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◆ Power Supply Terminal Block TB1 Wiring
Power Supply Terminal Block TB1 Wiring Procedure
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1.
Select an external power supply.
When the 24 V Control Power Supply Unit is first switched on, two times the normal current will flow through the
unit for approximately 0.5 seconds. The unit requires at least 3 A to function properly.
WARNING! Electrical Shock Hazard. Use a battery or a double-reinforced UL Class 2 power supply to provide power to the 24 V
Control Power Supply Unit. Using a different type of power supply may result in death or serious injury by electrical shock or fire.
NOTICE: Do not install multiple 24 V Control Power Supply Unit. Failure could cause erroneous operation or damage the drive.
2.
Use a flat-blade screwdriver to loosen the screws on the terminal block TB1, connect wiring to the 24, 0, and FE
terminals as shown in
Refer to
Table 3.32
precaution to ensure that each wire is properly connected and wire insulation is not accidentally pinched into
electrical terminals.
NOTICE: Be sure to properly connect an external 24 Vdc power source to the terminal block TB1. Refer to
Improper wiring practices could damage the 24 V Control Power Supply Unit due to incorrect terminal connections.
Figure 3.79
Preparing wire ends:
Pull back the shielding and lightly
twist the end with fingers, keeping
the ends from fraying.
WARNING! Fire Hazard. Tighten terminal screws to the specified tightening torque. Loose electrical connections could result in death
or serious injury by fire due to overheating. Tightening screws beyond the specified tightening torque may cause erroneous operation,
damage the terminal block, or cause a fire.
NOTICE: Heat shrink tubing or electrical tape may be required to ensure that cable shielding does not contact other wiring. Insufficient
insulation may cause a short circuit and damage the drive.
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Tools Required for Installation
A straight-edge screwdriver (blade depth: 0.4 mm, width: 2.5 mm) is required to install the unit and wire the option
terminal block.
Note: Tools required to prepare option cables for wiring are not listed in this manual.
Power Supply Terminal Block TB1 Functions
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Figure 3.80
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
Figure
3.78, then tighten the terminal screws to hold wiring in place.
to confirm that the proper tightening torque is applied to each terminal. Take particular
Screwdriver blade size
Blade depth of
0.4 mm or less
about 5.5 mm (7/32")
When not using
Blade width of
crimped insulated
2.5 mm or less
sleeves
Figure 3.78 Wire the Option Plug
Figure 3.79 Power Supply Terminal Block TB1
Table 3.28 Power Supply Terminal Block TB1 Functions
Terminal
24
0
FE
3.14 24 V Control Power Supply Unit Wiring
Function
+24 Vdc Input
0 V
Ground
Table 3.32
for details.
125
3
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