A. Product Overview

The Autonics DPU34B-120D 3 Phase 120 A Digital Power Controller is designed to regulate the electrical power supplied to industrial heaters and other compatible loads.

The controller provides multiple power control methods and accepts several standard industrial control signals. This allows it to operate with temperature controllers, PLCs and other process automation equipment.

The DPU34B-120D also supports feedback control for applications requiring more stable voltage, current or power regulation.

Key Features

• Brand: Autonics

• Model: DPU34B-120D

• Series: DPU

• Product type: Digital power controller

• Number of phases: 3 phase

• Power supply: 440 V

• Rated current capacity: 120 A

• Power consumption: Maximum 60 W for control power

• Phase control

• Fixed cycle control

• ON OFF control

• Normal non-feedback control

• Static voltage feedback control

• Static current feedback control

• Static power feedback control

• Analog current input: 4 to 20 mA

• Analog current input: 0 to 20 mA

• Voltage input: 0 to 5 VDC

• Voltage input: 1 to 5 VDC

• Voltage input: 0 to 10 VDC

• Voltage pulse input: 0 or 12 VDC

• No-voltage ON OFF input

• RS485 communication input

• Manual internal adjustment

• External manual adjustment support

• R, S and T phase indicators

• Operation indicator

• Manual control indicator

• Digital input indicator

• Alarm indication

• Voltage and current indication

• Optional remote display unit

• Phase control output range: 0 to 98 percent

• Cycle and ON OFF control output range: 0 to 100 percent

• Operating temperature: Minus 10°C to 50°C

• Operating humidity: 5 to 90 percent RH

• Approximate unit weight: 11.5 kg

B. Working Principle

The Autonics DPU34B-120D digital power controller regulates how much electrical power is supplied to a three phase industrial load.

A temperature controller, PLC or other control device sends a command signal to the DPU34B-120D.

Depending on the required heating or process demand, the power controller adjusts the electrical output delivered to the load.

For example, a temperature controller can provide a 4 to 20 mA control signal.

At a lower control signal, the DPU34B-120D supplies less power to the connected heater.

As the control signal increases, the controller increases the power delivered to the load.

The DPU34B-120D supports several control methods.

Phase Control

Phase control regulates the portion of the AC waveform supplied to the load.

This provides smooth power regulation and is suitable for compatible resistive and inductive loads.

Fixed Cycle Control

Fixed cycle control switches complete AC cycles according to the required power percentage.

This method is suitable for compatible resistive heating loads.

ON OFF Control

The controller can also switch the load completely ON or OFF according to the control command.

Feedback Control

The DPU34B-120D supports feedback based regulation including:

• Static voltage control

• Static current control

• Static power control

Feedback control helps maintain more stable output when electrical supply or load conditions change.

C. Why Is the Autonics DPU34B-120D Used?

The Autonics DPU34B-120D is used when an industrial process requires precise and controlled delivery of electrical power to a three phase load.

1. Industrial Heater Control

The controller can regulate the amount of electrical power supplied to high capacity industrial heaters.

2. Precise Temperature Control

It can receive a control signal from a temperature controller and adjust heater power according to the process temperature requirement.

3. Three Phase Power Regulation

The DPU34B-120D is specifically designed for three phase applications requiring up to 120 A rated current capacity.

4. Furnace Heating Control

It can be used for compatible heating elements in industrial furnaces and heat treatment equipment.

5. Industrial Oven Control

The controller can regulate heater power in drying, curing, baking and industrial oven applications.

6. Voltage Feedback Control

Static voltage feedback can help maintain stable output voltage under changing operating conditions.

7. Current Feedback Control

Static current feedback helps regulate the current delivered to the load.

8. Power Feedback Control

Static power feedback can help maintain consistent electrical power even when load conditions change.

9. Multiple Control Signals

The controller accepts several industrial control signals, including:

• 4 to 20 mA

• 0 to 20 mA

• 0 to 5 VDC

• 1 to 5 VDC

• 0 to 10 VDC

• Voltage pulse

• ON OFF contact

• RS485 communication

10. PLC Integration

The controller can be incorporated into industrial automation systems using compatible analog signals, digital signals or RS485 communication.

11. Manual Control

Manual adjustment is available for applications requiring local output control or commissioning.

12. Process Monitoring

Phase, operating condition, alarm status, voltage and current information can be monitored through the controller indication system.

D. Suitable Buyers

The Autonics DPU34B-120D 3 Phase 120 A Digital Power Controller is suitable for:

• Industrial automation companies

• Industrial furnace manufacturers

• Oven manufacturers

• Heater manufacturers

• Heat treatment equipment manufacturers

• Control panel manufacturers

• OEM machine builders

• PLC system integrators

• Temperature control system manufacturers

• Process automation companies

• Plastic machinery manufacturers

• Extrusion machinery manufacturers

• Injection molding machinery manufacturers

• Drying equipment manufacturers

• Ceramic industries

• Glass manufacturing plants

• Metal processing companies

• Pharmaceutical machinery manufacturers

• Food processing machinery manufacturers

• Semiconductor equipment manufacturers

• Factory maintenance departments

• Electrical panel builders

• Industrial heating system manufacturers

• Process engineering companies

• Production plants

It is particularly relevant for buyers searching for a 120 A power controller, three phase digital power controller, 440 V power controller, industrial heater power controller, furnace power controller or Autonics DPU power controller.

FAQ

1. What is the Autonics DPU34B-120D?

The Autonics DPU34B-120D is a three phase digital power controller designed to regulate electrical power supplied to compatible industrial loads.

2. Is the DPU34B-120D a three phase power controller?

Yes. It is designed for three phase applications.

3. What is the rated current capacity?

The DPU34B-120D has a 120 A rated current capacity.

4. What is the power supply of the DPU34B-120D?

The specified power supply is 440 V.

5. What is the control power consumption?

The control power consumption is a maximum of approximately 60 W.

6. Does the DPU34B-120D support 4 to 20 mA input?

Yes. It supports 4 to 20 mA analog control input.

7. Does it support 0 to 10 VDC input?

Yes. 0 to 10 VDC is one of the supported automatic control input signals.

8. What other analog inputs are available?

The controller supports:

• 0 to 20 mA

• 0 to 5 VDC

• 1 to 5 VDC

• 0 to 10 VDC

9. Does it support ON OFF input?

Yes. A no-voltage ON OFF input is supported.