IMO HD2-3.7A-43 - Wiring Procedure of the Main Circuit Terminals

HD2 Series Inverter Installation Guidelines
-25-
Terminal
Terminal name
Function description
380V 37kW and
lower
380V
45–110kW
(inclusive)
380V 132kW and
higher
PE
Safety protection grounding terminal
Grounding terminal for safety
protection. Each inverter carries
two PE terminals and proper
grounding is required.
Note:
⚫ Do not use asymmetrical motor cables. If there is a symmetrical grounding conductor in the
motor cable besides the conductive shielded layer, ground the grounding conductor on the
inverter end and motor end.
⚫ Braking resistor, braking unit and DC reactor are optional parts.
⚫ Route the motor cable, input power cable and control cables separately.
⚫ "Not available" means this terminal is not provided for external connection.
⚫ HD2 series inverters cannot share the DC bus with CH series inverters.
⚫ When sharing the DC bus, the inverters must be the same in power and must be
simultaneously powered on or off.
⚫ In shared DC bus running mode, current balance on the inverter input side must be considered
during wiring, and equalizing reactors are recommended to be configured.
4.3.4 Wiring procedure of the main circuit terminals
1. Connect the grounding line of the input power cable to the grounding terminal (PE) of the
inverter, and connect the 3PH input cable to R, S and T terminals and tighten up.
2. Connect the grounding line of the motor cable to the grounding terminal of the inverter, and
connect 3PH motor cable to U, V and W terminals and tighten up.
3. Connect the braking resistor which carries cables to the designated position.
4. Fix all the cables outside the inverter mechanically if allowed.
The screw is
not fastened.
The screw is
fastened.
YNG
Figure 4-14 Screw installation diagram