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CJ1W-CIF11 RS-422A Converter Appendix G
Wiring the RS-422A/485 Terminal Block
• Use either two-wire or four-wire shielded cable.
Recommended cable: CO-HC-ESV-3P
×7/0.2 (Hirakawa Hewtech)
• Connect the shield wire at both ends of the cable carrying RS-422A/485 signals to ground, and ground the
ground terminal on the Power Supply Unit of the CPU or Expansion Rack to 100
Ω max.
1. Taking care not to damage the shield, strip between 30 and 80 mm of sheath off the end of the cable.
2. Carefully twist the shield mesh together to form a single wire, and carefully cut off the material surrounding
the signal wires and any unnecessary signal wires.
3. Strip the sheath off the signal wires to a length sufficient to attach crimp terminals. Apply vinyl tape or heat–
shrinking tube to the sheathes and stripped parts of communications lines.
4. Attach sticktype crimp terminals to ends of the signal lines and crimp them using a crimp tool.
• Recommend crimp terminals:
Phoenix Contact
AI Series
AI-0.5-8WH-B (serial number: 3201369)
• Recommended crimp tool:
Phoenix Contact ZA3
With four-wire cables, insert two signal lines into each crimp terminal together before crimping.
• Recommend crimp terminals:
Phoenix Contact
AI Series
AI-TWIN2
×0.5-8WH (serial number: 3200933)
• Recommended crimp tool:
Phoenix Contact
UD6 (serial number: 1204436)
5. Connect the signal lines and the shield line to the RS-422A/485 terminal block.
30 to 80 mm
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