Wiring Procedure For The Main Circuit Terminal Block; Wiring The Main Circuit Terminal Block Using Procedure A - YASKAWA GA700 Technical Manual

2.13 Wiring Procedure for the Main Circuit Terminal Block

2.13

Wiring Procedure for the Main Circuit Terminal Block

DANGER! Electrical Shock Hazard. Do not perform inspections or wiring while the drive is energized. De-energize all devices
before carrying out any wiring or repair operations. Voltage will remain within the capacitors inside the drive even after the
power has been switched off. The Charge LED is extinguished once the DC bus voltage goes below 50 V DC. To prevent
electric shock, always wait for at least the amount of time indicated on the warning labels and confirm that all indicators are
OFF. Then, remove the front cover and terminal cover, measure the input power supply voltage and the DC bus voltage, and
make sure that the voltages have been lowered to safe levels. Failure to comply may result in death or serious injury.
The procedure for wiring the main circuit terminal block differs depending on the drive model. Refer to
2.16 for details.
Table 2.16 Types of Wiring Procedure for the Main Circuit Terminal Block
◆

Wiring the Main Circuit Terminal Block Using Procedure A

Wire the main circuit terminal block correctly in accordance with the instructions in the manual.
Read the following instructions before wiring the terminal block.
■
Notes on Wiring the Main Circuit Terminal Block
Note:
• Use copper wire. Non-copper wire such as aluminum wire cannot be used.
• Be sure remove any foreign objects on the wire connections for the terminal block.
• Remove the insulator from the connection wires to the wire stripping lengths listed in the manual.
• Do not use a wire with bent or crushed conductor. If a deformed wire is used for connection, cut off the bent end of the wire before
using it.
• When using stranded wire, do not solder the conductor portion.
• When stranded wire is used, wire it so that no wire fibers protrude out of the connection. Do not excessively twist the stranded wire.
• Insert the wire until it is completely inside the terminal block. Once the insulator from the wire is removed to the suggested wire
stripping length, the insulator will fit within the plastic housing.
• The tightening torque is different for each terminal. Tighten the screws to the specified tightening torque.
• Use a torque driver, torque ratchet or torque wrench that is designed for the screws. A flat end driver or a hex tool will be needed when
wiring the screw clamp terminal. Refer to the recommended conditions listed in the product manual and provide tools accordingly.
• When using an electric driver to tighten, be especially careful and tighten at low speed, 300 to 400 r/min.
• Wiring tools can be purchased from Yaskawa. Contact Yaskawa or your nearest sales representative for details.
• When replacing your existing drive with this one, the existing wires may have wire gauges that are out of range of some of the gauges
applicable to the new drive. For the usable and unusable wire gauges, contact Yaskawa or your nearest sales representative.
• After connecting the wires, gently pull on the wires to check that they do not pull out.
• Cut off an appropriate section of the wiring cover to facilitate the wiring.
• Regularly tighten any loose terminal block screws to their specified tightening torques.
• To protect the wiring connections from strain forces, be sure to secure wires near wiring parts using some sort of strain relief system.
Refer to the following diagram.
A - Strain relief
68
Model
2004 - 2056
4002 - 4038
2070 - 2211
4044 - 4168
2257 - 2415
4208 - 4675
Figure 2.37 Wiring Example Using Strain Relief
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Table
Procedure
Procedure A
Preparing
Preparing