Chapter 3: Wiring
Firmware – S1043
Revision: 2 (9/98)
50
© Saftronics, Inc.
§
Closed-Loop Connector Sizes and Tightening Torque
The closed-loop connectors and tightening torques for various wire sizes are shown in
Table 3.16.
Table 3.16
Closed-Loop Connectors and Tightening Torques
Wire Thickness
(mm
2
)
AWG Sizes
Terminal Screws
Crimp Terminal
Size (mm
2
)
Tightening Torque
(N · m)
0.5
20
1.25 to 3.5
0.75
18
1.25 to 3.5
1.25
16
1.25 to 3.5
2
14
M3.5
2 to 3.5
0.8
§
Wiring Method
Use the following procedure to connect wires to the terminal block:
1. Loosen the terminal screws with a thin-slot screwdriver.
2. Insert the wires from underneath the terminal block.
3. Tighten the terminal screws firmly.
Figure 3.31
Connecting Wires to Terminal Block
NOTE:
Wiring Precautions
1. Separate PG Speed Option Card control circuit wiring (Terminals TA1 and TA2) from main circuit wiring and other high-
power lines.
2. Use twisted-pair or shielded twisted-pair cables to connect the PG to prevent operating faults. Process cable ends as
shown in
Figure 3.32
. The maximum cable length is 100 meters (328 feet).
Figure 3.3
Processing the Ends of Twisted-pair Cables
3. Connect the shield to the ground terminal.
4. Do not solder the wires to the control circuit terminals. The wires may not contact well with the control circuit terminals
if the wires are soldered.
5. The end of each wire connected to the control circuit terminals must be stripped for approximately 5.5 mm (0.22
inches).
Connect to terminal
TA3 on the VG5.