3-3
3.3 Electrical Installation
3.3.1 Wiring guidelines
A. Tightening torque:
Required Screwdriver Torques are as listed below:
Tightening torque
Horsepower Power source Nominal torque for TM1 terminal
1/2 380-480V
0.59/0.08
(lbs-ft/kg-m)
13/15
(lbs-ft/kg-m)
3/5 380-480V
1.5/0.21
(lbs-ft/kg-m)
13/15
(lbs-ft/kg-m)
B. Power Cables
Power cables are connected to TM1 terminal block, terminals L1, L2, U, V, W, P1, BR.
Choose power cables according to the following criteria:
(1) Use copper wires only. Correct wire diameters should be based on ratings at 105
o
C.
(2) For rating voltage of wires , the minimum voltage of 480V class type is 600V.
(3) To ensure safety, the power cables should be locked with O-type terminals.
C. Control Cables
Control cables are connected toTM2 control terminal block.
Choose control cables according to the following criteria:
(1) Use copper wires only. Correct wire diameters should be based on ratings at 105
o
C.
(2) For rating voltage of wires, the minimum voltage of 480V class type is 600V.To avoid noise
interference, do not route power and control cables in the same conduit or trucking.
(3) Where possible use screened / shielded control cables to minimizes electromagnetic
interference. To avoid ground loops always earth the shield of control cables at one end only.
D. Nominal electrical specifications of the terminal Block TM1:
※Note: Nominal values of input and output signals (TM2) – follow the specifications of class 2
wiring.
Horsepower Power source Amps Volts
1/2/3/5 380-480V 20 600
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