Yaskawa Matrix Converter - Manual (Page 66)

2
-32
‹ Wiring Terminal Blocks
Use no more than 100 meters of wiring for PG (encoder) signal lines, and keep them separate from power
lines.
Use shielded, twisted-pair cable for pulse inputs and pulse output monitor wires, and connect the shield to the
shield connection terminal.
„ Wire Gauges (Same for All Models)
Terminal wire gauges are shown in Table 2.14.
„ Straight Solderless Terminals for Control Circuit Terminals
Yaskawa recommends using straight solderless terminal on signal lines to simplify wiring and improve reli-
ability.
Refer to Straight Solderless Terminal Sizes for specifications.
„ Closed-Loop Connector Sizes and Tightening Torque
The closed-loop connectors and tightening torques for various wire gauges are shown in Table 2.15.
„ Wiring Method and Precautions
The wiring method is the same as the one used for straight solderless terminals. Refer to page 2-18. Observe
the following precautions when wiring:
• Separate the control signal lines for the PG Speed Control Card from main circuit lines and power lines.
• Connect the shield when connecting to a PG. The shield must be connected to prevent operational errors
caused by noise. Also, do not use any lines that are more than 100 m long. Refer to Fig 2.23 for details on
connecting the shield.
• Connect the shield to the shield terminal (E), but only if the MxC is not affected by noise from peripheral
devices.
• Do not solder the wire ends. Doing so may cause a contact fault.
• When not using straight solderless terminals, strip the wires to a length of approximately 5.5 mm.
Table 2.14 Wire Gauges
Terminal
Terminal
Screws
Wire Thickness (mm 2 ) Wire Type
Pulse generator power supply
Pulse input terminal
Pulse monitor output terminal
-
Stranded wire: 0.5 to 1.25
Single wire: 0.5 to 1.25
• Shielded, twisted-pair wire
• Shielded, polyethylene-covered, vinyl
sheath cable
(KPEV-S by Hitachi Electric Wire or
equivalent)
Shield connection terminal M3.5 0.5 to 2
Table 2.15 Closed Loop Connectors and Tightening Torques
Wire Thickness [mm
2
]
Terminal
Screws
Crimp Terminal Size Tightening Torque (N • m)
0.5
M3.5
1.25 - 3.5
0.8
0.75 1.25 - 3.5
1.25 1.25 - 3.5
2 2 - 3.5