User manual ALFA 801 and ALFANET 801
Contents
1. User manual ALFA 801 and ALFANET 801 Pulse pause Timer unit VDH doc 060344 Version v1 0 Date 02 02 2006 Software ALFA 801 Flash File Do060344 wpd Range 0 999 Operation The ALFA NET 801 is a panel mounting timer unit with a pulse pause relay function The pulse and pause time are set by parameters P01 and P02 The timer unit has a range from 0 999 minutes or seconds P03 The timer unit has also a contact input for starting the unit with pulse or pause P05 The ALFANET 801 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 topside of the ALFA NET 801 can be read how to connect this unit such as powersupply relay output contact input and network After power up the ALFA NET 801 and the self test is finished the unit displays the pulse or pause time As the output relay is activated the LED on in the display lits to indicate this Control The ALFA NET 801 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 pulse pause 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 pulse or pause time can by changed A few seconds after releasing the keys the timer unit returns2. est time in seconds To indicate this the lower segment of the first digit is lit and the other digits show the time in seconds Error messages In the display of the ALFA NET 801 the following error messages can appear EE Setting are lost Solution Reprogram the settings Technical details ALFA 801 Pulse Pause Timer unit or Type Range Supply Relay Input Communication Control Front Dimensions Panel cutout ALFANET 801 Pulse Pause Timer unit with network 0 999 min sec pulse time 0 999 min sec pause time 230 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 8071 3 wire shielded cable A B and Gnd Thru pushbuttons on front Polycarbonate IP65 35 x 77 x 71 5mm hwd 29 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 60 Address VDH Products BV Produktieweg 1 9301 ZS Roden The Netherlands Tel Fax Email Internet 31 0 50 30 28 900 31 0 50 30 28 980 info vdhproducts nl www vdhproducts nl Connections ALFA NET 80X series O gt ee ee Cc O C O O O go go I I Ww Ww ml O gt gt gt l CO ox Oo SUPPLY RELAY Vac OUTPUT Vdc SPDT Alfan
3. et network connections RS 485 NETWORK CONNECTIONS 3 wired shielded One of the Controllers can be the PC Interface IH v eul7 i JUU UW REMARK To terminate RS485 Network Connect a 250 Ohm resistor between Line A and Line B at both cable ends P Line B Common GND yp ot am lt O ap I lt O dp aD P e OE V9 v O v O T a oO 85g 2 sooo eo c VO gt ooh NOO c gt RS485 CONTACT NETWORK INPUT optional 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 AQ GND Endpoint Network cable Connection Network cable 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
4. to its normal operation the LED set switches off Setting 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 801 will return to it s normal operation and the changes are saved Parameters ALFA 801 Para Description Parameter Range Default meter value 01 Pulse time 0 999 10 02 Pause time 0 999 50 0 Unit of parameter 01 and 02 0 minutes 1 seconds 3 l 4 Start with pause after power failure 0 05 Contact input mode 0 4 0 Not active 1 Start with pulse time at closing the input As long as the input is closed pulse will be active 2 Start with pause time at closing the input As long as the input is closed pause will be active 3 At input impulse start pulse time 4 At input impulse start pause time 1 9 Network number only at ALFANET 801 Software version Production year Production week Serial number x 1000 Serial number units Remark In case that the timer unit is set on minutes P01 0 the display shows the last minute of the current r
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