Operating instructions - llg
Contents
1. C WKL 230 LAU m n o Entleerungshahn n Drain cock P f P Robinet de vidange 8 E U E EH I I CJ CJ 2 Niveauanzeige Einf llstutzen Druckanzeige Temperaturanzeige und Regler Netzschalter Level indication Filling nozzle Pressure indication Temperature indication and Mains swich Indication niveau Tubulure de remplissage Affichage digital de la controller Interrupteur g n ral pression Affichage de temp rature et r gulateur Bypass Ventil Bypass valve Venne bypass Pumpenstutzen Pump nozzles Tubulures de pomp Alarmkontaktausgang Alarm contact ouput Contact alarme AAA AAA SA VUUUUUUULUUUUUUUULUU UUUUUUUUDUUUUUUUUUU UUUUUUUUUUUUULG Entleerungshahn geschlossen Drain cock closed Robinet de vidange m I teo auBer except sauf WK 500 WK 502 WKL600 WKL 603 WKL 700 WKL 703 QGnnnnnnnnnnnnnnnnnnnnnn2. eyes ats 21 3 2 3 4 Write commands setpoint transfer to the thermostat 22 3 2 3 5 Read commands data requested from the thermostat 23 3 2 8 6 Error messages senescit te de e oe dea e e e e ac ne dV ne de 23 3 2 3 7 Driver software for LABVIEWS cer EE t dote ug mds 23 3 2 4 Flow control 1 5 24 4 SAFETY DEVICES AND WARNING NOTES 1 enin nnn nnn nnn nnn 25 4 1 Safety COVICCS PET EP tute 25 4 2 Warming c 25 5 BATH LIQUIDS AND HOSE CONNECTION seen 26 Casin Du 26 5 2 Hose connections by the metre U 27 6 UNPACKING ASSEMBLY AND SETTING UP J J J J J J 28 7 FILLING AND CONNECTION OF EXTERNAL CONSUMING DEVICES 29 8 STARTING UP R 30 Soc MAINTENANCE 8 5349289 5 2 9 4 3 02 32 9 1 Maintenance of the refrigeration u u u uuu uuu uuu uu uu u 32 9 2 T
3. UU est E mH eV UUUUUUULDULJUUUUUUUU e Only units with a water cooled condenser only with W in type designation YAWE0019 05 06 02 11 LAUDA water circulation coolers WK WKL WK L 7000 W WK L 10000 W Niveauanzeige Einf llstutzen Druckanzeige Level indication Filling nozzle Pressure indication Indication niveau Tubulure de remplissage Affichage digital de la pression L Temperaturanzeige und Regler Netzschalter Temperature indication and Mains switch controller Interrupteur g n ral Affichage de temp rature et r gulateur Alarmkontaktausgang Bypass Ventil Wasser Zulauf Wasser Abflauf Pumpenstutzen Entleerungshahn Alarm contact ouput Bypass valve Water inlet Water outlet Pump nozzles geschlossen Contact alarme Vanne bypass Arriv d eau Sortie d eau Tubulures de pomp Drain cock closed YAWE0019 05 06 02 12 Robinet de vidange ferm 3 3 1 LAUDA water circulation coolers WK WKL Basic construction and technical description Standard version All Series WK water circulation coolers have a refrigeration system in the lower part of the unit employing a sealed compressor air cooled or water cooled condenser with refrigerant R 134a resp R 404 A to cool the liquid in the liquid tank through an evaporator In case of water cooled version the required cooling water flow is optimized in dependence
4. buffer overflow ERR_5 Syntax error in value ERR_6 Illegal value ERR_38 More than 20 changes of setpoint per hour 3 2 3 7 Driver software for LABVIEW An individual easy to use control and automation software for operating the ECOLINE INTEGRA and WK AWKL units be programmed with the aid of the National Instruments program development tool LABVIEW http sine ni com apps we nioc vp cid 1381 amp lang US In order to make program operation possible on the RS 232 RS 485 interface LAUDA provides drivers specially designed for LABVIEW which can be downloaded free of charge under www lauda de spec e htm YAWE0019 10 06 02 23 LAUDA water circulation coolers WK WKL 3 2 4 Flow control instrument Option 5 In the return line for the heat carrier a paddle flow control instrument is installed The contact is connected to the backside flanged 3 pole plug The contact closes at Q gt approx 5 L min with WK 500 WK 502 and WK 1200 WK 10000 W and Q gt approx 10 L min with WKL 7000 WKL 10000 W 2 Alarmcontact Contact of standard Flow control instrument max 30V 1A Use shielded lines Connect shielding with connector housing Cover unused plug lt connections with protecting caps Coupler socket Cat No EQD 047 YAWE0019 05 06 02 24 4 1 4 2 LAUDA water circulation coolers WK WKL Safety devices and warning notes Safety devices All cooling circuits are equipped with an overpressure m
5. 0106 Units conform to EU Guideline 89 336 EWG EMC and 73 23 EWG low voltage and carry the CE mark 230 V 50 Hz or 230 400 V SNPE 50 Hz Class according to B B EMC standards 61326 1 Notice only valid for EU countries j j j e am 50Hz Tue LWG163 LWG138 wee 230V 60Hn LW 284 Team ee 230v 60 2 e J Lo 135 LWGi36 230 400V 3 NIPE 50Hz ae LWG236 Pump 5 5 bar 40 50Hz 3 LWZ031 1 LWZO31 1 JL Lwz03231 LWZ 032 1 Pump 5 5 bar 40L min 60Hz 3 LWZ031 LWZ 031 2 LWZ 032 2 Lwz 032 2 Serial Interface LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 RS 232 485 galv sep Flow control instrument 5 LWZ035 12035 LWZ035 LWZ035 LWZ035 1 2 035 see 4 2 We reserve the right to make technical alterations YAWEO019 05 06 02 6 LAUDA water circulation coolers WK WKL P WK4600 WK4600W WK7000 WK7000W WK10000 WK 10000 W Condenser cooling be a ee water Temperature outflow Sensor PTC Indication green 7 segment LED display Resolution accuracy Setpoint selection igi iai EE Eff cooling capacity 20 kW with Ethanol at ambient 10 C 34 eon ot J temperature 20 C 5 C 55 163 82 o9 aa jis so 55 v8 Safety devices Pressure switch Winding temperature control Level indication al
6. 127 addresses The address must always have 3 digits A000 to A127 The command from the computer must be terminated with CR The response of the thermostat is always terminated with CR CR Carriage Return Hex 0D YAWE0019 10 06 02 21 LAUDA water circulation coolers WK WKL Example Transfer of setpoint 30 5 C to the thermostat Computer Thermostat A015_OUT_SP_00_30 5 CR e A015 OK CR 3 2 3 4 Write commands setpoint transfer to the thermostat OUT SP 00 XXX XX Setpoint transfer with max 3 digits before decimal point and max 2 decimal digits behind The second place after the point is rounded off Response from thermostat OK or in case of error ERR X RS 485 interface e g A015 OK or in case of error A015 ERR X Following a correct setpoint transfer the interface module in the thermostat responds immediately with It then transfers the new setpoint to the controller This may take several seconds During this time the response to the read command STAT has the fifth digit set to 1 As soon as the setpoint has been accepted by the controller the digit changes to 0 This status should always be checked on a change in setpoint in order to ensure that the controller operates on the new setpoint gt For use also blank character Transfer of the setpoint to the thermostat can be performed up to 20 times per hour If setpo
7. C and are with temperatures around 0 C more efficient than comparable WK devices are WKL 230 Very compact desk top unit with working temperature range to 9 9 lt WKL 600 WKL 700 WKL 900 Desk top units to 25 lt 10 C and or 20 C with 2 stage pump or 1 bar WKL 603 WKL 703 WKL 903 Desk top units to 20 C 5 C and or 15 C with powerful side channel pump with max discharge pressure of 3 2 bar WKL 1200 WKL 2200 Floor standing models in the middle performance range with working temperature range to 9 9 C 3 2 bar Pumps and adjustable bypass for the pressure decrease WKL 3200 WKL 4600 Floor standing three phase alternating current devices with working temperature range to 9 9 C and 3 2 bar pump WKL 7000 WKL 10000 Very efficient devices with working temperature range to 30 C and high powerful pump max 6 bar max 60 L min WKL 1200 W to WKL 10000 W only with W in type designation Powerful devices with water cooled condenser YAWE0019 05 06 02 14 LAUDA water circulation coolers WK WKL Pump characteristics LAUDA ET 0 WKL 230 40 WKL 603 WKL 703 WKL 903 WK 502 WK 500 WKL 600 WKL 700 WKL 900 WK 1400 WK 2400 L min ypass closed ypass max 2 5 bar ypass max 15 bar L min WK 1200 W WK 2200 W WK 3200 W WK 4600 W WK 7000 W WK 10000 W WKL 1200 W WKL 2200 W WKL
8. Ethanol at ambient 10 dc os Igd E Wy temperature 20 C 5 C lois Joa Jos Jos oc 0 5 Pressure switch Winding temperature control Level indication adjustable alarm contact max 30V 2A Pump cuit mas 30 33 40 40 30 30 1 2 2 3 2 3 2 1 1 Pump connections M 16x1 M 16x1 34 G 34 G 34 G 34 for tubing i d 10 72 10 72 15 4 15 4 15 4 15 4 bar analogue 0 6 Adjustment ed bypass for limitation Filing capacitymax Juy 12 Overall dimensions B x T XH mm 350x480x Se E mE 595 715 ES ER os kg las La Los Protection to DIN 40050 IP 32 32 B4 32 32 2 32 B 32 230 50 230 50 230 50 230 50 230 50 230 50 Power consumption kW Protection class 1 E to DIN VDE 0106 Units conform to EU Guideline 89 336 EWG EMC and 73 23 EWG low voltage and carry the CE mark 230V 50Hz Class according to B B B EMC standards 61326 1 Notice only valid for EU countries 230V 50Hz LWG132 LWG 140 LWG133 LWG137 LWGi134 LWG 138 230V 60Hz LWG 232 LWG233 LWG237 LWG234 LWG 238 Pump 5 5 40 L min 50Hz 3 LWZO03t LWZO031 1 Jem Pump55bar40L mn 60Hz 3 LWwzo34 2 02031 2 Lu Serial Interface LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 RS 232 485 galv sep Flow control inst
9. SE LN B Protection to 400501 Ia ez pas Is a 32 32 Mainis connection V Hz 230 400 230 400 230 400 230 400 230 400 230 400 3 N PE 50 3 N PE 50 S N PE 50 Laure 50 50 50 Power consumption Protection SC 1 according to T VDE 0106 a conform to EU Guideline SE EMC and 73 23 EWG low voltage and carry the CE mark 230 V 50 Hz or 230 400 V 3 N PE 50 Hz Class according to EMC standards 61326 1 Notice only valid for EU countries 230V 3 PE 60Hz LWG156 LL Le Lu le 230 400V 3 N PE 50Hz LWG256 LWG 257 LWG 246 LWG 248 LWG 250 LWG 252 440 480V 3 PE 60Hz 646 LWG 648 LWG 650 LWG 652 Optional Enlarged temperature LWZ 030 LWZ 030 range 25 C Pump 5 5 bar 40 L min 50Hz LWZ 032 1 LWZ 032 1 Pump 5 5 bar 40 L min 60Hz LWZ 032 2 LWZ 032 2 Serial Interface LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 RS 232 485 galv sep Flow control instrument LWZ 035 LWZ 035 LWZ 036 LWZ 036 LWZ 036 LWZ 036 see 4 2 We reserve the right to make technical alterations YAWE0019 05 06 02 10 LAUDA water circulation coolers WK WKL
10. a 5 x 20 fuse 3 phase units have in addition a Neozed control fuse and 3 Neozed compressor fuses This information only refers to units of mains supply 230 V 50 Hz or 230 400 V S N PE 50 Hz Fuse values for other units are to be seen on the circuit diagram or the components list The fuses in the control circuit are accessible after removing the right hand side panel Control fuse 5x 20 F 0 2 Ref No EEF 002 1x on each model Control fuse Neozed 6A Ref No EES 052 1 off on WK 3200 WK 4600 WKL 3200 WKL 4600 Control fuse Neozed 10A Ref No EES 053 3 off on WK 3200 WK 4600 WKL 3200 WKL 4600 In case of pump troubles on units with three phase alternating current WKL7000 WKL 10000 W test whether the motor safety switch has released The safety switch can be restored after removing of the right sidewall YAWE0019 05 06 02 32 LAUDA water Circulation coolers WK WKL The immersion pump can readily be removed after taking off the side parts and cover We therefore recommend that the pump alone is returned in case of a fault not on WK 230 9 3 Repair and disposal instruction The refrigeration circuit is filled with refrigerant HFKW R 134 a or R 404 A Repair and disposal must only be carried out by a qualified refrigeration technician Type of refrigerant and filling amount are indicted on the label in the device 9 4 Cleaning The unit can be cleaned with water with the addition of a few drops of a detergent washi
11. on off Address 50 For closing the device proceed reverse Put the sidewall onto the bottom plate Press the sidewall down until it engages into the bottom plate Fasten the ground cable at the side wall again Before putting in the screws it may be necessary to raise or displace the sidewall a little bit 4 YAWE0019 25 07 02 18 LAUDA water circulation coolers WK WKL 3 2 3 2 RS 232 interface Connecting cables and interface test Computer Thermostat Signal Ground with hardware handshake for connecting a thermostat to the PC use 1 1 cable and not a null modem cable without hardware handshake the computer PC must be set to the operating mode without hardware handshake Pins 7 and 8 on the thermostat connector must be connected together gt Use screened connecting cable Connect screen to connector case The connections are isolated from the remainder of the electronics Any pins not in use must not be connected When a PC is connected up the RS232 interface can easily be tested using the Microsoft Windows operating system On Windows 3 11 with the Terminal program on Windows 95 with the Hyper Terminal program Protocol gt The interface operates with 1 stop bit no parity bit and 8 data bits Transfer rate either 2400 4800 9600 factory setting or 19200 baud as selected The RS232 interface can be operated with or witho
12. reserve the right to make technical alterations YAWE0019 05 06 02 9 LAUDA water circulation coolers WK WKL et WKL 4600 WKL 4600 W WKL 7000 WKL 7000 W WKL 10000 WKL 10000 W Working temperature range 10 40 10 40 25 40 25 40 25 40 25 40 EE Ambient temperature e C 5 40 5 40 5 40 5 40 5 40 5 40 Indication ae green 7 Segment LED Display 0 5 Resolution gt 10 lt 10 Setpoint selection Cen bigis bigis Diar bigis Temperature accuracy 0 5 Control push pull control with solenoid e Eff Cooling capacity 20 46 deas 70 85 J J 100 13 O with Ethanol at 10 C gt ks ambient 5 322_____ EE EE EE KC 9 9h _ temperature 20 C 0 5 10 15 20 25 30 C fe seen Safety devices Pressure switch Winding temperature Level indication adjustable alarm contact max 30 V 2A re EE Discharge pressure max 32 32 impe lee _ Pump connections G 34 EEN G 1 1 4 G 1 1 4 G 1 1 4 G 1 1 4 for tubing LW 15 94 15 94 20 1 20 1 20 1 20 1 Supply pressure Indication Range analogue 0 6 Adjustment E for pressure SE Filling capacity max u C Overall dimensions B x T x H C 550x650x 550x650x CM ru FM TRA rr TEN o n 11 EC Gees sss kg
13. the CE mark 230 V 50 Hz or 230 400 V 3 N PE Hz Class according to EMC standards 61326 1 Notice only valid for EU countries Re No dice E T S am 50Hz Let LWG 142 LWG 143 LWG144 LWG159 LWG 160 230V 60Hz LWG241 LWG242 LWG243 LWG244 Se Interface w 033 033 ry 033 m 033 RS 232 485 Flow control Instrument 5 LWZ034 LWZ034 LWZ034 LWZ034 see 4 2 We reserve the right to make technical alterations YAWE0019 05 06 02 8 LAUDA water circulation coolers WK WKL Type S WK 1200_ WKL 1200 W_ WKL 2200_ WKL 2200 W WKL 3200_ WKL 3200 W Working temperature range Condenser cooling Jet Juste jar waer ar Jee 5 40 Temperature outflow Sensor K PTC Indication accurac green 7 Segment LED Display 0 5 Resolution gt 10 lt 10 Temperature accuracy Contrl Compr ON OFF with stop interval monitoring Eff Cooling capacity 20 C with Ethanol at 10 C ambient 5 C temperature 20 C 0 5 C Option 2 15 C 20 C 25 C Safety devices Pressure switch Winding temperature control Level indication adjustable alarm contact max 30 V 2A Pumpouputma Jm 40 a Jm Ja jo Discharge pressure max Pump connections EEN EEN EEN EEN G34 G34 for tubing I W 15 4 15 94 15 94 1
14. 3200 W WKL 4600 W ypass closed L min WKL 7000 W WKL 10000 W YAWE0019 05 06 02 LAUDA water circulation coolers WK WKL Refrigeration and tempering circuit diagram Alarmkontaktausgang 15N Alarm contact output 15N Contact alarm 15N Bedieneinheit mit Regler Operating device with controller Partie de commande avec r gulateur Druckanzeige 1 Pressure indication 1 Affichage digital de la pression 1 Externer Verbraucher External consumer Consommateur externe Bypass Ventil SI Bypass valve 1 anne bypass 1 F hler Probe W rmetauscher Heat exchanger Echangeur thermique K tenggregat Cooling uni Unite de refroidissement Entleerung Drain auBer except sauf WK 500 WK 502 WKL 600 WKL 603 WKL 700 WKL 703 Kaltekreislauf gt Anhang Scheme cooling circuit Annex Sch ma de r froidissement gt YAWE0019 05 06 02 16 LAUDA water circulation coolers WK WKL 3 2 Options The options installed in the device are to be recognized by a label next to the type designation plate 3 2 1 Enlarged temperature range to 25 C Option 2 The device is modified so that the lower limit of the working temperature range is expanded to 25 C 3 2 2 High power pump Option 3 A high power 2 stage pump with maximum values 5 5 bar 40 L min is installed Pump characteristics chapte
15. 4 Ref No Ref No Ref No Ref No Ref No Ref No Ref No LWZ 009 LWZ 010 LWZ 022 LWZ 024 HKO 025 LWZ 016 LWZ 023 BESTATIGUNG CONFIRMATION CONFIRMATION LAUDA An To A LAUDA Dr R Wobser LAUDA Service Center Fax 49 0 9343 503 222 Von From De Firma Company Entreprise StraBe Street Rue Ort City Ville Tel Fax Betreiber Responsible person Personne responsable Hiermit bestatigen wir daB nachfolgend aufgef hrtes LAUDA Ger t Daten vom Typenschild We herewith confirm that the following LAUDA equipment see label Par la pr sente nous confirmons que l appareil LAUDA voir plaque signal tique Typ Type Type mit folgendem Medium betrieben wurde was used with the below mentioned media a t utilis avec le liquide suivant Dar ber hinaus best tigen wir da das oben aufgef hrte Ger t sorgf ltig gereinigt wurde die Anschl sse verschlossen sind und sich weder giftige aggressive radioaktive noch andere gefahrliche Medien in dem Gerat befinden Additionally we confirm that the above mentioned equipment has been cleaned that all connectors are closed and that there are no poisonous aggressive radioactive or other dangerous media inside the equipment D autre part nous confirmons que l appareil mentionn ci dessus a t nettoy correctement que les tubulures sont ferm es et qu il n y a aucun produit toxique agres
16. 5 9 15 94 15 9 Supply pressure Indication Range bar analogue 0 6 Adjustment adjustable bypass for pressure limitation Filling capacity mx fe s zg Seg Ss _ ls Overall dimensions B x T xH 450x550x 450x550x 450x550x 450x550x 550x650x 550x650x 790 790 790 790 970 970 de Je kg Protection to DIN 40050 P232 32 32 32 32 32 V Hz 230 400 3 N PE 50 Mains connection 230 400 230 400 230 400 230 400 230 400 3 N PE 50 3 N PE 50 3 N PE 50 3 N PE 50 3 N PE 50 1 6 2 2 2 2 2 8 2 8 Power consumption Protection class 1 according to DIN VDE 0106 Units conform to EU Guideline 89 336 EWG EMC and 73 23 EWG low voltage and carry the CE mark 230 V 50 Hz or 230 400 V 3 N PE 50 Hz Class according to EMC standards 61326 1 Notice only valid for EU countries 230V 50Hz LWG4153 LWG 166 LWG154 LWG167 230V 3 PE 60Hz _ C j C ewes JL 230 400V 3 N PE_50Hz L LWG25 LWG 268 Optiona T II all range 25 C 3 12031 1 LWZ oa 142 031 1 LWZ 031 1 LWZ 032 1 LWZ032 1 3 12031 2 112 031 2 142 031 2 Is 031 2 Lwz 032 2 LWZ0322 5 LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 035 LWZ 035 LWZ 035 LWZ 035 LWZ 035 LWZ 035 Pump 5 5 bar 40 L min 50Hz Pump 5 5 bar 40 L min 60Hz Serial Interface RS 232 485 galv sep Flow control instrument see 4 2 We
17. 9 05 06 02 27 LAUDA water circulation coolers WK WKL 6 Unpacking assembly and setting up Goods are packed carefully largely preventing transport damage If unexpectedly some damage is visible on the equipment the carrier the postal authority or the railway has to be informed so that it can be inspected Standard accessories 1 Bath cover with filler opening Cat No EZV 070 WKL 230 1 Plug for filler opening Cat No EZV 086 all units except WKL 230 2 Nipples 13 mm dia Cat No HKO 026 WK 500 WK 502 WKL 600 WKL 603 WKL 700 WKL 703 WKL 900 WKL 903 2 Screwed rings Cat No HKM 032 WK 500 WK 502 WKL 600 WKL 603 WKL 700 WKL 703 WKL 900 WKL 903 2 Nipples 34 with fitting Cat No EOA 004 WK 1200 WK 10000 W WKL 1200 WKL 4600 W 2 Nipples 1 with fitting Cat No EOA 036 WKL 7000 W WKL 10000 W 2 hoses 12 4m each with quick release coupling and Cat No LWZ 025 hose clamps at WK L 7000 W only in case of water cooled devices 2 hoses 34 4m each with quick release coupling and Cat No LWZ 026 hose clamps at WK L 10000 W only in case of water cooled devices Operating Instructions The unit should be set up with the operating panel at the front the ventilation grille for the refrigerator grille in lower part must not be obstructed Ensure minimum distance of 0 5 m between grille and wall see 4 2 Water cooled version The condensation and motor heat is dissipated by a w
18. LAUDA Operating instructions LAUDA Water Circulation coolers WK 500 WK 502 WK 1200 W WK 1400 W WK 2200 W WK 2400 W WK 3200 W WK 4600 W WK 7000 W WK 10000 W WKL 230 WKL 600 WKL 603 WKL 700 WKL 703 WKL 900 WKL 903 WKL 1200 W WKL 2200 W WKL3200 W WKL 4600 W WKL 7000 W WKL 10000 W LAUDA DR R WOBSER GMBH amp CO KG P O Box 1251 D 97912 Lauda K nigshofen from serie A10 Phone 449 0 9343 503 0 01 02 Fax 49 0 9343 503 222 YAWE0019 e mail info lauda de Internet http www lauda de LAUDA water Circulation coolers WK WKL 1 BRIEF OPERATING INSTRUCTIONS 4 2 TECHNICAL 5 3 BASIC CONSTRUCTION AND TECHNICAL DESCRIPTION 13 Bel Standard Version ics sc ace eu ue Sack ace cere Set dace iat aint detent q Na aqa asas qa 13 Bis er E 17 3 2 4 Enlarged temperature range to 25 G Option 2 I nnns 17 3 2 2 High power pump 9 tto oo onte eta da et eta 17 3 2 3 Serial digital Interface RS 232 RS 485 Option 4 nennen nnns 17 2S GonfigultallOD pibe iit det ad hi denied oder einem 17 3 2 3 2 RS 232 interface iiec a t ERU P ana Ga DEI d UT Peta 19 23 2 9 3 HS 485 Interface nte eret ee reiten Ue oerte Pee e epe fer
19. arm contact 30 V 2 Discharge pressure max Pump connections EEN EEN G34 G 34 G 34 G 34 for tubing L W 15 84 15 34 15 34 15 3 5 15 34 15 34 Supply pressure Indication Range bar Analogue 0 6 Adjustment bypass for pressure limitation Filling capacity max Overall dimensions B x T x H co Ge See Sen E Se NN m 970 1120 970 E el um he uz Je Jam _ Protection to DIN 40050 to DIN 40050 TP ipso e IP 32 IP 32 IP 32 IP 32 IP 32 Mains connection V Hz 230 400 230 400 230 400 230 400 230 400 230 400 3 N PE 50 3 N PE 50 3 N PE 50 3 N PE 50 3 N PE 50 3 N PE 50 Power consumption Protection class 1 E n to DIN VDE 0106 Units conform to EU Guideline 89 336 EWG EMO and 73 23 EWG low voltage and carry the CE mark 2230 V 50 Hz 230 400 V See 50 Hz Class according to EMC standards 61326 1 Notice only valid for EU countries 230V 3 PE_60Hz jiwa Jee LL Lk TL O 230 400V 50Hz LWG236 LWG258 LWG245 LWG 247 LWG 249 LWG 251 440 480V 3 PE 60Hz Jun 645 LWG 647 LWG 649 LWG 651 Pump 5 5 bar 40L min 50Hz 3 LWZ032 1 LWZ 032 1 LWZ 032 1 LWZ 032 1 LWZ032 1 LWZ 032 1 Pump 5 5 bar 40 60Hz 3 LWZ032 2 LWZ 032 2 LWZ 032 2 LWZ 032 2 LWZ032 2 LWZ 032 2 Serial interface LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 LWZ 033 RS 232 485 galv sep Flow control instrument 5 LWzos
20. at WKL 7000 W and WKL 10000 W Check that the tube connections have been made according to Item 1 5 and that the unit has been filled according to Item 1 4 Switch on the mains switch I The temperature indicator on the control panel shows the current bath temperature Display and modification of the set point Press key for approx 2 s gt Set is displayed Then press again for a short time the set point is indicated Loa flashes Set the temperature with the keys V or Memorizing is done by pressing the key approx 2 s or automatically after 10 s The indication K1 shows if the compressor is running i e if the unit is being cooled down or not The pressure gauge shows the pump pressure at the outflow connection outlet of the unit The pressure can be adjusted with the bypass valve at the back of the unit see 8 4 Not on WKL 230 WK 500 WK 502 WKL 600 WKL 603 WKL 700 und WKL 703 WLK 900 WKL 903 YAWE0019 05 06 02 4 LAUDA water Circulation coolers WK WKL 2 Technical Data Dee k 9 plb bj j OmPE amp IIT LII ALAIII IIIIIII I Y ESE P Een Condenser cooling a ja far me water 5 40 Temperature outflow sensor PTC Indication green 7 I LED TM Resolution accuracy 0 1 0 3 0 1 0 3 Setpoint adjustment Digital TE Digital Digital og TN Temperature accuracy 0 5 0 5 0 5 Compr On Off with stop interval mpm Etf cooling capacity 20 kw jos fos bs is ha Ji with
21. ater cooled countercurrent heat exchanger Connect the tubing The connections for water inlet from water tap and water outlet to the drain are located on the rear of the equipment at the lower side Water inlet on the left and outlet to the drain on the right if one looks on the device from behind The cooling water amount is adapted to the requirement in dependence of the condenation pressure Protect tubing with hose clamps against slipping off Lock the front castors where appropriate Check that the drain cock is closed YAWE0019 05 06 02 28 LAUDA water Circulation coolers WK WKL 7 Filling and connection of external consuming devices Fill the unit with bath liquid which is suitable for the operating temperature in accordance with Section 5 ATTENTION Water must not be used as heat carrier below 5 C In case of operating temperatures below 5 C please use Kryo 30 for example section 5 1 When filling for the first time the pressure connection should be left open to assist in purging the pump otherwise the pump may be permanently damaged Remove the plug on the filler opening at the front The use of a funnel may be convenient for filling When starting up for the first time the bath should be filled as high as possible resp up to the maximum level indication After the external circuit has been filled up it may be necessary to add further liquid Level indication with red marks to determine maximum and minimum l
22. bing int diam Temp Range C Usable Ref No mm EPDM tube 9 10 to 120 all bath liquids RKJ 111 uninsulated except for Ultra 350 and mineral oils WKL 230 all units with M 16x1 and 11 mm connector EPDM tube 12 10 to 120 all bath liquids RKJ 112 uninsulated except for Ultra 350 and mineral oils all units with a max pump pressure of 1 bar with M 16x1 and 18 mm connector EPDM tube 12 60 to 120 all bath liquids LZS 021 insulated except for Ultra 350 and mineral oils all units with a max pump pressure 1 bar with M16 x1 and 13 mm connector Rubber tubing fibre vg 40 to 80 all bath liquids RKJ 031 strengthened all units with M16x1 and 13 mm connector Rubber tubing ECH 40 to 80 all bath liquids RKJ 032 fibre strengthened all units with 34 connector Rubber tubing 1 40 to 80 for all bath liquids RKJ 033 fibre strengthened all units with 1 connector Insulation 23x10 60 to 150 Insulation for RKJ 031 RKJ 009 Insulation 29x10 60 to 150 Insulation for RKJ 032 RKJ 013 Insulation 36x10 60 to 150 Insulation for RKJ 033 RKJ 017 Hose clamp 10 16 suitable for RKJ 111 EZS 012 Hose clamp 16 27 suitable for RKJ 112 RKJ 031 EZS 032 LZS 021 Hose clamp 20 32 suitable for RKJ 032 EZS 015 Hose clamp 25 40 suitable for RKJ 033 EZS 016 EPDM tube not for Ultra 350 and mineral oils Protect tubing with hose clamps against slipping off YAWE001
23. e liquid is lower than the chosen alarm switching point the contact is closed which means that contacts 1 and 2 of the plug connection 15N are closed Maximum contact load 30 V 2 A 1 QU 3 Socket coupler Ref No EQD 047 2 Materials in contact with the cooling liquid WK 230 stainless steel EPDM WK 500 WKL 10000 stainless steel copper brass ceramics plastics perbunan YAWE0019 05 06 02 13 LAUDA water circulation coolers WK WKL All WK models with working temperature range 0 40 C WK 500 Desk top unit with two stage high grade steel circulating pump with discharge pressure of 1 bar Castors at the rear for the slight handling WK 502 Desk top unit with increased cooling capacity and circulating pump Especially also for the cooling of AAS units WK 1200 WK 2200 Floor mounted devices in the middle performance range with powerful circulating pumps with max discharge pressure of 3 2 bar Adjustable bypass for the pressure decrease 4 castors 2 can be locked WK 1400 WK 2400 Floor mounted devices as WK 1200 and WK 2200 but with two stage high grade steel pump of low noise with max discharge pressure of 1 bar WK 3200 WK 4600 WK 7000 WK 10000 Floor mounted devices with large cooling capacity and 3 2 bar circulating pump designed for three phase current WK 1200 W to WK 10000 W Powerful devices with water cooled condenser All WKL models have a working temperature range expanded under 0
24. evels Link the pump connections at the back of the unit to the external circuit Only pressure tight circuits can be connected to the chiller Switch off the unit before loosening the hose connections The hose couplings do not close automatically ATTENTION In case of lock of the return pipe pressures which destroy glass equipment can occur near devices with max discharge pressure than 1 bar Observe the max permissible pressures of the connected apparatus Concerning suitable tube material please refer to Section 5 In the case of high level external circuits if the pump is stopped and air enters the chilling circuit there is a possibility even in closed circuits that the external volume drains down and the storage bath overflows The dry running of the pump i e operation below minimum liquid level can cause damage to the pump bearings Always ensure maximum cross section in the external circuit nipples tubing external consuming device This results in a larger flow rate and therefore better temperature control Protect the tubes with hose clips against slipping off YAWE0019 05 06 02 29 LAUDA water circulation coolers WK WKL 8 Starting up Connect the unit only to mains socket with protective earth connection PE Check the details on the label against the mains voltage and frequency Switch on the mains switch on the right side of the control panel 1 The digital display shows the current outflow temperatu
25. hermostat fulfills class B when a line gt 100 A is available With unfavorable net circumstances distrubing variations in line voltage can occur Warning The equipment must only be used as intended and described in these Operating Instructions This includes operation by suitably instructed and qualified personnel The units are not designed for use under medical conditions according to EN 60601 1 or IEC 601 1 At regular intervals check the condenser for any dirt deposit and also the level in the bath Sections 7 and 9 1 ATTENTION In case of narrowed or closed circuit pressures which can destroy connected equipment Glass can occur Protect the tubes with hose clips against slipping off Devices with side channel pump all except for WKL 230 WK 500 WKL 600 WKL 700 WKL 900 WK 1400 WK 2400 must never be operated with bath level under minimal level since otherwise the pump bearings are damaged YAWE0019 05 06 02 25 LAUDA water circulation coolers WK WKL 5 Bath liquids and hose connections The operating temperature ranges of the bath liquids and tubings represent general data which may be limited by the operating temperature range of the unit etc 5 1 Bath liquids LAUDA Working Chemical Viscosity Ref No Designation tem Designation kin at Quantity perature Temperature range Former at 20 C mm s designation water deionised water D Kryo309 G1009 Mono 50 25 LZB 109 LZB 209 LZB 309 e
26. int transfer takes place more frequently an error message is produced This protective function prevents writing too frequently to the storage position inside the thermostat which would damage it Permitted data formats XXX _ XE ow o YAWE0019 05 06 02 22 LAUDA water circulation coolers WK WKL 3 2 3 5 Read commands data requested from the thermostat IN_PV_00 Read bath temperature outflow temperature TYPE Read type of unit VERSION Read type of software of the RS 232 485 module STATUS Read equipment status 0 OK 1 error STAT Read error diagnosis response Answer XXXXX o X 0 or 1 sign Fault in the interface module sign Transmission error between interface module and controller sign Alarm contact state plug type connector 15N 0 contact 1 and 2 closed property state 1 contact 1 and 2 opened sign State flow control instead of on plug in connector 15N 0 contact 2 and 3 closed property state 1 contact 2 and opened sign Setpoint transmission from interface module to controller refer to section 3 2 3 4 Write commeands Setpoint transfer to the thermostat For use also blank character i gt The equipment response is always in the fixed decimal format XXX XX or for negative values XXX XX ERR X RS 485 interface e g A015 XXX XX or A015 XXX XX or A015 ERR X 3 2 3 6 Error messages ERR_2 Wrong input e g
27. intervals of 4 to 6 months or more frequently This is best done by blowing compressed air or nitrogen into the ventilation openings for a few minutes It may be useful to unscrew the front grille Transportation and storage Caution In case of frost danger e g Transportation in the winter empty the condenser of water cooled devices For this purpose heat up the bath to 20 C Loosen the hose at the water tap Adjust the setpoint to 0 C and blow compressed air into the water inlet tubing from behind on the left immediately after start of the compressor Put the outlet tubing maximally low so that the device is completely emptied Switch off the device immediately again 9 2 Trouble shooting and safety notes For all other maintenance operation and repairs always pull out the mains plug Repairs on the control unit with the side panel or cover removed must only be carried out by a qualified electrician With unfavourable net circumstances the devices WK 1200 W WK 1400 W WK 2200 W WK 2400 W WKL 1200 W WKL 2200 W can lead to disturbing variations in line voltage These devices are provided for operation at an electricity supply system with a 100 A private connection If domestic areas are fed from the same supply network the customer has to guarantee that these devices are operated only at an electricity supply system that meets these requirements item 4 2 The control circuit of single phase units is protected by
28. ng up liquid using a moist cloth The user is responsible for carrying out an appropriate detoxification of any dangerous material which has been spilled on or in the unit This applies in particular when the unit is passed on to someone else for operation repair storage etc 9 5 Spares ordering When ordering spares please specify the equipment type and number on the label This avoids queries and prevents supply of incorrect goods We shall always be happy to deal with queries suggestions and complaints LAUDA DR R WOBSER GMBH amp CO KG P O Box 1251 D 97912 Lauda K nigshofen Germany Phone 49 9343 503 0 49 9343 503 222 E mail info lauda de Internet http www lauda de YAWEO019 05 06 02 33 LAUDA water circulation coolers WK WKL Accessories for LAUDA water circulation coolers WK 4 way manifold for pump outflow and return each connection can be shut off separately e For units with connections M16x1 vz tubing e For units with connections G3 4 34 tubing For units with connections G94 V2 tubing e For units with connections G1 1 4 4 tubing Nipple for pump connections 211 for tubing 8 10mm for WK 500 WK 502 WKL 600 WKL 603 WKL 700 WKL 703 WKL 900 WKL 903 Nipple for threaded hose coupling G 34 for tubing 1 2 for WK L 1200 4600 Adjustable bypass with pressure display for WK 502 WKL 603 and WKL 703 YAWE0019 05 06 02 VT 1 VT2 VT 3 VT 4 3
29. of the condensation pressure that means the water consumption is dependent on the dissipated capacity It is between 150 and 2500 L h according to device cooling water temperature and load The cooling water temperature must not exceed 25 C Cooling water pressure 2 5 10 bar is necessary Immersion pumps of different capacity circulate the liquid usually water inside the bath and pump it outside and through the external equipment to be cooled The types WK 7000 W WK 10000 W und WKL 7000 W WKL 10000 W have a separate pump that charges a plate heat exchanger Through that the cooling capacity is independent of the discharge flow through the external circuit A temperature probe inside the bath measures the temperature which is indicated digitally The temperature setpoint is selected digitally The controller controls cooling by switching the refrigeration compressor on and off from WK 4600 through magnetic valves in push pull circuit An intelligent delay logic prevents the compressor being overloaded due to excessive switching frequency In the configuration level an alarm switching point can be adjusted section 8 When exceeding this value the luminous diode K2 goes out and the neutral contact of the plug connection alarm at the back of the unit opens This means that the alarm contact is open even in case the unit is switched off The contact is closed with delay after switching on the mains switch If the temperature of th
30. onitor which switches off the compressor if the condensation pressure is excessive In addition all compressors are fitted with a combined overtemperature overcurrent cut out which interrupts the compressor current and switches on again after cooling down All pumps are fitted with winding temperature monitors or overcurrent circuit breaker One or more fuses one main switch with circuit breaker or automatic circuit breakers depending on the type of unit are provided to protect the electrical equipment Warning notes It is essential that you observe the following instructions Connect the equipment only to a socket with protective earth connection PE Check the data on the rating label against the actual supply voltage and frequency Any work on the unit must only be carried out by a qualified electrician and with the supply plug disconnected except for cleaning the condenser behind the front grille During starting up it is essential to follow the sequence according to Section 6 7 and 8 Values for temperature variation and indicating accuracy apply under normal conditions according to DIN 12876 High frequency electromagnetic fields may under special conditions lead to unfavourable values This does not affect safety Class A according to EMC standard EN 61326 1 Operation only at industrial areas Class B according to EMC standard EN 61326 1 Operation suitable for domestic areas Class B according to EMC standard EN 61326 1 T
31. ox 2s gt Set is displayed Then press SET again for a short time gt the set point is indicated Loa flashes Setting is done by means of the keys LA or The green LED K 1 indicates whether the compressor is switched on and or with models WK 4600 WK 10000 W and WKL 4600 WKL 10000 W whether the cooling circuit is switched to cooling According to the model minimum rest periods delay times between 10 s and 120 s are programmed for the limitation of the switching frequency YAWE0019 05 06 02 30 LAUDA water Circulation coolers WK WKL e Adjustment of the switching point for the alarm contact Switching point is set in factory at 40 C Any value within the total temperature range of the device can be adjusted The setting occurs in the configuration level Press key SET and hold After approx 10 s St 1 is displayed Press key LA 1x It appears st 2 Shortly press SET Lk2 flashes Adjust new alarm switching point with P vi Confirm with 2s st 2 is displayed After approx 10 s the unit is put again into the normal state actual value display CAUTION Do not change other configuration values YAWE0019 05 06 02 31 LAUDA water circulation coolers WK WKL 9 Maintenance 9 1 Maintenance of the refrigeration unit The refrigeration unit operates largely maintenance free If the unit is being operated in a dusty atmosphere the condenser of the refrigerator has to be cleaned at
32. r 9 The cooling capacity is reduced by approx 200 W 3 2 3 Serial digital Interface RS 232 RS 485 Option 4 In the thermostat an extra module is installed which converts the RS 232 485 commands and transmits them to the controller 3 2 3 1 Configuration The factory setting of the baud rate is 9600 and the address is set to 000 For a different configuration of the digital interface the cover panel on the right has to be opened Only open devices which are equipped with this option Before opening switch off the unit and pull out the power plug Remove the screws of the cover on the right side 1 Separate the ground cable from the housing 2 Move the top of the cover slightly away from the unit and pull out the cover upwards 1 2 YAWE0019 25 07 02 17 LAUDA water circulation coolers WK WKL A 4 way switch and an 8 way switch are located in the upper part of the thermostat The 4 way switch is used to set the interface type RS 232 or RS 485 and the baud rate 1 2 3 4 not used Type of interface off RS232 on RS485 Switch Baud rate 2400 4800 9600 19200 1 off on off on 2 off off on on The 8 way switch is used to set the RS 485 address of the thermostat 112131415 16178 not used Ey Address from 0 to 127 binary coded Switch 7 6 5 4 3 2 1 e g off on on off off
33. re With types of WKL 7000 W and WKL 10000 W the pump is driven by a three phase alternator motor The sense of rotation of the three phase alternating current connection must be observed If the discharge pressure display does not indicate any pressure the sense of rotation of the three phase alternating Caution Must only be carried out by electro specialist If no bath liquid is being pumped although the liquid level is sufficiently high the presence of an air pocket stops the pump filling with liquid The remedy is to vent the external circuit at its highest point Close the bypass valve clockwise on the back of the unit until the maximum required pressure in the external circuit has been obtained In the case of circuits not affected by pressure the valve should be closed completely The resulting outflow pressure is indicated on the pressure gauge located on the front of the unit This provides an indication of the flow rate and possible faults Under normal conditions the bypass valve of models WK 1400 and WK 2400 is always closed as the maximum pressure is 1 0 bar The following method may be used to prevent a certain pressure being exceeded even if the external circuit gets blocked Close off the outflow make a kink in the tubing and then set the maximum permitted pressure with the bypass valve Open the external circuit but do not alter the bypass valve setting Display and modification of the set point Press key for appr
34. rouble shooting and safety notes esee u uu u uuu uuu uuu uu uu u 32 9 3 Repair and disposal instruction U U 33 LE Mer mee 33 9 5 Spares O rderifig emm 33 YAWE0019 05 06 02 3 LAUDA water circulation coolers WK WKL 1 Brief operating instructions Even if you find these brief instructions initially sufficient please read the subsequent sections especially Section 4 Safety devices and warning notes Check the Water circulation cooler and accessories during unpacking for any transport damage and if necessary inform the carrier Assemble the unit according to Section 6 and add extra items as appropriate When setting up the unit there must be a spacing of at least 0 5 m between the grills and any object which could interfere with ventilation With the pump connections open fill the bath up to the top mark on the level indication in the case of WK 230 up to about 20 mm below the bath cover plate Check that the drain valve on the back wall is closed Connection of the hoses to the pump connections Connect the connecting hose to the external device Protect the tubes with hose clips against slipping off Use only tubes suitable for the liquid used and for the maximum operating pressure Check the supply voltage against the details on the label Insert the mains plug Test the sense of rotation of the three phase alternating current connection
35. rument 5 LWz034 LWZ034 LWz035 LWZ035 LWZ035 LWZ 035 see 4 2 We reserve the right to make technical alterations YAWE0019 05 06 02 5 LAUDA water circulation coolers WK WKL ERR ECH WK 2400 foe enn Er me nie E Temperature outflow sensor Indication green 7 mo LED display Resolution accuracy rej 0 0 7 0 1 30 3 04 2z03 0 1 0 3 10 1 30 3 0 1 30 3 Setpoint selection Jo foara es Temperature accuracy 1 Compr On Off with stop interval monitoring Eff cooling capacity 20 kW with Ethanol at ambient 10 C 167 qha ss temperature 20 C 5 6 s a ju fs fs oc ae Me ig a ue cM s peau cw Pressure switch Winding temperature control Level indication adjustable alarm contact max 30 V 2A pe Pump connections G 34 2 S for tubing 15 34 is 34 34 15 4 15 4 Supply pressure Indicatiory Range bar analogue 0 6 IE c LT bypass for E ud ee Filling capacity capacity max Overall dimensions B x T x H IT FON rM 5 amm rm M Le kg eo h Protection to DIN 40050 to DIN 40050 el P32 z P32 2 IP 2 IP 32 IP 32 Mains connection V Hz 230 50 230 50 230 50 230 50 230 400 230 400 3 N PE 50 3 N PE 50 Power consumption Protection class 1 ae to DIN VDE
36. s Lwzoss LWZ035 Lwzoss5 LWZ 035 LWZ 035 see 4 2 We reserve the right to make technical alterations YAWEO019 05 06 02 7 LAUDA water circulation coolers WK WKL Dee 220 Wt 600 WK WHE TW 00 WAL 903 je far far a far s Ambient temperature range Temperature outflow Sensor Indication accuracy green 7 PH LED Display 0 5 Resolution 10 10 Setpoint selection Caen phe s Temperature accuracy ICotol Compr ON OFF with stop interval monitoring Eff Cooling capacity 20 023 foes 1052 07 oss Joos Jos with Ethanol at 10 C ambient 5 0 33 oza Jus temperature 20 d 0 25 5 C Ee EE 10 C loi oo Ju oan Jos 15 C 20 C oo Jon j fos JL 25 C don J jm j de d Level indication aditistabi s alarm contact max 30 V 2A amem T s 12 s ois Bat i a ow 1 Pump connections T 10 J 16x1 M 16x1 M 16x1 M 16x1 M 16x1 M 16x1 for tubing 10 Dei 10 Oe 10 Oe 10 Dei 10 Dei 10 Oe Supply pressure Indicatiory Range bar analogue 0 6 uM DS SESCH for ies SE Ee Filling capacity max capacit Y Gees Gees Eros EH Gees emm wi kg pa ee x ez Power consumption Protealion class L to DIN VDE 0106 Units conform to EU Guideline 89 336 EWG EMC 73 23 EWG low voltage carry
37. sif radioactif ou autre produit nocif ou dangeureux dans la cuve Stempel Datum Betreiber Seal Cachet Date Date Responsible person Personne responsable Formblatt Form Formulaire Unbedenk doc LAUDA DR R WOBSER GmbH amp Co KG Erstellt published tabli LSC PfarrstraBe 41 43 Tel 49 0 9343 503 0 And Stand config level Version 0 1 D 97922 Lauda K nigshofen Fax 49 0 9343 503 222 Datum date 30 10 1998 Internet http www lauda de E mail info lauda de UNBEDENK DOC
38. thylene glycol water Kryo 40 TF 50 Aqueous 8 at 20 C LZB 119 LZB 219 LZB 319 solution of salt VS Destilled or deionised high purity water is corrosive and should only be used with the addition of about 0 1 g sodium carbonate per litre water Otherwise its use may lead to corrosion Q When operating for longer periods at higher temperatures the proportion of water decreases The mixture approaches the properties of pure glycol and becomes flammable flashpoint 128 C The mixture ratio should therefore be checked from time to time against the original mixture e g using a hydrometer For temperatures from 15 to 90 C we recommend a lower ratio of mixture of monoethylene glycol water of approx 3 1 You get this when you dilute Kryo 30 with the same amount of decalcified water Example 10 L Kryo 30 10 L decalcified water results in 20 L with a ratio of mixture of 3 1 When selecting the bath liquid it is to be noted that at the lower limit of the working temperature range a quality loss is to be reckoned on through the increasing viscosity If not required do not use the full working temperature range therefore Ranges of the bath liquids and tubing are general information which can be constricted by the operating temperature range of the devices DIN safety sheets can be requested if required YAWE0019 05 06 02 26 LAUDA water circulation coolers WK WKL 5 2 Hose connections by the metre Type of tu
39. ut hardware handshake RTS CTS The command from the computer must be terminated with CR CRLF or LFCR The response of the thermostat is always terminated with CRLF CR Carriage Return Hex 0D LF Line Feed Hex 0A YAWEO019 01 08 02 19 LAUDA water circulation coolers WK WKL Example YAWE0019 01 08 02 Transfer of setpoint 30 5 C to the thermostat Computer Thermostat OUT SP 00 30 5 CRLF a OK CRLF 20 LAUDA water circulation coolers WK WKL 3 2 3 3 RS 485 Interface Connecting cable 5 SG Signal Ground optional Use screened connecting cables Connect screen to connector case The connections are isolated from the remainder of the electronics Any pins not in use must not be connected A RS 485 bus always requires bus termination in the form of a termination network which ensures a defined rest status in the high resistance phases of bus operation The bus termination is as follows Data Data 330 0 120 Q 530 0 5V H This termination network is usually incorporated on the PC plug in card RS 485 Protocol gt interface operates with 1 stop bit no parity bit and 8 data bits Transfer rate either 2400 4800 9600 Factory setting or 19200 baud as selected The RS 485 commands are always preceded by the device address There is provision for
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