ZKZ-4 speed monitoring device

1、 Overview

Zkz-4-plc speed monitoring device is externally connected with speed pulse sensor and voltage transformer 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: one channel of gear plate pulse signal and one channel of residual voltage.

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

Display contents: generator frequency, speed percentage, output setting value of each circuit.

Display mode: LED nixie tube

Each signal can be output by the user within the set value of each switch; One creeping monitoring signal, the contact is closed when the speed is 0.05% ~ 1% ne.

Device fault alarm signal: PLC input and output point fault or device power loss

Analog output: 4 ~ 20mA, corresponding to unit speed 0% - 200% ne

Output contact capacity: 5A / 250VAC,. 2A / 30VDC

Communication mode: RS485 (Modbus RTU protocol)

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

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

Power consumption: 50W

3、 Panel description

4、 Terminal block