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3.3 Wiring Guidelines
3.3.1 Power Cables
Supply power cable must be connected to TM1 terminal block, terminals L1(L), L2, L3(N).
L1(L) and L3(N) for single phase 230V supply.
Motor cable must be connected to TM1 terminals. T1, T2, T3.
Warning:- Connection of supply line cable to terminals T1,T2, T3 will result in serious damage to the drive
components.
Example power connections: Inverter with dedicated power line.
Inverter IM
Power
MCCB
Install a Supply RFI filter or Isolation transformer when the power source is shared with other high power
electrical equipment as shown below.
Inverter IM
Machine
Insulation transformer
Power
MCCB
3.3.2 Control Cable selection and Wiring
Control cables should be connected to terminal block TM2.
Choose power & Control cables according to the following criteria:-
Use copper wires with correct diameter and temperature rating of 65/70°C.
Minimum cable voltage rating for 200V type inverters should be 300VAC. Minimum cable voltage rating for
400V type inverters should be 600VAC.
Route all cables away from other high voltage or high current power lines to reduce interference effects.
Use a twisted pair shielded cable and connect the shield (screen) wire to the ground terminal at the
inverter end only. Cable length should not exceed 50 meters.
Shielding sheath
Protective covering
Connect the shield to
Inverter ground terminal
Do not connect this end
Inverter IM
Machine
RFI
Filter
Power
MCCB
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