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Sigma II User's Manual
3.3.5
Wiring Main Circuit Terminal Blocks
Observe the following precautions when wiring main circuit terminal blocks.
• Remove the terminal block from the servo amplifier prior to wiring.
• Insert only one wire per terminal on the terminal block.
• Make sure that the core wire is not electrically shorted to adjacent core wires.
• Reconnect any wires that were accidentally pulled out.
Servo amplifiers with a capacity below 1.5kW will have connector-type terminal blocks
for main circuit terminals. Follow the procedure below when connecting to the terminal
block.
n
Connection Procedure
•
Strip the end of the wire, leaving the ends twisted together.
•
Open the wire insert opening of the terminal block (plug) with a tool using either of the
two procedures shown in Fig. A and Fig. B on the following page.
1. Fig. A:
Fig. B:
2. Figs A and B: Insert the wire end into the opening and then clamp it tightly by
CAUTION
!
0.31 to 0.35in. (8 to 9mm)
Use the provided lever to open the wire insert opening .
Using a commercially available 1/8in. (3.0 to 3.5mm) slotted
screwdriver, press down firmly on the screwdriver insert opening
to release the wire insert slot.
Fig. A
releasing either the lever or the screwdriver.
3-11
Chapter 3: Wiring
Fig. B
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