Wall-mounted Intelligent Zero-speed Monitoring Protector

This product delivers cost-effective continuous monitoring and protection for large rotating machinery. It is a specially designed and developed solution for continuously monitoring and safeguarding mechanical equipment ranging from moderately critical to low-critical levels across multiple industrial sectors, applicable to petrochemical, oil & gas, power generation, water treatment, pulp and paper, machining, mining, cement, and other industries. It covers large rotating machinery including large feed water pumps, chemical process pumps, large cooling tower fans, tunnel ventilators, blowers, induced draft fans, coal mills, centrifuges, mixers, large agitators, turbo compressors, reciprocating compressors, drive motors, generators, water turbines, etc.

## Technical Specifications

3.5-inch touch screen for human-machine interface (HMI)

Dual-channel rotational speed readout display with a resolution accuracy of ±1 RPM; proportional progress bar display with a resolution accuracy of 1%, and a maximum measuring range of 65,000 RPM

Maximum rotational speed value memory function

Monitors zero rotational speed of rotating machinery and outputs zero-speed alarm signals

Rotational speed sensor input (supports eddy current, Hall effect, and magnetoresistive speed sensors) with real-time monitoring and display of sensor gap voltage

2 channels of analog output (4~20mA output by default; 2-10V output optional)

4 switch relay outputs (Alarm, Danger, Zero Speed, Sensor Fault) with dynamic relay status indicator (250V AC 5A / 30V DC 5A)

Parameters including sensor type, alarm threshold, danger threshold, alarm delay, and measuring range are editable for each channel

### Temperature Characteristics

Storage temperature range: -50～+100℃

LCD operating temperature range: -20～+70℃