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VDH doc. 032679
Software: ALFA31
* Installation.
On the topside of the ALFANET 31 you can see how the sensor, power supply and relay have to be
connected.
After connecting the ALFANET 31 to the power supply, a self test function is started. As this test is
finished, the measured temperature appears in the display.
When the relay is activated, the led 'on' will light-up in the display.
And the ALFANET 31 is by use of the ALFANET PC-INTERFACE controllable on the PC.
* Control.
The ALFANET 31 thermostat can be controlled by three pushbuttons on the front. These keys are;
SET
- view / change the setpoint.
UP
- increase the setpoint.
DOWN - decrease the setpoint.
* Viewing setpoint.
By pushing the SET key the setpoint appears in the display. The led 'set' starts blinking. A few
seconds after releasing the SET key the setpoint disappears and the measured temperature is shown
in the display.
* Changing setpoint.
Push the SET key and the setpoint appears in the display. Release the SET key. Now push the SET
key again and together with the UP or DOWN keys the setpoint can be changed. A few seconds after
releasing the keys the measured temperature shows again in the display.
User manual ALFANET 31
Cool/Heat Thermostat.
Version: v1.0
File: Do032679.WP8
1
Date: 24-11-2003
Range: -50/+50°C per 1°C
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Summary of Contents for VDH ALFANET 31
- Page 1 Range: -50/+50°C per 1°C * Installation. On the topside of the ALFANET 31 you can see how the sensor, power supply and relay have to be connected. After connecting the ALFANET 31 to the power supply, a self test function is started. As this test is finished, the measured temperature appears in the display.
- Page 2 If the required parameter is selected, the value can be read-out by pushing the SET key. Pushing the UP or 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 31 changes to its normal operation mode. * Adjustment sensor.
- Page 3 * Parameters ALFANET 31. PARA- DESCRIPTION PARAMETER RANGE STANDARD METER VALUE Switching differential 1..15°C Minimum setpoint -50..+50°C Maximum setpoint -50..+50°C Offset temperature sensor -15..+15°C Startup delay after power failure 0..99 min. Relays on at sensor failure 0 = No 1 = Yes...
- Page 4 * Dimensions. * Connection Diagram.
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