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User Manual

ALFA(NET) D1-DP 12Vdc

-10/+90

O

C (0,1)

Cool / Heat Thermostat.

VDH doc: 091146

Version v1.0

Date: 16-12-2009

Software: 091180 ALFA D1-DP

File: Do091146.wpd

Range: -10/+90

C pro 0,1

C

* Function.

The 

ALFA(NET) D1-DP

 is a digital alarm thermostat for wall mounting.  The readout is in

tenth degrees Celsius and has large 26 mm displays. The unit has two LED indications with
10 mm LED’s one for ‘Alarm’ (red) and one for ‘ON’ (green) indication. 
The thermostat can be programmed with parameter 15 for cooling or heating. 
The 

ALFA

NET

 D1-DP

 is provided with an RS 485 Network connection, so it can be read out

and adjusted on the Alfanet.

* Installation.

On the topside op the 

ALFA(NET) D1 DP

 is shown how the sensor, power supply and relay

are connected.
A few seconds after connecting the 

ALFA(NET) D1 DP

 to the power supply the green LED

‘on’ lit and  the measured temperature appears in the display.
When the alarm relay is activated, the LED 'on' will light-up in the display.

Summary of Contents for ALFA D1-DP

Page 1: ... LED s one for Alarm red and one for ON green indication The thermostat can be programmed with parameter 15 for cooling or heating The ALFANET D1 DP is provided with an RS 485 Network connection so it can be read out and adjusted on the Alfanet Installation On the topside op the ALFA NET D1 DP is shown how the sensor power supply and relay are connected A few seconds after connecting the ALFA NET ...

Page 2: ...d temperature is shown in the display Changing set points Push the SET key and the set point appears in the display Release the SET key Now push and hold the SET key again and together with the UP or DOWN keys the set point can be changed A few seconds after releasing the keys the measured temperature is shown again in the display Error messages In the display of the ALFA NET D1 DP the following e...

Page 3: ...on mode Parameters ALFA NET D1 DP Para meter Description Parameter Range Standard Value 01 02 03 04 Switching differential Minimum set point Maximum set point Offset temperature sensor 0 1 10 0 C 10 90 0 C 10 90 0 C 10 0 10 0 C 3 0 10 0 90 0 0 0 10 11 12 Startup delay after power failure Relay on at sensor failure Buzzer on at alarm 0 99 Minutes 0 No 1 Yes 0 No 1 Yes 0 0 0 15 16 17 18 19 20 Functi...

Page 4: ...ation RS 485 Network 2x twisted pair shielded min 0 5mm2 maximum length 1KM 12V A B 0V only at ALFANET model Display 3 digit 7 segments display with 26 mm LED s green Indications 10 mm red Alarm LED 10 mm green ON LED Control by pushbuttons on the front Front Polycarbonate IP65 Sensor SM 811 2 wire PTC temperature sensor 1KOhm 25O C Dimensions 200 x 112 x 31 mm hwd Mounting 2x Headed screw on dist...

Page 5: ...5 Connections Alfa D1 DP connections Alfanet D1 DP connections ...

Page 6: ...6 Dimensions ...

Page 7: ...7 Adresse VDH Products BV Tel 31 0 50 30 28 900 Produktieweg 1 Fax 31 0 50 30 28 980 9301 ZR Roden Email info vdhproducts nl The Netherlands Internet www vdhproducts nl ...

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