User manual ALFA 71 Hz
Contents
1. DOWN key it is possible to chose the required parameter When the required parameter is selected the value from this parameter can be read out by pushing the SET key By pushing the UP and DOWN keys the value can be changed Keep the SET key pushed If no key is pushed for 20 seconds the ALFA 71 Hz will return to it s normal operation mode and the changes will be stored Parameters ALFA 71 Hz Minimum adjustable set point Maximum adjustable set point Output voltage at minimum set point Output voltage at maximum set point Software version Production year Production week Serial number x1000 Serial number units Technical details Type ALFA 71 Hz set point controller Range Adjustable from 0 100 Hz per 1 Hz Supply 24Vdc 18 30Vdc 1 2VA Read out 3 digits 7 segments display Control With push buttons on the front Front Polycarbonate IP65 Output Adjustable from 0 10Vdc Dimensions 35 x 77 x 71 5mm hwad Panel cut out 28 x 70mm hw Accuracy 0 5 from the range Provided with memory protection during power failure Connection with screw terminals on the back side Special versions are available upon request Connections V 24Vdc Common OV SUPPLY OUTPUT 24Vdc 0 10Vdc Dimensions 9 Address VDH Products BV Tel 31 0 50 30 28 900 Produktieweg 1 Fax 31 0 50 30 28 980 9301 Z2. S Roden Email info vdhproducts n Netherlands Internet www vdhproducts nl
3. User manual ALFA 71 Hz OUT 1 OUT 2 _ ALARM Hz Frequency set point controller 0 10Vdc 0 100 Hz ALFA 71 VDH doc 080596 Versie v1 0 Datum 24 04 2008 Software 072296 ALFA71_Hz File DO080596 WPD 0 100Hz 1 Installation On the upper side of the ALFA 71 Hz is shown how the power supply and the output should be connected A self test is started after the ALFA 71 Hz is connected to the power supply After the self test is completed the adjusted frequency appears on the display Control The ALFA 71 Hz controller can be controlled by four push buttons on the front SET viewing changing from the adjusted value and resetting from the alarm UP raising the adjusted value DOWN lowering the adjusted value MODE hidden key above the SET key Changing the set point Push the SET key and release it Push the SET key again and now the set point can be changed by pushing the UP or DOWN key simultaneously with the SET key If no key is pushed for a few seconds the ALFA 71 Hz will return to it s normal operation Output voltage By pushing the hidden MODE key the output voltage will appear on the display Internal parameters Besides the adjustments from the set points it is possible to adjust the internal parameters By pushing the DOWN key for more than 10 seconds the internal parameter menu will be active This is shown by flashing from the upper and lower segment from the most left display With the UP and
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