The US2000 understation is used to measure and regulate the refrigerating cells in the fruit stores. The equipment contains the necessary hardware for complete regulation of 4 refrigerating cells. The data of moisture, temperature, defrosting sensors located in the cells, are transmitted by a 4 wires system to the understation. The temperature values with a linear output signal are transferred to the A/D converter by hybrids. All the setting parameters are programmed on PC by a serial connection. The understation programme works autonomously even without PC.
Technical characteristics part 1
- 4 temperature inputs for refrigerator
- 4 temperature inputs for fruit temperature
- 4 temperature inputs for output temperature
- 4 temperature inputs for glycole going
- 4 temperature inputs for glycole return
- 4 moisture inputs for humidification
- 1 temperature input for tank temperature
- 1 temperature input for external temperature
- 1 temperature input for external moisture
- 4 current inputs for ventilators current
- 4 current inputs for glycole current
- 4 outputs 4-20 mA for glycole valves
- 2 pressure inputs for condensers regulation
- 1 three-phase input for grid tension
- 4 digital inputs for open-close doors of the cell
- 10 digital inputs for alarm states
- 4 relay outputs for refrigerator regulation
- 4 relay outputs for humidification valves regulation
- 4 relay outputs for defrosting valves regulation
- 2 relay outputs for condensers regulation-open
- 2 relay outputs for condensers regulation-close
- 1 relay output for defrosting pump
- 1 relay output for emptying valves
- 3 relay outputs for compressors regulation
- 8 analog inputs for cell pressure
Technical characteristics part 2
- Feeding: 24V
- Power absorption: 100VA
- Temperature inputs: Hybrid amplifier
- Protocol: RS422
- Data transferring speed: 19.200 Baud
- Connection: extractable screw terminals to 1,5mm²
- Protection grade: IP50
- Dimensions: 490x230x135mm LxDxH
- EU norm: CE certificated
- EU norm: IEC1000-4-2 ICE1000-4-4 EN55022
CODE: 47-47-17
