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DU500/DU600

DU500/DU600

On-off servo unit

The DU500 on-off servo unit converts a controller’s 4–20 mA output into an on-off servo conduction signal—ideal for tasks like modulating combustion furnaces or airflow dampers. Its companion, the DU600 manual unit, enables manual adjustment of that same output, allowing seamless switching between auto and manual modes—even during operation—with insulation from the main controller to resist noise, and is perfect for rapid temperature ramping, energy-saving output reduction, or fine-tuning variations in furnace operations.

Features

DU500 converts 4–20 mA controller output to on-off servo control
DU600 enables manual adjustment with auto/manual switching capability
Output in auto mode is electrically isolated from the controller for noise resilience
Supports quick manual interventions in temperature-critical processes
Remote operation possible via optional communication interface
Multiple control motors can be individually assigned outputs via higher-level communications
Compact, lightweight panel-mount design suitable for industrial control systems

Applications

Managing combustion furnace inputs and outputs
Controlling HVAC duct dampers or airflow mechanisms
Facilitating manual override for rapid system adjustments in heat processing
Enhancing energy-saving procedures during production breaks or load variance
Integrating into broader automation systems requiring remote control flexibility
Coordinating multiple actuator outputs in sync with advanced controllers

Technical Data

Parameter	DU500 Specification	DU600 Specification
Input Signal	4–20 mA DC	4–20 mA DC
Output Signal	On-off servo conduction (isolated)	On-off servo conduction (isolated), manual override
Input Resistance	Approx. 35 Ω	Approx. 35 Ω
Output Display	0–100%, 10-segment bar graph	0–100%, 10-segment bar graph
Power Supply	100–240 VAC	100–240 VAC
Power Consumption	~7 VA (100 VAC); ~10 VA (240 VAC)	~7 VA (100 VAC); ~10 VA (240 VAC)
Weight	Approx. 140–160 g	Approx. 140–160 g
Optional Interfaces	Communication interface for remote control	Communication interface for remote/manual switching

Tags: 4-20mA input, furnace control, industrial automation, manual override, manual unit, noise isolation, on-off servo, process control, servo control signal, signal converter

Tags:

signal converter, on-off servo, manual override, process control, 4-20mA input, servo control signal, industrial automation, manual unit, noise isolation, furnace control