User manual ALFA 11 and ALFANET 11 0/+99OC(1)
Contents
1. gt v ao O NT pa S w 9 aar a m c ev X XM co v oD HY Oo Sl NY coceze fN FN O O OU amp i ee HUST Or w X m To A LO crva ypu oa To cS Oo Ore a Er N e lt MEE w S O1WOr r DO e vooo 053 Od py Zzapaoc rawtan o no oO y amp o E LO mm CAUSA ws o z0 p vo O a oo Qe p a O Vote lt E z N czo Tor 5 PA Mm ynv ADHADMOY EY 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 Endpoint only on one side of cable Network Note 1 AVOID LONG STUB CABLES No longer than 0 5M otherwise use a Repeater Address VDH Products BV Tel 31 0 50 30 28 900 Produktieweg 1 Fax 31 0 50 30 28 980 9301 ZS Roden Email info vdhproducts nl The Netherlands Internet www vdhproducts nl2. key Now push the SET key again and together with the UP or DOWN keys the setpoint 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 11 changes to it s normal operation mode Parameters ALFA NET 11 Para Description Parameter Range Standard Meter Value o 03 04 10 11 15 16 17 18 19 20 90 95 96 97 98 99 Switching differential 1 30 C Minimum setpoint 0 99 C Maximum setpoint 0 99 C Offset temperature sensor 15 415 C Startup delay after power failure 0 99 Minutes Relays on at sensor failure 0 No 1 Yes Function cooling or heating 0 Cool 1 Heat Switch on delay relays 0 99 Switch off delay relays 0 99 Parameter 16 17 in seconds or minutes 0 Sec
3. User manual ALFA 11 and ALFANET 11 0 99 C 1 Cool Heat Thermostat a PASER VERY Koay et Le o VDH doc 071464 Version v2 0 Date 22 11 2007 Software 053273 ALFA 11 21 31 _0 100 C File Do071464 wpd Range 0 99 C per 1 C Function The ALFA NET 11 is a digital thermostat for rail mounting The function from the thermostat can be programmed for cooling or heating The temperature readout is in hole degrees Celsius The ALFANET 11 has a RS 485 network connection so it can be read out and adjusted on the Alfanet Installation On the connection diagram of the ALFA NET 11 is shown how the sensor power supply and relay have to be connected After connecting the ALFA NET 11 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 light up in the display Control The ALFA NET 11 thermostat 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 SET key and the setpoint appears in the display Release the at SET
4. onds 1 Minutes Minimum on time relays 0 99 Minutes Minimum off time relays 0 99 Minutes Network number Software version Production year Production week Serial number x1000 Serial number units 1 At active delay LED on flashes Adjustment sensor The sensor can be adjusted by using the Sensor Offset parameter 04 Indicates the ALFA NET 11 e g 2 C too much the Sensor Offset has to de decreased with 2 C Error messages In the display of the ALFA NET 11 the following error messages can appear Er Sensor broken Solution Check if the sensor is connected correctly Check the sensor 1000Q at 25 C Replace the sensor EE Settings are lost Solution Reprogram the settings Technical details Model ALFA 11 Cool Heat Thermostat ALFANET 11 Cool Heat Thermostat with Network Range 0 99 C readout per 1 C Supply 230 Vac 1 2VA 50 60Hz or else see product sticker Relay SPDT 250V 16A C NO 8A C NC cos phi 1 Control by push buttons on the front Communication RS485 Network 2x twisted pair shielded min 0 5mm Front Polycarbonate Sensor SM 811 2m 10000 at 25 C Sizes 90 x 53 x 58mm hwd Panel hole 46 x 538mm hw Provided with memory protection during power failure Connection with screw terminals on the back side Equipped with self test function and sensor failure detection Special version on request available Function diagram Func
5. tion HEAT or Function COOL off kain off l gt a re Tae aaa I Temp Temp l l l Diff Diff l Setpoint Setpoint Dimensions i OOOOO0000 OQOOO00000 90 62 46 59 ee o 23 48 58 Shield only at one point to Earth 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 ee ends of the RS485 cable between line A and line B May be provided in the controller with a jumper For signal conditioning Place Pullup down resistors q x Z Shield only at xla Shield only at Only at one point in the a o 2 One side of ollo 2 One side of Network May be provided in lele the cable Sis the cable the controller with jumpers J j3 to Earth to Earth Oruse ALFA 1 TERMINATOR A epox LCITXIKD bf Eso KCC Fiocco ER pK S lt gt gt CroxI lt gt s Endpoint Network cable Connection Network cable Network 2twised pair shielded point 2 twised pair shielded min 0 5mm Network min 0 5mm Pair 1 A B Pair 2 Gnd Max Cable lenath 1KM Pair 1 A B Pair 2 Gnd Connections Supply Vac Vdc see sticker Relay 1 output Cool Heat L OV NC NO oO _ _ _ NEA OLS ie Ns 1 IACI A a J2 J4 J3
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