Danfoss 193B-1606 Control

The Danfoss 193B-1606 ARA639 is a high-precision proportional motor actuator designed for professional HVACR applications requiring exacting control over rotary mixing valves within the DN 15-50 range. Operating on a 24V AC/DC supply voltage, this unit is engineered for versatile integration, supporting 0..10V, 2..10V, 0..20mA, and 4..20mA control signals. A critical advantage for field technicians is the selectable running time, offering 90° rotation speeds of 15, 30, 60, or 120 seconds to match specific system dynamics. The integrated feedback signal provides real-time positioning data to the controller, ensuring high-loop stability and simplified troubleshooting. This actuator features positioning memory to maintain settings after power loss and advanced signal filtering to eliminate hunting in noisy environments. Its compact design is compatible with ESBE VRG and VRB valve series, as well as legacy MG and G valves, making it a reliable choice for both new installs and retrofits in hydronic heating and cooling systems.

Key Benefits

• Multi-Signal Compatibility: Supports a wide array of modulating control inputs (0-10V, 4-20mA) for seamless integration with modern building automation systems.
• Adjustable Operating Speeds: On-site flexibility with four selectable running times (15/30/60/120s) to optimize regulation based on valve size and application.
• Precision Feedback: Features a built-in analogue feedback signal for accurate monitoring and verifiable valve positioning.
• Reliable Recovery: Intelligent positioning memory ensures the actuator returns to the correct state without a calibration cycle after power interruptions.
• Manual Override: Equipped with a pull-and-turn knob for immediate manual operation during commissioning or emergency service.

Common Questions

Is this actuator compatible with older ESBE valves?
Yes, the 193B-1606 is backward compatible with discontinued MG and G series rotary valves using the provided adapter kits.

Can the direction of rotation be changed?
The direction of rotation (clockwise or counter-clockwise) is easily field-selected via internal jumper settings to suit the specific piping layout.

What happens to the valve position if signal interference occurs?
This model includes an internal signal filter that can be activated to reduce hunting and prevent erratic movement caused by electrical noise or signal fluctuations.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.