Chapter 3 Ambient Environment and Installation
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
0.5/1 200-240V
1/ 2 380-480V
0.59/0.08
(LBS-FT / KG-M)
7.10/8.20
(LBS-IN/KG-CM)
2/3 200-240V
3/ 5/ 7.5/ 10/15 380-480V
1.5/0.21
(LBS-FT/KG-M)
18.00/20.28
(LBS-IN/KG-CM)
B. Power Cables
Power cables are connected to TM1 terminal block, terminals L1, L2, L3, T1, T2, T3, P, R.
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 200V class type is 300V, and 400 V class
type is 600V.
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 200V class type is 300V, and 400 V class type
is 600V.
(3) To avoid noise interference, do not route power and control cables in the same conduit or trucking.
(4) Where possible use screened / shielded control cables to minimizes electromagnetic
interference.
(5) 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
0.5/1/ 2 200-240V
1/ 2 380-480V
15
3/ 5/ 7.5/ 10/15 380-480V 40
600
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