ABB / Baldor / Reliance ZD18H403-E AC Vector Controller

The ABB/Baldor/Reliance ZD18H403-E is a Series 18H AC Flux Vector Controller designed for precise motor control in demanding industrial applications. This controller utilizes advanced vector control algorithms and offers dynamic braking capabilities for enhanced performance. It is built with a forced air cooling system to ensure reliable operation under load and features a keypad operator interface for straightforward control. The ZD18H403-E is suitable for variable torque, constant torque, or constant horsepower applications, and is designed for new installations, replacements, and OEM applications. It is important to note that this product has been discontinued by the manufacturer.

### Technical Specifications

* **Model:** ZD18H403-E
* **Series:** 18H
* **Control Type:** AC Flux Vector
* **Input Voltage:** 460 VAC
* **Input Frequency:** 50/60 Hz
* **Input Phase:** 3-Phase
* **Horsepower Rating (Constant Torque):** 3 HP / 2.2 kW
* **Horsepower Rating (Variable Torque):** 5 HP / 3.7 kW
* **Output Current (Constant Torque):** 5.2 A / 5 A
* **Output Current (Variable Torque):** 10 A / 8.2 A
* **Output Frequency (Maximum):** 500 Hz / 500
* **Dynamic Braking:** Yes
* **Regenerative Braking:** No
* **DC Injunction Braking:** No
* **Operator Interface:** Keypad
* **Cooling Type:** Forced Air
* **Enclosure Type:** NEMA 1 (Standard); NEMA 4X Indoor
* **Ambient Temperature Range:** 0°C to 40°C (32°F to 104°F)
* **Agency Approvals:** UL Approved, CUL Approved
* **Washdown Duty:** Yes (NEMA 4x enclosure standard for some variants)

### Electrical Features

* **Adjustable Current Limit:** Yes
* **Over/Under Voltage Protection:** Yes
* **Line to Line Fault Protection:** Yes
* **Line to Ground Fault Protection:** Yes
* **Motor Overspeed Protection:** Yes
* **Motor Overload Protection:** Yes
* **Over-Temperature Protection:** Yes
* **Linear Heat Sink Thermal Sensor:** Yes
* **Isolated Control Circuitry:** Yes
* **Selectable Automatic Restart:** At momentary power loss
* **Manual Restart:** Yes

### Interfaces and Options

The ZD18H403-E supports a range of optional interfaces for expanded functionality:

* **Digital Display:** For fault conditions
* **RS232:** Optional
* **RS422/RS485:** Optional
* **Analog Relay Output:** Optional
* **DC Tach Interface:** Optional
* **High-Resolution Analog Input:** Optional
* **Isolated Encoder Input:** Optional
* **Isolated Input:** Optional
* **Master/Pulse/Follower:** Optional
* **Pneumatic In/Relay Out:** Optional
* **Resolver Input:** Optional
* **Macro Options:** Optional

### Physical Dimensions

* **Dimensions:** 12″ H x 7.7″ W x 7.1″ D
* **Weight:** 18.000 LB (Ship Weight) / 23.0 LB

### Compatibility and Application

* **Motor Compatibility:** Designed for AC Vector Duty motors
* **Load Types:** Suitable for variable torque, constant torque, and constant horsepower applications
* **Applications:** New installations, replacements, and OEM equipment
* **Environmental:** Suitable for frequent washdowns (NEMA 4x enclosure as standard on some models)

Why Choose Aumictech for the ABB / Baldor / Reliance ZD18H403-E AC Vector Controller?
At Aumictech, we specialize in sourcing and supplying high-performance industrial automation equipment. Whether you need precise motor control for demanding applications, robust and reliable operation, or comprehensive protection features, our team ensures the ABB/Baldor/Reliance ZD18H403-E AC Vector Controller delivers maximum performance for your application.