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ZKZ-4 type unit speed signal device
technical parameter
■ Fault alarm signal of the device: 1 way, the contact point is closed when the device is abnormal.
■ Analog output: 4 ~ 20 mA (corresponding to 0% Ne ~ 200% Ne)
■ Output contact capacity: 5A / 250VAC, 5A / 30VDC
■ Working environment: temperature 0-50℃ and humidity <85%
■ Overall dimensions: disc installed 484320134mm
■ Power supply: DC220V or AC220V / 50Hz, DC110V optional (determined upon ordering)
■ Power consumption: 50W
characteristic
■ ZKZ-4 type speed monitoring device set frequency meter, tachometer, speed relay, speed test instrument in one, is a multi-purpose speed monitoring instrument;
■ Speed measurement adopts the advanced measurement principle of the variable gate measurement cycle, which has the characteristics of high measurement accuracy and strong real-time performance;
■ The measurement and control accuracy of the device is only determined by the error and stability of the PLC crystal vibration;
■ The output of the rotation speed contact adopts the return differential locking mode to prevent the waveform distortion from causing the output misoperation. According to the operation needs of the power plant, a certain range of the 10 rotation speed outlet values can be conveniently adjusted on the site.
■ The device also has a standard 4 ~ 20 mA current output, which can be convenient to interface with the computer, and can be used as a part of the computer monitoring system of the whole hydropower plant.
■ The device also has the standard modbus-RTU protocol, which interfaces with the computer through RS485, and can be used as a part of the computer monitoring system of the whole hydropower plant.
