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User manual ALFA 803 and ALFANET 803

1. A B and Gnd Thru pushbuttons on front Polycarbonate IP65 35 x 77 x 71 5mm hwd 729 x 71mm hw Provided with memory protection during power failure Connection with screw terminals on thebackside Equipped with self test function Special versions are available upon request Dimensions 9 N Ca Address VDH Products BV Produktieweg 1 9301 ZR Roden Nederland Tel 31 0 50 30 28 900 Fax 31 0 50 30 28 980 Email info vdhproducts nl Internet www vdhproducts nl Connections ALFA NET REMARK To terminate RS485 Network Connect a 250 Ohm resistor between 80X series Line A and Line B at both cable ends OO N Line B _ Common GND 1 lt _ com GND J lt 2 __ _1 ttt 2505 OI O c S l l gt gt cel qd I _ gt O C O Ww gt r oe ee a S 0 bd O O ap go go v lt Zn S p gt O LL ot y E m o gt gt oy NOO SUPPLY RELAY RS485 CONTACT Vac OUTPUT NETWORK INPUT Vdc SPDT optional Alfanet network connections RS 485 NETWORK CONNECTIONS 3 wired shielded One of the Controllers can be the PC Interface Network connections A HI connected to A HI B LO connected to B LO GND OV connected to GND OV Shield to Earth only on one side of cable A0 GND Endpoint Network cable Connection Network cabl
2. User manual ALFA 803 and ALFANET 803 On delay Timer unit VDH doc 080419 Versie v1 0 Datum 18 03 2008 Software ALFA 804 Flash File Do080419 WPD Bereik 0 999 min sec Operation The ALFA NET 803 is a panel mounting timer unit with a on delay relay function The on delay time is set by the keys on the front panel The timer unit has a range from 0 999 minutes or seconds P01 The timer unit has also a contact input for starting stopping or waiting the unit P02 The ALFANET 803 is provided with a RS 485 network connection to readout or set the unit on the PC with ALFANET software by using a ALFANET PC Interface Installation On the upper side from the ALFA NET 803 is shown how the power supply relay and digital input should be connected After power up the ALFA NET 803 a self test will be started the timer will be resettet and the adjusted delay time will be shown on the display As soon as the relays will be activated the on led on the display will be on During the delay time the LED on will be flashing Control The ALFA NET 803 Timer unit can by controlled by three pushbuttons on the front These keys are SET view change setting A UP increase setting V DOWN decrease setting Changing current delay time Push the SET key the LED set starts blinking Release the SET key Now push the SET key again and together with the UP or DOWN keys the current on delay time can by change
3. d A few seconds after releasing the keys the timer unit returns to it s normal operation the LED set switches off Start stop and waiting from the delay timer Push the UP key to start the timer the LED on flashes The relay will not be activated During the on delay time the timer unit can be set in a waiting mode by pressing the DOWN key The on will switch off and the remaining time will be shown on the display To continue the on delay timer push the UP key As in the other hand the DOWN key is pressed again second time than the on delay timer is stopped the display shows the adjusted delay time and the on led will schwitch off The relay will be activated as soon as the delay time is passed Adjusting internal parameters By pushing the DOWN key for more then 10 seconds you enter the internal programming menu In the left display the upper and lower segments are blinking With the UP and DOWN keys the required parameter can be selected See parameter table If the required parameter is selected the value can by read out by pushing the SET key By pushing simultaneously the SET key and the UP or DOWN key the parameter value can be changed If no key is pushed for 20 seconds the ALFA NET 803 will return to its normal operation and the changes are saved Internal parameters Para Description Range Default meter Parameter value Unit of time O minutes 1 seconds Contact input mo
4. de O Not active 1 Start only at closed input pulscontact Stop only at closed input pulscontact Start and wait at closed input puls contact Start and stop at closed input puls contact Wait as long as the input is closed Start at closed input and stop as the time is passed or the input opens Wait mode O Relays off during wait mode 1 Relays on during de wait mode Display function O Display shows the adjusted time if the timer is not running 1 Display is off if the timer is not running Network number only at network version Software version Production year Production week Serial number x 1000 Serial number units P S If the timer works in minutes P01 0 than the display shows the seconds during the last minute of the delay time From the first digit only the bottom segment is on and the other digits shows the remaining seconds Error messages In the display of the ALFA NET 803 the following error messages can appear EE Setting are lost Solution Reprogram the settings Technical details Type Range Supply Relay Input Communication Control Front Dimensions Panel cutout ALFA 803 On delay Timer unit or ALFANET 803 On delay Timer unit with network 0 999 min sec 7230 Vac 24Vdc or 12Vdc on request SPDT 250V 16A C NO 8A C NC cos phi 1 Potential free input contact RS 485 network only at ALFANET 802 3 wire shielded cable
5. e Endpoint Place Terminator Resistor Network 3 wire shielded point 3 wire shielded Network of 250 Ohm at both ends of min 0 75mm Network min 0 75mm the RS485 cable between Max Cable length 1KM line A and line B Note 1 NETWORK CABLE MAY NOT HAVE ANY SIDE BRANCHES for this use Repeaters

User manual ALFA 803 and ALFANET 803

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