hit counter code
Download
Share
Print this page
  1. Manuals
  2. Brands
  3. VDH Manuals
  4. Thermostat
  5. ALFA 52-VS
  6. User manual

VDH ALFA 52-VS User Manual

0-20 degrees c differential thermostat
Hide thumbs
1
2
3
4

Advertisement

Quick Links

Download this manual
User manual
ALFA 52 VS 0-20
Differential Thermostat.
VDH doc. 080331
Software;
992903 ALFA 52/72 VS 20 -50..+50
100320 ALFA 52/72 VS 20 -20..+80
992901 ALFA 52/72 VS 20 0..+100
* Installation.
On the connection diagram of the ALFA 52-VS is shown how the sensors, power supply and relays
has to be connected. After connecting the ALFA 52-VS to the power supply, a self test function is
started. As this test is finished, the measured differential temperature of sensor-1 minus sensor-2
appears in the display.
* Control.
The ALFA 52-VS thermostat can be controlled by four pushbuttons on the front These keys are:
SET
 (UP)
 (DOWN)
MODE
* Viewing the temperature from sensor-1 and sensor-2.
By pressing the UP and DOWN keys simultaneously and after that the UP key, the measured value
from sensor-1 can be read-out. If the down key is pressed, the measured value from sensor-2 is
shown. If no key is pressed for a few seconds, the differential temperature is shown again.
* Viewing the delta-setpoint.
By pushing the SET key, the set point of delta thermostat appears in the display.
A few seconds after releasing the keys the setpoint disappears and the differential temperature is
shown again in the display.
* Changing the delta-setpoint.
Push the SET key. The delta-setpoint appears in the display. Release the SET key. Now push the SET
key again together with the UP or DOWN keys to change the set point. A few seconds after releasing
the keys, the measured differential temperature is shown again in the display.
* Status of the Relays.
By pushing the MODE key the display shows the status of the relays.
Each digit shows the status of one relay output, showing 0 = off and 1 = on.
The code 110 means relay 1 and 2 are on and relay 3 is off.
Relays 1 and 2 are used for the differential thermostat (see function diagram).
Relay 3 is used as an alarm relay.
O
C
File: Do080331.wpd
Typenr.: 904.000806
Typenr.: 904.000929
Typenr.: 904.000916
- view / change set point and reset the alarm
- increase the set point.
- decrease the set point.
- relays status key.
Versie: v1.2
1
Datum: 22-04-2010
Static range (see sticker);
-50/+50,0  C
-20/+80,0  C
0/+100,0  C

Advertisement

loading

Related Manuals for VDH ALFA 52-VS

Summary of Contents for VDH ALFA 52-VS

  • Page 1 On the connection diagram of the ALFA 52-VS is shown how the sensors, power supply and relays has to be connected. After connecting the ALFA 52-VS to the power supply, a self test function is started. As this test is finished, the measured differential temperature of sensor-1 minus sensor-2 appears in the display.

  • Page 2: Error Messages

    Sensor Offset parameter 06. Indicates a Sensor e.g. 2  C to much, the according Sensor Offset has to be decreased with 2  C. * Error messages. On the display of the ALFA 52-VS the following error messages can appear: - Sensor-1 failure. Solution E1, E2: - Sensor-2 failure.
  • Page 3 If the required parameter is selected, the value can be read-out by pushing the SET key. Pushing the UP or DOWN key to change the value of this parameter. If 20 seconds no key is pushed, the ALFA 52-VS changes to the normal operation mode. * Parameters ALFA 52-VS...
  • Page 4 * Dimensions. * Connections. * Address. VDH Products BV Tel: +31 (0)50 - 30 28 900 Produktieweg 1 Fax: +31 (0)50 - 30 28 980 9301 ZS Roden Email: info@vdhproducts.nl Nederland Internet: www.vdhproducts.nl...