User`s manual

2-34
2
Cable Lug Connector Sizes and Tightening Torque
The lug sizes and tightening torques for various wire sizes are shown in Table 2.16.
Precautions
The wiring method is the same as the one used for straight solderless terminals. Refer to page 2-33. Observe
the following precautions when wiring.
• Separate the control signal lines for the PG Speed Control Card from main power lines and other control
circuits.
• 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.
• Connect the shield (green grounding cable of the option card) to the shield terminal (E).
• Do not solder the ends of wires. Doing so may cause contact faults.
• When not using straight solderless terminals, strip the wires to a length of approximately 5.5 mm
• A separate power supply is required if the PG power supply consumption is higher than 200 mA. (If
momentary power loss must be handled, use a backup capacitor or other method.)
• Make sure not to exceed the PG cards maximum input frequency. The output frequency of the pulse gener-
ator can be calculated using the following formula.
Table 2.16 Cable Lugs and Tightening Torque
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
f
PG
(Hz) =
Motor speed at maximum output frequency (min
–1
)
60
x PG rating (p/rev)