3.5 Control Circuit Wiring
96 YASKAWA SIEPC71061753C GA500 Technical Manual
Figure 3.41 Remove the Front Cover
2. Refer to the figure and wire the control circuit.
Use a slotted screwdriver with a blade width of 2.5 mm (0.1 in) or less and thickness of 0.4 mm (0.01 in) or
less.
WARNING! Fire Hazard. Tighten all terminal screws to the correct tightening torque. Connections that are too loose or
too tight can cause incorrect operation and damage to the drive. Incorrect connections can also cause death or
serious injury from fire.
Note:
• Use shielded, twisted-pair wires and ground the shield to the ground terminal of the drive. Incorrect equipment grounding
can cause drive or equipment malfunction from electrical interference.
• Do not use control circuit wiring that is longer than 50 m (164 ft) to supply the analog frequency reference from a remote
source. If the control circuit wiring is too long, it can cause unsatisfactory system performance.
A - Wire with a crimp ferrule attached, or
unsoldered wire with the core wires lightly
twisted
B - Pull back the shielding and lightly twist the end
with your fingers to keep the ends from fraying.
C - When you do not use crimp ferrules, remove
approximately 5.5 mm (0.21 in) of the covering
at the end of the wire.
Figure 3.42 Wiring Procedure for the Control Circuit
Note:
• It is easier to wire TB1-1 first, then TB1-2, then TB1-3.
• Do not solder the core wire. Soldered wiring connections can become loose and cause the drive to malfunction.
• Refer to Figure 3.43 for information to prepare terminal ends of the shielded wire.
• Prepare the wire ends of shielded twisted-pair wires as shown in Figure 3.43 to use an analog reference from an external
frequency setting potentiometer to set the frequency. Connect the shield to the ground terminal of the drive.
A - Connect the shield to the ground terminal of the
drive.
B - Sheath
C - Insulate with electrical tape or shrink tubing.
Figure 3.43 Prepare the Ends of Shielded Wire
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