Description of FFD-MT02A Fan Fault Detection Controller

一、Summary

The FFD-MT02A type controller is designed for detecting the heat dissipation fan. the opening temperature and fault current can be adjusted at will to achieve the purpose of adapting to different power motors. the key components of the circuit are all imported components to ensure reliable, stable and long-time operation of the circuit. the current sampling uses 24-bit high-precision AD devices. through careful wiring and high reliable programming, the product has a high cost-performance ratio in the industry.

Working principle： Through temperature detection and current detection to control the fan work and real-time detection of whether the fan is working properly, it has a strong ability to judge the blocking and open circuit faults.

二、Main technical indicators

1. input operating voltage: AC220V       

2. Maximum operating current :1000 mA

3. fault response time: s 3

4. detection current resolution: mA 1

5. resolution :1℃

 Permissible duration

6. full load :>1 hour

7. output: relay contact (open) AC250V/5A

8. temperature :-30-80℃

9. relative temperature :<RH90%

10.  Insulation :>100 MΩ(DC500V)

11． Pressure: AC2500V /1Min (2mA)

12. Installation mode: card gauge (arbitrary direction)

三、Connection method and terminal function

                                接线端子示意图

四、Debugging method

  1. hold down the "and "-" buttons at the same time after power on, wait for the digital tube to shine, release the button, that is, enter the parameter adjustment mode, the fault light lights up.

 2. press "SET" key to change the parameter state, adjust the value of the parameter according to the following table, and change the parameter state in each order.

 3. press the LED indicator and the digital tube display 888, press the "SET" key to exit the parameter adjustment mode and store the adjusted parameters。

4、电流及温度值显示切换：

 "SET" and" at the same time press can switch to display the current value of the current control cabinet fan operation (current display mode);

 At the same time, press SET" and - to display the ambient temperature in the current control cabinet (temperature display mode).

 Hold down the SET" key in current display mode to display the actual voltage input from the current controller and fan in the cabinet.

 Hold down the SET" key to display the external temperature value in temperature display mode

六、Precautions for use

1. the maximum load current of the controller is 1 A, it can not be used for a long time, nor can the output end be short-circuited.

2. product installation position should not be as close as possible to the heating electrical components, should be placed in the best place to reflect the temperature of the cabinet space.

3. make sure the wiring is correct and then electrified, otherwise the circuit will be permanently damaged. 

4. the product to avoid abnormal or damage.

5、Turn on the voltage output 3 seconds after reaching the set temperature, and turn off the output when less than 2 degrees of the set temperature.