YASKAWA Z1000U Series Quick Start Manual page 41

A –Power Supply Terminal Block TB1
A –Power Supply Terminal Block TB1
n Power Supply Terminal Block TB1 Wiring
Power Supply Terminal Block TB1 Wiring Procedure
1.
Select an external power supply.
Two times the normal current will flow through the unit for approximately 0.5 seconds when the 24 V Control Power
Supply Unit is first switched on. 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 Units. 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
confirm that the proper tightening torque is applied to each terminal. Take particular precaution to ensure that each
wire is properly connected and wire insulation is not accidentally pinched into electrical terminals.
NOTICE: Properly connect an external 24 Vdc power source to terminal block TB1. Refer to
practices could damage the 24 V Control Power Supply Unit due to incorrect terminal connections.
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.
YASKAWA ELECTRIC TOEP C710636 11E Z1000U HVAC MATRIX Drive Quick Start Guide
A
Figure i.34 24 V Control Power Supply Unit Location
(Models 2P0248, 2W0248, 4P0216, 4W0216, 4P0240, and 4W0240)
A
Figure i.35 24 V Control Power Supply Unit Location
(Models 4P0302 to 4P0414 and 4W0302 to 4W0414)
Figure i.36, then tighten the terminal screws to hold wiring in place. Refer to
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 i.36 Wire the Option Plug
i.4 Electrical Installation
Table i.20
Table i.20 for details. Improper wiring
to
41