Description:
Alfa(net) 71 PI -10/+90°C
Pages:
8
Doc.no:
151043
Type:
Manual
By:
BVDB
Doc.Version:
1.1
File:
Do151043 ALFANET 71 PI -10_+90°C
Flash V11 EN.docx
Signed:
Date:
22-01-2016
VDH Products BV
Software
151121
SW.Version
V3.00
Manual
ALFA(NET) 71 PI
-10/+90°C
1
Function
The ALFA(NET) 71 PI is a panel mount thermostat-unit,
with an analog 0-10Vdc PI-output. The thermostat has also three relays outputs selectable for
function cooling, heating or alarm. The temperature is being measured by an SM811 2-Wire
temperature sensor.
The ALFANET 71 PI is provided with an RS-485 network connection and can be readout or set by an
PC with the ALFANET program connected thru an ALFANET PC-Interface.
2
Installation
On 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) 71
PI to the power supply, a self-test function is started. As this test is finished, the measured
temperature appears in the display.
3
Control
The 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.
