3.4 Main Circuit Terminal Wiring Procedure
90
YASKAWA
SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
3.4
Main Circuit Terminal Wiring Procedure
DANGER!
Electrical Shock Hazard. Do not examine, connect, or disconnect wiring on an energized bypass. Before servicing,
disconnect all power to the equipment and wait for the time specified on the warning label at a minimum. The internal capacitor
stays charged after the bypass is de-energized. The charge indicator LED extinguishes when the DC bus voltage decreases below
50 Vdc. When all indicators are OFF, remove the covers before measuring for dangerous voltages to make sure that the bypass is
safe. If you do work on the bypass when it is energized, it will cause serious injury or death from electrical shock.
◆
Notes on Wiring the Main Circuit Terminal
Read these safety messages and notes before you wire the main circuit terminal.
WARNING!
Fire Hazard. Do not use bent or crushed wires. Remove the damaged end of the wire before you use it. Incorrect
connections can cause death or serious injury from fire.
WARNING!
Fire Hazard. If you use stranded wire, make sure that all of the wire strands are in the connection. Also, do not twist the
stranded wire too much. Incorrect connections can cause death or serious injury from fire.
NOTICE:
Do not solder stranded wire. Soldered wire connections can become loose over time and cause unsatisfactory drive
performance.
NOTICE:
If you use power tools to tighten the terminal screws, use a low speed setting (300 min
-1
(r/min) to 400 min
-1
(r/min)). High
speeds can cause damage to the terminal screws.
Note:
•
Use UL Listed vinyl-coated insulated copper wires for operation with a continuous maximum permitted temperature of 75 °C at 600 V.
•
Remove all unwanted objects that are near the terminal block connections.
•
Remove the insulation from the connection wires to the wire stripping lengths shown in the manual.
•
Put the wire all the way into the terminal block. Remove the insulation from the wire to the recommended wire stripping length to fit the
wire with insulation in the plastic housing.
•
Use a torque driver, torque ratchet, or torque wrench for the screws. A slotted driver or a hex tool will be necessary to wire the screw clamp
terminal. Use applicable tools as specified by the recommended conditions in the product manual.
•
Put the bit all the way into the hex socket to tighten the hex socket cap screw.
•
When tightening slotted screws, hold the straight-edge screwdriver perpendicularly to the screw. Take care to ensure that the tip of the
straight-edge screwdriver is aligned with the screw groove.
Figure 3.6 Tightening Slotted Screws
•
After connecting the wires to the terminal block, lightly pull on the wires to make sure that they do not come out of the terminals.
◆
Narrow Bypass Main Circuit Terminal Block Wiring Procedure
1.
Correctly ground the bypass terminal board.
2.
Route the main circuit wiring.
shows suggested wire entry and bending areas for the enclosure.
Содержание HV600
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