User manual ALFANET 59 Hygrostat.
Contents
1. User manual ALFANET 59 Hygrostat auT 1 OUT2 ALARM ooog ALFA 59 VDH doc 080339 Version v1 0 Datum 06 03 2008 Software ALFA NET 59 File Do080339 WPD Range 0 100 RH Installation On the topside of the ALFANET 59 is shown how the sensor power supply and relays has to be connected After connecting the ALFANET 59 to the power supply a self test function is started As this test is finished the measured humidity appears in the display Control The ALFANET 59 Hygrostat can be controlled by four push buttons on the front These keys are SET view change set point and reset alarm UP increase value DOWN decrease value RH hidden key above SET key and behind RH symbol View set point By pushing the SET key the set point appears in the display The decimal point of the last display starts blinking to indicate this After a few seconds after releasing the SET key the set point disappears and the measured temperature is shown again Changing set point Push the SET key and the set point 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 After a few seconds after releasing the SET key the set point disappears and the measured temperature is shown again Status of the Relays By pushing the hidden C key the display shows the status of the relays Each display segment shows the status of the relay out2. 31 0 50 30 28 980 info vdhproducts nl www vdhproducts nl
3. 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 P37 Technical details Type ALFANET 59 Hygrostat Range 0 100 RH read out per 1 RH Read out 3 digit 7 segments display Status LEDs LED SET and LED RH Supply 230 Vac 50 60Hz 5 10 Relays Ry1 SPST NO 250V 8A cos 1 of 250V 5A cos 0 4 Ry2 SPST NO 250V 8A cos 1 of 250V 5A cos o 0 4 Ry3 SPDT NO NC 250V 8A cos o 1 of 250V 5A cos o 0 4 The three relays have one common C Control Thru pushbuttons on front Front Polycarbonate Sensor RH 95 2 4 12Vdc 0 100 RH 0 1 Vdc Communication RS485 Network 2 wire shielded min 0 75mm A B and GND Dimensions 35 x 77 x 71 5mm HWD Panel cutout 29 x 71mm HW Accuracy 0 5 of range Provided with memory protection during power failure Equipped with self test function and sensor failure detection Connection with screw terminals Special version on request available Parameters ALFANET 59 Para eeu ce ae Parameter Range Default meter Value Function 1 1 Humidify 2 Dehumidify 3 Alarm Function Relays 2 1 Humidify 2 Dehumidify 3 Alarm Function Relays 3 1 Humidify 2 De
4. humidify 3 Alarm Offset Humidity sensor 15 15 RH Switching differential relay 1 1 15 RH ii Switching offset relay 1 15 15 RH 12 Switching differential relay 2 1 15 RH 13 Switching offset relay 2 15 15 RH 14 Switching differential relay 3 1 15 RH Switching offset relay 3 15 15 RH 20 Minimum set point 0 100 RH 21 Maximum set point 0 100 RH 30 0 None Absolute Relative 100 RH 100 RH 99 min 99 min fail safe al control al No Yes No Yes N ul Minimum alarm set point Maximum alarm set point Time delay minimum alarm Time delay maximum alarm Function alarm relay Auto reset alarm after failure recovering Manual reset alarm relay with set key THR E eee Control delay after power failure 99 min Forced relay function at sensor failure None Humidify Dehumidify Network number Software version Production year Production week Serial number x1000 Serial number units c VDH Products BV Dimensions 0000000066006 SeCOO00C00000 Address VDH Products BV Produktieweg 1 9301 ZS Roden The Netherlands 3 Alarm of 1 gt Supply Vac de N ac de tac del BOCOCOCOWOO QUT ouT2 ALARM CIM VDH ALFA 59 Tel Fax Email Internet Q 7470000770 R5485 B RS485 A RI1970 2 RH sensor RH sensor RH sensor C95 7 RI 95 31 0 50 30 28 900
5. put showing O off and 1 on The code 110 means relay 1 and relay 2 are on and relay 3 is off Setting internal parameters Next to the adjustment of the set point some internal settings are possible like differentials sensor adjustments set point range and function of the hygrostat By pushing the DOWN key for more than 10 seconds you enter the internal program ming menu In the left display the upper and the lower segments are blinking Over the UP and DOWN keys the required parameter can be selected see table for the parameters If the required parameter is selected the value can be read out by pushing the SET key Pushing the UP and DOWN keys allows you to change the value of this parameter If after 20 seconds no key is pushed the ALFANET 59 changes to it s normal operation mode Sensor adjustment The humidity sensor can be adjusted by using the Offset Humidity sensor parameter 05 Indicates the ALFANET 59 e g 2 too much than the Offset Humidity sensor parameter 05 has to be decreased with 2 Error messages In the display of the ALFANET 59 the following error messages can appear rLO Minimum RH alarm Solution E1 rHl Maximum RH alarm Check if sensor is connected correctly E1 RH sensor failure Check RH signal 0 100 RH 0 1 Vdc Replace sensor EE Settings are lost Solution EE Reprogram the settings L In case of sensor short circuit the display alternates between error
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