User manual ALFA 72-SP/DR
Contents
1. Common c Ryl spray Ry3 alarm Ry3 alarm Ry2 dry r A RELAY OUTPUTS Tel Fax Email Internet wh Common sensor 1 br SUPPLY SM811 12Vac Temp sens 31 0 50 30 28 900 31 0 50 30 28 980 info vdhproducts nl www vdhproducts nl2. LO Minimum alarm Solution E1 HI Maximum alarm Check if sensor is connected correctly E1 Ssensor failure Check sensor 10000 25 C EEE Settings are lost Solution EEE Reprogram the settings L In case of sensor short circuit the display alternates between error code E and L as indication for a short circuit sensor H In case of open circuit sensor the display alternates between error code E and H as indication for a open circuit sensor Reset Alarm When a error messages appears it can be reset by pushing the SET key The function of this key depends on parameter P42 Technical details ALFA 72 SP DR Type ALFA 72 SP DR_ Spraying Drying Thermostat Range 50 150 C read out per 1 C Supply 12Vac 3VA 50 60HZz 5 10 or else see product sticker Read out 3 digit 7 segments display Relays Ry1 spraying SPST NO 250V 8A cos o 1 of 250V 5A cos o 0 4 Ry2 drying SPST NO 250V 8A cos 1 of 250V 5A cos o 0 4 Ry3 alarm SPDT NO NC 250V 8A cos 1 of 250V 5A cos o 0 4 Relays have one common C Control Through push buttons on the front Front Polycarbonate IP65 Sensor SM 811 2m PTC 10000 25 C Dimensions 35 x 77 x 71 5mm hwd Panel cut out 28 x 70mm hw Accuracy 0 5 from the range Provided with memory protection during power failure Equipped with self test function and sensor failure detection Connection with screw terminals Special
3. version on request available Parameters ALFA 72 SP DR Para description Parameter Range Default ea value 05 Offset Offset temperature sensor n sensor 15 0 4 15 0 C E Switching differential relay 1 spraying Offset relay 1 spraying Switching differential relay 2 drying Offset relay 2 drying 25 Minimum adjustable set point 50 150 C 50 26 Maximum adjustable set point 50 150 C 150 30 Type Alarm thermostat 0 No alarm 1 Absolute Minimum alarm set point 50 150 C Maximum alarm set point 50 150 C Time delay minimum alarm 0 99 Minutes Time delay maximum alarm 0 99 Minutes Function alarm relay 0 Fail safe alarm 1 Control alarm Reset alarm relay after recovering alarm 0 No 1 Yes Reset alarm relay after manual reset 0 No 1 Yes Control delay after power failure 0 99 Minutes Relay 1 on when sensor failure 0 No 1 Yes Relay 2 on when sensor failure 0 No 1 Yes Software version Production year Production week Serial number x1000 Serial number units Dimensions Connections She apggjs e al METS 5 TN 6 Tl HT TN 69 5 ALFA 72 SP DR Trafo 3VA 230 12Vac VDH art nr 350 010073 230Vac Address VDH Products BV Produktieweg 1 9301 ZS Roden The Netherlands
4. User manual ALFA 72 SP DR Se 50 150 C fii Spraying Drying a Thermostat VDH doc 080652 Version v2 0 Date 24 02 2009 Software ALFA 72 SP DR 50 150 File Do080652 wpd Range 50 150 C Installation On the upper side from the ALFA 72 SP DR is shown how the sensor supply and relays should be connected After power up a self test is started If the self test is completed the measured temperature will be shown on the display Thermostat 1 with function spraying is made by the sensor set point 1 spraying and relay 1 Thermostat 2 with function drying is made by the sensor set point 2 drying and relay 2 Relay 3 is an alarm relay Control The ALFA 72 SP DR thermostat can be controlled by four push buttons on the front SET viewing changing the adjusted value and reset alarm UP raise the adjusted value DOWN lower the adjusted value C hidden key above the SET key Viewing the set points Viewing set point thermostat 1 spraying By pushing the SET key simultaneously with the UP key the adjusted set point from thermostat 1 spraying can be read out Viewing set point thermostat 2 drying By pushing the SET key simultaneously with the DOWN key the adjusted set point from thermostat 2 drying can be read out A few seconds after releasing the SET key the set point disappears and the measured value will be visible again Changing the set points Push the SET key and the UP or DOWN key so th
5. e set point from thermostat 1 or 2 appears on the display Release the SET key By pushing the SET key again the set point can be changed with the UP or DOWN keys A few seconds after releasing the keys the set point disappears and the measured value will be visible again Status from the Relais Push the hidden C key The three digits are indicating the status from the relays hereby O off and 1 on The code 110 means that relay 1 and relay 2 are on and relay 3 is off Where OUT 1 is relay spraying OUT 2 is relay drying and ALARM is relay alarm Adjusting the interne parameters Besides the adjusting of the set point there are a few internal adjustments possible By pushing the DOWN key for more than 10 seconds the interne programming menu will be entered The upper and lower segment from the most left digit starts flashing Now the required parameter can be selected with the UP and DOWN keys see the table for the parameters When the required parameter has been selected it can be read out by pushing the SET key It can be changed with the UP en DOWN keys If no key is pushed for 20 seconds the ALFA 72 SP DR will return to it s normal operating mode Adjusting the sensor The sensor can be adjusted with the sensor offset parameter 05 Indicates the ALFA 72 SP DR f i 2 C to much than the sensor offset should be lowered with 2 C Error codes On the display of the ALFANET 75 the following error messages can appear
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