YASKAWA H6B1A002, Technical Reference

Page: 105 / 794

Electrical
Installation
3
3.6 Drive PCB Control Circuit
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference 105
Correctly ground the drive terminals and complete main circuit wiring before you wire the control circuit. Remove the
keypad and front cover.
1.
Refer to Figure 3.19 and wire the control circuit.
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 bypass. Incorrect connections can also cause death or serious
injury from fire.
Note:
• Use shielded wires and shielded twisted-pair wires for the control circuit terminal wiring. If the grounding is not correct, electrical
interference can cause the drive or devices around it to malfunction.
• Do not use control circuit wiring that is longer than 50 m (164 ft) to supply the frequency reference with an analog signal from a
remote source. Wiring that is too long can cause unsatisfactory system performance.
A - Loosen the screws and put the wire into the
opening on the terminal block.
B - Wire with a crimp ferrule attached, or use wire
that is not soldered with the core wires lightly
twisted.
C - Pull back the shielding and lightly twist the end
with your fingers to keep the ends from fraying.
D - If you do not use crimp ferrules, remove
approximately 5.5 mm (0.21 in) of the covering at
the end of the wire.
E - Blade width of 2.5 mm (0.1 in) or less
F - Blade depth of 0.4 mm (0.01 in) or less
Figure 3.19 Wiring Procedure for the Control Circuit
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 bypass. Incorrect connections can also cause death or serious
injury from fire.
NOTICE: Do not tin stranded wire with solder. Soldered wire connections can become loose over time and cause
unsatisfactory system performance.
Note:
• Refer to Figure 3.20 for information to prepare terminal ends of the shielded wire.
• Prepare the wire ends of shielded twisted-pair wires as shown in Figure 3.20 to use an analog reference from an external
frequency setting potentiometer to set the frequency. Connect the shield to terminal FE of the drive.
A - Connect the shield to terminal FE of the drive.
B - Sheath C - Insulate with electrical tape or shrink tubing.
Figure 3.20 Prepare the Ends of Shielded Wire
2.
Install the front cover to its initial position.