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ZKZ-5 redundant speed monitoring device

1、 Overview

Zkz-5 dual PLC redundant speed monitoring device is externally connected with speed pulse sensor and residual voltage signal to monitor the speed of water turbine generator unit in real time, and output switching value signal and analog value signal corresponding to unit speed at each speed point of the unit to serve automatic start-up, shutdown and power plant monitoring system.

2、 Technical parameters

Number of measuring signal channels: two channels of gear plate pulse signal and one channel of residual voltage.

Measurement frequency range: 0.05 ~ 100Hz

Measurement accuracy: nonlinearity < 1%, speed dead zone < 0.02%

Display contents: generator frequency, unit speed, speed percentage, output setting value of each circuit, rated speed (frequency) memory.

Display mode: 4 "LCD touch screen, led nixie tube

Switching value output signal: 12 speed value signals, each point can be set by the user within the set range.

Peristalsis monitoring signal: 1 channel, the contact is closed when the speed is 0.05% ~ 1% ne

Device fault alarm signal: 2 channels, one channel is the contact closed in case of abnormal fault of main control PLC, and the other channel is the contact closed in case of abnormal fault of device.

Analog output: 4 ~ 20mA (corresponding to unit speed 0% ne ~ 200% NE)

Output contact capacity: 1A / 250VAC, · 1A / 30VDC

Communication mode: RS485 (Modbus RTU protocol)

Working environment: temperature 0 ~ 50 ℃, humidity < 85%

Power supply: dc220v or AC220V / 50Hz, dc110v optional (determined when ordering)

Power consumption: 250W

3、 Panel description

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4、 Terminal block

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