MST20V
Field Operation and Control Device
LCD Control Panel with Sensor
Description
MST20V LCD temperature (MST20V-H with humidity) control panel is designed to work with DPC, DSC, DAC, and VAV series microcomputer programmable controllers.
It has a large-scale LCD, which can display input point value of controller (temperature sensor, humidity sensor, etc.). This panel has eight control keys for start, stop, change humidity or temperature setting value etc. This panel can be adapted to be used for user request at scene need timely examine all sorts of numerical value or timely make operation.
Features
- 16 bit microprocessor, high precise operation.
- Adopt RS- 485 two-wire communication network (4 wires in total with power
line), consists with MODBUS RTU format. - Large size back light LCD panel. Convenience during the night operation.
- Selectable usage for air conditioning, central heating, constant temperature, constant temperature and humidity application.
- Can show temperature, humidity, dew point, temperature/Humidity set point values, fan coil running state and cooling, heating, de-humidify status.
- Can set temperature, humidity values and control fan start/stop.
- Celsius or Fahrenheit unit selectable for Temperature display.
- Can display DPC time format, time coincident by the time synchronization.
- Can manual control cooling, heating, humidify, dehumidify for maintenance testing. When in manual operation, an icon will be displayed for user’s attention.
- Display alarm code and buzzer for a new alarm. It has alarm history for logging. The alarm history can be deleted by authorized personnel. Buzzer can be turned off.
- Included self wakeup function (Watch Dog) when software is down.
- Password lock.
- Has parameter mode, which can display and control input (AI/ BI) and output (AO/ BO) status and all internal numerical parameter values (AV/ BV) of DPC, DAC, and VAV. In parameter mode, output (AO/ BO) points permit priority control.
