The Danfoss ICAD 600/900/1200 is an intelligent control actuator designed for precise regulation in various industrial applications, primarily for controlling Danfoss ICM motor-operated valves. This quick start guide provides essential information for initial setup, programming, and maintenance.
Function Description:
The ICAD actuator serves as the interface between a control system and a Danfoss ICM valve, translating electrical input signals into mechanical valve movement. It enables accurate positioning of the valve, facilitating precise control of fluid flow. The device supports both analog input signals (0/4-20 mA and 0/2-10V) and digital input for on/off control, making it versatile for different control strategies. It also provides digital output signals for common alarms, and indications of the ICM valve being fully open or fully closed, which can be integrated into a supervisory control system. The actuator is designed to operate with a 24 Volt d.c. power supply, which is a critical technical specification emphasized throughout the documentation. An uninterruptable power supply (UPS) or battery backup is recommended for the fail-safe supply to ensure continuous operation or a controlled shutdown in case of main power loss.
Important Technical Specifications:
- Power Supply: 24 Volt d.c. ONLY. This is a crucial requirement for the device's operation.
- Fail-safe Supply: Battery / UPS 19 V d.c. (minimum) for maintaining operation during power interruptions.
- Analog Input Signals:
- 0/4-20 mA Input (selectable, with 4-20 mA as the default factory setting).
- 0/2-10V Input (selectable).
- Digital Input: For on/off control.
- Digital Output Signals:
- Common Alarm (Black wire)
- ICM fully open (Brown wire)
- ICM fully closed (Red wire)
- GND ground (Orange wire)
- Compatibility: Designed for use with Danfoss ICM valves, specifically ICM 20, 25, 32, 40, 50, 65, 100, 125, and 150, corresponding to ICAD 600, 900, and 1200 models. The specific ICM valve size must be programmed into the ICAD.
- Operating Environment: The valve labels indicate an operating range of -60 to 120°C (-76 to 248°F) and a maximum working pressure (MWP) of 52 bar (754 psig), compatible with refrigerants such as HCFC, HFC, R744, and R717.
Usage Features:
- User Interface: The ICAD features a simple keypad with "Decrease value," "Edit / Enter," and "Increase value" buttons, along with a digital display to facilitate programming and monitoring.
- Programming Mode: The device enters programming mode by holding down the "Edit / Enter" button for 2 seconds. If no keypad operation occurs within 20 seconds, the device automatically exits programming mode to prevent unintended changes.
- Mandatory Valve Size Setup: Upon initial power-up, the display flashes "A1," indicating the need for valve size setup. Users must select the correct ICM valve size (e.g., ICM 20, 25, 32, etc.) from a predefined list, which corresponds to the ICAD model. This step is critical for proper calibration and operation. The process involves navigating through parameters (e.g., 10, 11, 26) and selecting the appropriate valve ID. Once selected, the ICAD calibrates with the ICM valve.
- Optional Analog Input Signal Change: The ICAD allows users to change the analog input signal type (0-20 mA, 4-20 mA, 0-10V, or 2-10V) to match the control system's output. The default factory setting is 4-20 mA. This adjustment is made within the programming mode by accessing parameter 03.
- Alarm Indication: An "A3" alarm on the display indicates that the analog input signal is out of range, prompting the user to check the input signal source.
- Wiring Diagram: A clear wiring diagram is provided, detailing connections for power supply, fail-safe supply, analog inputs, and digital outputs. This ensures correct installation and integration into the control system. The terminal box is not supplied by Danfoss.
Maintenance Features:
- Factory Reset: In cases of misconfiguration or troubleshooting, the ICAD can be reset to its factory default settings. This procedure involves disconnecting power, pressing and holding the "Decrease value" and "Increase value" buttons simultaneously, reconnecting power, and then releasing the buttons. After a factory reset, the ICAD will flash "A1," indicating that the mandatory valve size setup needs to be performed again.
- Oil Filling: The quick start guide illustrates the process of filling oil into the actuator, indicating a "Push down" action and "Tighten CW" (clockwise) for securing. This suggests a hydraulic or electro-hydraulic mechanism that requires periodic oil maintenance or initial filling.
- Documentation: The guide refers to a more comprehensive "ICAD instruction" manual for further functions, programming possibilities, and factory settings, implying detailed maintenance and troubleshooting information is available.
In summary, the Danfoss ICAD 600/900/1200 is a robust, intelligent actuator designed for precise control of ICM valves in demanding industrial environments. Its user-friendly programming interface, versatile input/output options, and clear maintenance procedures make it an effective solution for fluid flow regulation. The strict adherence to a 24 Volt d.c. power supply and the mandatory valve size setup are key aspects for its correct and safe operation.
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