Product Overview; What This Chapter Contains; Basic Principle - IMO HD2 IP Series Instruction Manual

HD2 IP55 High-ingress Protection Series inverter

3.1 What this chapter contains

This chapter mainly introduces the operation principles, product features, layouts, nameplates,
and model instructions.

3.2 Basic principle

The HD2 IP55 high-ingress protection series inverter is used to control asynchronous AC
induction motor and permanent-magnet synchronous motor. The figure below shows the
main circuit diagram of the inverter. The rectifier converts 3PH AC voltage into DC voltage,
and the capacitor bank of intermediate circuit stabilizes the DC voltage. The inverter converts
DC voltage into the AC voltage used by AC motor. When the circuit voltage exceeds the
maximum limit value, external brake resistor will be connected to intermediate circuit to
consume the feedback energy.
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Note:
1. HD2IP-38A-43 and above inverters are equipped with built-in DC reactors.
2. Built-in brake units are included in the standard configuration of HD2IP-75A-43 and below
models. The models that carry built-in brake units can also be connected to external brake
resistors. The brake resistors are optional parts.

3 Product Overview

Figure 3-1 (HD2IP-32A-43 and below) main circuit diagram
Figure 3-2 HD2IP-38A-43 and above, main circuit diagram
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Product Overview
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