User manual ALFA 1-LS and ALFANET 1-LS
Contents
1. 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 Dimensions 58 30 48 Te S koi 90 62 Connections RS 485 NETWORK CONNECTIONS 2 twisted pair shielded cable One of the Controllers can be the PC Interface Repeater is also a contr Place Terminator resistor of 250 Ohm only at both ends of the RS485 cable ce ee ee cm ce ce ce ee ee ee ee ee ee ee between line A and line B May be provided in the controller with a jumper For signal conditioning Shield only at one point to Earth u Supply Vac Vdc see sticker N V L OV Relay l Output ALFA 1 LS lt gt w CLO ro SZ pr 53 w CO dO oO MO lt X XM ex vo 7D i NZ A7 Locs S EN EN O O OwJ E POZOS D Ce oloprnrno x co croa pse O O m cos So m EP Nr ss YO S OLOr DO 5 vooo ODS AW ss Zzpypocrratan c PO VTO O re V lt o SO O VEYMwowaemMm AX ozv p VO Oon00 p QQ Vote MO WY Kala y Cm 5 PA Cane ADPHANnNoe G T Place Pullup down resistors gt lt 3 lm a Shield only at 4 Shield onlyat Only at one pointinthe 8 3 rA aone side of a F aone sideof Network May be provided in x the cable 5 the cable the controller with jumpers D J 3 to Earth to Earth Oruse ALFA 1 TERM2. Minimum off time relay 0 99 minuten Network number only at network Software version Production year Production week Serial number x1000 Serial number units 1 If the delay is active the led on will flash Function diagram Relay function 1 or Relay function 0 input lt setpoint gt relay on input gt setpoint gt relay on l ooa i L lM Signal Signal l input input Diff Diff Setpoint Setpoint Adjusment input signal The input can be adjusted with the Offset parameter 04 Indicates the ALFA NET 1 LS e g 2 too much the Offset has to de decreased with 2 Error messages In the display of the ALFA 1 LS the following error messages can appear EE Settings are lost Solution Reprogram the settings Technical details Type ALFA 1 LS Level Switch controller or ALFANET 1 LS Level Switch controller with network Range 0 100 read out per 1 Supply 230 Vac 1 2VA 50 60Hz or else see product sticker Relay gt SPDT 250V 16A C NO 8A C NC cos phi 1 Control through push buttons on the front Front Polycarbonate Input 0 10Vdc 0 100 Communication RS485 Network 2x twisted pair shielded min 0 5mm Dimensions 90 x 53 x 58mm hwd Panel hole 46 x 53mm hw Provided with memory protection during power failure Connection with screw terminals on top and bottom side Special version on request available Adress VDH Products BV Tel
3. INATOR L A a KOLL L ALAKIT ERPS CoC mI CAA NAN i P Pkebx sec ocx ox oes PEt 5 SS N a Network connections Pair 1 Connect A HI to A HI Connect B LO to B LO Pair 2 Connect GND 0V to GND 0V Shield Connect Shield to clean Earth only on one side of cable Endpoint Network cable Connection Network cable Endpoint Network 2 twised pair shielded point 2 twised pair shielded Network min 0 5mm Network min 0 5mm Pair 1 A B Pair 2 Gnd Max Cable length 1KM Pair 1 A B Pair 2 Gnd Note 1 AVOID LONG STUB CABLES No longer than 0 5M otherwise use a Repeater
4. SET key and the setpoint appears in the display Release the at SET key Now push the SET key again and together with the UP or DOWN keys the set point can be changed A few seconds after releasing the keys the measured temperature shows again in the display Setting internal parameters Next to the adjustment of the setpoint some internal settings are possible like differential sensor offset setpoint range and the function cooling or heating By pushing the DOWN key more than 10 seconds you enter the internal programming menu In the left display the upper and lower segment 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 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 ALFA NET 1 LS changes to it s normal operation mode Parameters ALFA NET 1 LS Para Description Parameter Range Standaard meter value 3 Switching differential 1 15 Minimum adjustable set point 0 100 Maximum adjustable set point 0 100 Offset input signal 15 15 Function relay 0 1 0 input gt set point relay on 1 input lt set point relay on Switch on delay relay 0 99 Switch off delay relay 0 99 Parameter 16 17 in seconds or minutes O sec 1 min Minimum on time relay 0 99 minuten
5. User manual 7 7 A ALFA 1 LS and ALFANET 1 LS Level switch controller with input 0 10V 0 100 ALFA 1 LS VDH doc 071728 Versie v1 1 Datum 12 12 2007 Software 060376 ALFA 1 LS File Do071728 wpd Range 0 100 per 1 Function The ALFA NET 1 LS is a level switch controller for rail mounting The read out is in whole percent The function from the controller can be changed through the internal parameters It is possible to switch the relay if the measured input is lower or higher than the adjusted set point The ALFANET 1 LS has a RS 485 network connection for read out and adjusting through the Alfanet Installation On the topside of the ALFA NET 1 LS is shown how the input power supply and relay have to be connected After connecting the ALFA NET 1 LS 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 lignt up in the display Control The ALFA NET 1 LS can be controlled by three push buttons 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
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