VDH ALFA 71 PI Manual

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Description: Alfa(net) 71 PI 0/+100°C Pages: 8 Doc.no: 160111Type: Manual By: BVDB Doc.Version: 1.0File: Do160111 ALFANET 71 PI 0_+100°CFlash V10 EN.docxSigned: Date: 02-02-2016VDH Products BV Software 160064 SW.Version V1.00Manual ALFA(NET) 71 PI0/+100°C1 FunctionThe ALFA(NET) 71 PI is a panel mount thermostat-unit,with an analog 0-10Vdc PI-output with forced heat option. The thermostat has also three relaysoutputs selectable for function cooling, heating or alarm. The temperature is being measured by anSM811 2-Wire temperature sensor.The ALFANET 71 PI is provided with an RS-485 network connection and can be readout or set by anPC with the ALFANET program connected thru an ALFANET PC-Interface.2 InstallationOn the connection diagram of the ALFA(NET) 71 PI is shown how the sensors, analogue output,power supply, relays and optional network are to be connected. After connecting the ALFA(NET) 71PI to the power supply, a self-test function is started. As this test is finished, the measuredtemperature appears in the display.3 ControlThe ALFA(NET) 71 PI thermostat can be controlled by four pushbutton on the front. These keys are;SET - view / change set value and reset alarm.∏ UP - increase set value.π DOWN - decrease set value.°C - hidden relay status key.