For a ground wire, use as thick a cable as possible.
At least grounding to 100 Ω or less is recommended. Always ground to one point only.
If the motor is insulated from the machine, ground the motor directly.
D To prevent malfunction due to noise, take the following actions:
• Position the input reference device and noise filter as close to the SERVOPACK as pos-
sible.
• Always install a surge absorber circuit in the relay, solenoid and magnetic contactor coils.
• The distance between a power line (such as a power supply line or motor cable) and a sig-
nal line must be at least 30 cm (12 in). Do not put the power and signal lines in the same
duct or bundle them together.
• Do not share the power supply with an electric welder or electrical discharge machine.
When the SERVOPACK is placed near a high-frequency oscillator, install a noise filter
on the input side of the power supply line.
• The SERVOPACK uses high-speed switching elements, which may cause noise on signal
lines. To prevent this, always take the above actions.
1CN Cable
Applicable Cable
Finished Cable
Dimensions
2CN
Cable
Applicable Cable
Finished Cable
Dimensions
8 -9
8.3 Wiring Specifications
Use twisted-pair wires or shielded
twisted-pair wires.
AWG24,26,28,30
φ16.0 mm (φ0.63 in.) max.
Use Yaskawa cable.
Use shielded twisted-pair cable if a
Yaskawa cable is not used.
See 8.3.1 "Rated Current and Cable
Specification" for details.
Applicable cable sizes: AWG24, 26, 28, 30
2
Use AWG22 [(0.32 mm ) (0.0005 in
encoder power supply and FG lines.
2
Use AWG26 [(0.12 mm ) (0.0002 in
other signals. These connections permit
wiring distances up to 20 m (65.6 ft.).
φ11.6 mm (φ0.46 in.) max.
2
)] for
2
)] for
8