Honeywell TAMR04 Actuator Control Module

General Description

The TAMR04 is part of Honeywell's TAMR series of actuator interface modules, used in commercial and industrial HVAC applications. It interfaces between a building management system (BMS) or controller and a modulating actuator (e.g., for air dampers or control valves). The module converts the analog command signal into a pulse-width modulated (PWM) or triac output to drive the actuator motor. It also provides a feedback signal to confirm position.

Key Features

• Control Input: 0-10 V DC (impedance 100 kΩ) or 4-20 mA (optional).

• Output to Actuator: 24 V AC/DC, max 3 A, suitable for synchronous or DC motors.

• Feedback Output: 0-10 V DC (proportional to actuator position).

• Manual Override: Built-in switch to manually open/close the actuator for commissioning.

• Diagnostics: LED indication for power, control signal, and fault (stall detection).

• Protection: Overload and short-circuit protection, auto-reset.

• Power Supply: 24 V AC/DC ±10%, 50/60 Hz.

Technical Specifications

• Control Signal Range: 0-10 V (adjustable start/end points via DIP switches).

• Feedback Accuracy: ±1% of full stroke.

• Operating Time: Selectable (30-150 s) via DIP switches.

• Ambient Temperature: -20°C to +50°C.

• Humidity: 5-95% RH (non-condensing).

• Dimensions: 105 x 80 x 60 mm.

• Enclosure: IP54 (wall mount).

Functional Description

The TAMR04 receives a low-voltage command from a controller (e.g., room thermostat or BMS). It compares the command with the feedback signal and drives the actuator towards the desired position. The integrated microcontroller ensures smooth movement and prevents hunting. The module features adjustable deadband and direction of rotation. The manual override allows service personnel to position the actuator without electrical signals. The fault LED indicates if the actuator is stalled or if there is a wiring problem.

Applications

• Control of air handling unit (AHU) dampers.

• Modulating control of hot/chilled water valves.

• VAV box control.

• Radiator and underfloor heating actuators.

Installation and Configuration

The module is mounted on a wall or inside a control panel using DIN rail or screws. Wiring terminals accept up to 2.5 mm² wires. Configuration is done via DIP switches for control signal type, operating time, and feedback direction. The module can be used with most 24 V AC/DC actuators, including Honeywell M7410, M7420, and similar.

Certifications

• CE marked, RoHS compliant.

• UL 873 listed.

• Designed to EMC directives (IEC 61000-6-1, IEC 61000-6-3).

Note: This document provides technical information; refer to the Honeywell TAMR04 installation instructions for detailed wiring and setup.