VDH ALFANET 30 User manual
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User manual ALFANET 30
Thermometer.
VDH doc. 012193 Version: v1.1 Date: 18-10-2002
Software: ALFANET 30 File: DO012193.WP8 Range: see Sticker
*Installation.
On the topside of the ALFANET 30 you can see how the sensor, power supply and relay has to be
connected.
After connecting the ALFANET 30 to the power supply, a self test function is started. As this test is
finished the measured temperature appears in the display.
And the ALFANET -30 is by use of the ALFANET PC-INTERFACE controllable on the PC.
*Control.
The ALFANET 30 thermostat has for normal use no need for controls. Only for adjustment of the
sensor the ALFA 30 has three hidden pushbuttons on the front. These key are:
SET - view / change the setpoint.
UP - increase the setpoint.
DOWN - decrease the setpoint.
These pushbuttons are placed at the following places at the front:
SET - To the lower right of the display.
UP - To the upper left of the display.
DOWN - To the lower left of the display.
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*Setting internal parameter.
To adjust the sensor-offset use the following instructions;
By pushing the DOWN key more than 10 seconds, you enter the ‘internal programming menu’. In
the left display the upper and lower segments are blinking. Over the UP and DOWN keys the
required parameter can be selected (see table for the parameters). In this case only ‘04’ offset
temperature sensor.
If the required parameter is selected, the value can be read-out by pushing the SET key. Pushing
the UP and DOWN keys together with the SET key allows you to change the value of this
parameter.
If after 20 seconds no key is pushed, the ALFANET 30 changes to its normal operation mode.
*Adjustment sensor.
The sensor can be adjusted by using the Sensor Offset (parameter 04). Indicates the ALFANET
30 e.g. 2°C too much, the Sensor Offset has to be decreased by 2°C.
*Error messages.
In the display of the ALFANET 30 the following error messages can appear:
E1 - Sensor broken Solution:
- Check if the sensor is connected correctly.
- Check the sensor (1000Ω/25°C).
- Replace the sensor.
EE - Settings are lost. Solution:
- Reprogramme the settings.
-L- - In case of sensor short-circuit the display alternates between error-code E1
and -L-, as indication for a short-circuit sensor.
-H- - In case of open-circuit sensor the display alternates between error-code E1
and -H-, as indication for a open circuit sensor.
*More information of the ALFANET 30.
- Provided with memory protection during power failure.
- Connection with screw terminals on the backside.
- Equipped with self test function and sensor failure detection.
- Special versions are available upon request.
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* Technical details.
Model : ALFANET 30
Range : -50/+50°C, readout per 1°C or
-50/+150°C, readout per 1°C (see Sticker)
Supply : 230 Vac (or 24Vdc or 12Vdc)
Communication : RS485-Network (2-wire shielded cable min. 0,75mm2)
Control : by hidden pushbuttons on the front.
Front : Polycarbonate IP65
Sensor : SM 811/2m (1000Ωat 25°C)
Sizes : 35 x 77 x 71,5mm (hwd)
Panel hole : 28 x 70mm (hw)
*Parameters ALFANET 30.
PARA-
METER DESCRIPTION PARAMETER RANGE STANDARD
VALUE
04 Offset temperature sensor -15..+15°C 0
52 Time correction
(at realtime clock) -99..+99 0
90
95
96
97
98
99
Network number
Software version
Production year
Production week
Serial number (x1000)
Serial number (units)
1..31
0..255
00..99
1..52
0..255
0..999
1
-
-
-
-
-
*Address.
VDH Products BV Tel: +31 (0)50 - 30 28 900
Produktieweg 1 Fax: +31 (0)50 - 30 28 980
The Netherlands Internet: www.vdhproducts.nl
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*Dimensions.
*Connection Diagram.
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