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Sterling stt 1600 Operating Instructions Manual

Dehumidified air dryer with siemens s7 con trol unit
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Op er ating In struc tions
De hu mid ified Air Dryer
STT 1600
with Siemens S7 con trol unit
Ster ling Ma te rial Pro cess ing

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  • Page 1 Op er ating In struc tions De hu mid ified Air Dryer STT 1600 with Siemens S7 con trol unit Ster ling Ma te rial Pro cess ing...
  • Page 2 Please note that our address and phone information has changed. Please reference this page for updated contact information. These manuals are obsolete and are provided only for their technical information, data and capacities. Portions of these manuals detailing procedures or precautions in the operation, inspection, maintenance and repair of the products may be inadequate, inaccurate, and/or incomplete and shouldn’t be relied upon.
  • Page 3 STT 1600 Ster ling Ma te rial Pro cess ing 5200 West Clinton Ave. Mil wau kee, WI 53223 Tele phone: (414) 354-0970 Fax: (414) 354-6421 www.sterlco.com Tech ni cal ser vice: Ser vice de part ment Tele phone: (800) 423-3183...
  • Page 4 STT 1600 Ster ling Ma te rial Pro cess ing re tains all rights to change the in for ma tion in these op er at ing in struc tions at any time with out no tice. We as sume no li a bil ity for any er rors or di rect or in di rect dam age re sult ing in con - text with these op er at ing in struc tions.

  • Page 5: Table Of Contents

    STT 1600 TA BLE OF CON TENTS 1. Gen eral In for ma tion ..........1-1 1.1.
  • Page 6 STT 1600 5. Main te nance ........... . . 5-1 5.1.
  • Page 7 STT 1600 10. Spare parts list ..........10-1 10.1.

  • Page 8: Gen Eral In For Ma Tion

    De hu mi di fied Air Dry er 1. Ge ne ral In for ma ti on » The se ope ra ting in struc tions are ad dres sed to all users of the de vi ce. The se ope ra ting in struc tions must be used by every per son char ged with work on the unit.

  • Page 9: Warn Ings And Sym Bols

    De hu mi di fied Air Dry er 1.1. War nings and sym bols The fol lo wing war nings and sym bols are used in the se ope ra ting in struc tions: » This sym bol in di ca tes dan ger to life! Fa tal or se ri ous in ju ry is pos si ble if the cor re spon ding in struc tions, re gu la tions or war nings are not ob ser ved.

  • Page 10: Ex Pla Na Tions And In For Ma Tion

    De hu mi di fied Air Dry er 1.2. Ex pla na tions and in for ma ti on Va ri ous terms and de sig na tions are used in the se ope ra ting in struc tions to en su re cla ri ty. The re - fo re plea se note that the terms used in the text stand for the cor re spon ding ex pla na tions lis ted be - low.

  • Page 11: Safety In Struc Tions

    De hu mi di fied Air Dry er 2. Sa fe ty in struc tions » The se sa fe ty in struc tions ap ply to all per sons wit hin the ran ge of ac ti on of the equip ment.

  • Page 12: For Your Safety

    De hu mi di fied Air Dry er 2.1. For your sa fe ty Ge ne ral The ope ra ting per son nel of this equip ment must be at least 16 ye ars old. Plea se read the se ope ra ting in struc tions ca re ful ly be fo re ta king into ope ra ti on for the first time. Con tact us should que stions ari se.
  • Page 13 Take care that the de vice is not stand ing on the mains ca ble. This will pre vent dan ger to peo ple and ma te rial! The dry ing cells must be filled with dry ing agent be fore setting-up the dryer (only STT 1600, STT 2400). This will pre vent dam age of ma te rial! Check 5 hours af ter first putt ing into op er a tion that the dry ing cells are sufficiently filled with dry ing agent (only STT 1600, STT 2400).
  • Page 14 De hu mi di fied Air Dry er Main ten an ce Be fo re star ting main ten an ce work, ap point a su per vi sor. In form the re spon si ble per son nel be fo re main ten an ce work on the sys tem is start ed. Cau ti on: Dan ger of ac ci dents! Dis con nect the equip ment from mains supp ly be fo re star ting main ten an ce pro ce du res to en su re that it can not be swit ched on un in ten tio nal ly.

  • Page 15: For The Safety Of The De Vices

    De hu mi di fied Air Dry er 2.2. For the sa fe ty of the de vi ces Ne ver chan ge set tings wit hout ca re ful ly as ses sing the con se quen ces. Use only ori gi nal Ster ling spa re parts. Ob ser ve the main ten an ce in struc tions.
  • Page 16 Check 5 hours af ter first putt ing into op er a tion that the dry ing cells are sufficently filled with dry ing agent (only STT 1600, STT 2400). This will pre vent dam age of ma te rial!

  • Page 17: Start-Up

    STT 1600 3. Start-up » This chap ter is di rec ted at the ope ra tors of the equip ment. This chap ter as su mes ge ne ral skills in dea ling with dry ing sys tems and SPS (PLC) con trol units.

  • Page 18: Control System

    STT 1600 3.1. Control system The control system is switched on at the main switch. The control system is operated via a ”selection window” and the keyboard of the operator panel. The facility’s control system is factory-programmed. Nevertheless, you have to set specific values (basic parameters) which are dependent on the processed material, for instance.

  • Page 19: Flow Chart

    STT 1600 3.1.2. Flow chart Indicator lamp Valve system Drying chamber Drying blower Return air filter Drying hopper Drying heater Regeneration heater Regeneration blower Regeneration air filter Indicator lamp messages: Green continous light: in process Red continous light: alarm Start-up 3-3...

  • Page 20: Switching On The Dryer

    STT 1600 3.2. Switching on the dryer Switch on the system by means of the main switch. The control system carries through a self-test; after that, the name of the dryer and the operation status of the unit are displayed.

  • Page 21: Viewing The Soft Ware-Ver Sion

    STT 1600 3.3. Vie wing the soft wa re-ver si on “±” Press the -key. Lamp test: all LED’s must light up. The soft ware-ver sion will be dis played (op tional). 3.4. Passwords The entry of a password prevents unauthorised persons from having access to the data entered into the control system.
  • Page 22 STT 1600 Login Press the key “F2". En ter the pass word. Press the ENTER key. If the pass word has been en tered cor rectly, the cor re spond ing pass word level is dis played. You can now en ter data into the con trol sys tem or mod ify data which have al ready been en tered.

  • Page 23: Basic Parameters

    STT 1600 3.5. Basic parameters Press the ”F1"-key. 3.5.1. Turning the devices on/off Select ”Main menu”. Acknowledge with the ENTER-key. Press the ”F2”-key. Dryer on/off ”on” = turn dryer on, ”off” = turn dryer off. Acknowledge with the ENTER-key. Timer on/off Press the SHIFT-key and choose with the arrow-keys the desired operation: ”internal”...
  • Page 24 STT 1600 Hop per X on/off (X = num ber of the dry ing hop per) “on” = re lea sing dry ing hop per X, “off” = bloc king dry ing hop per X Ack nowled ge with the EN TER-key.

  • Page 25: Entering Dryer Values

    STT 1600 3.5.2. Entering dryer values Select ”Dryer”. Acknowledge with the ENTER-key. Press the ”F3”-key. Regeneration Heater Act. The regenerated heat temperature will be displayed. Used air Act. The current temperature of the used air will be displayed. Press the “ ” key.
  • Page 26 STT 1600 If the unit ope ra tes with a re turn air coo ler (op tio nal): Re turn air cooler Tar get En ter the max. per mis si ble re turn air tem per a ture (65 °C max. (149°F max). Higher tem per a tures are not al lowed.

  • Page 27: Entering Hopper Values

    STT 1600 3.5.3. Entering hopper values Select ”Hopper”. Acknowledge with the ENTER-key. Press the ”F4”-key. Hopper entry X Target (X = number of the drying hopper) Enter the drying temperature for hopper flap X (when operating with supplementary heating). Acknowledge with the ENTER-key.
  • Page 28 STT 1600 If the unit ope ra tes with mo tor flaps (op tio nal): Gran ules X tar get: _ % = _ °C (°F) (X = num ber of the dry ing hop per) En ter the ma te rial tem per a ture at which the flap (op tional) on the dry ing hop per X should close.

  • Page 29: Observing Processing Status

    STT 1600 3.5.4. Observing processing status Select ”Status”. Acknowledge with the ENTER-key. Press the ”K1”-key. The current operation status of individual assembly parts is displayed: e.g.: valve block moved in/moved out/error “moved in” = The upper drying cells are within the drying circuit; the lower ones are regenerated.

  • Page 30: Setting Date And Time

    STT 1600 3.5.5. Setting date and time This function is password protected. Press the “K3"-key. Enter the password if requested. Date Press the SHIFT key. By means of the arrow keys, select the desired week-day. By means of the arrow keys, select the shown date.

  • Page 31: Viewing/Changing Language And Contrast

    STT 1600 3.5.6. Viewing/changing language and contrast This function is password protected. Press the “K4"-key. Enter the password if requested. Contrast Press the SHIFT key. By means of the arrow keys, select the adjustment which suits you best. Press the ENTER key.

  • Page 32: Changing Parameters

    STT 1600 3.5.7. Changing parameters Select ”Parameters”. Acknowledge with the ENTER-key. Press the SHIFT-key and the ”K1”-key. Run on time dry ing blower -- 300 sec. Stan dard set ting: 300 sec onds, changes only af ter con tact ing Ster ling Ser vice.

  • Page 33: Setting The Timer

    STT 1600 3.5.8. Setting the timer Select ”Timer”. Acknowledge with the ENTER-key. Press the SHIFT-key and the ”F1”-key. XX ON 00:00 OFF 00:00 (XX = day Mo-Su) Enter for each day the switching on time and the switching off time.

  • Page 34: Starting Continuous Operation

    STT 1600 3.6. Starting continuous operation When you have carried through all basic settings, you can start with continuous operation. Make sure that hoppers which are not in use are separated from the dehumidified air supply. Make sure that the set drying temperatures are suited for the materials in the hoppers.

  • Page 35: Viewing System Runtime

    STT 1600 3.7. Viewing system runtime Select ”System runtime”. Acknowledge with the ENTER-key. Press the SHIFT-key and the ”F2”-key. Sys tem runtime #.## h r.-blwr. #.## h m.-blwr. #.## h The runtime of the blowers and the PLC (SPS) is shown in hours.

  • Page 36: Switching The Dryer Off

    STT 1600 3.8. Switching the dryer off Select ”Main menu”. Acknowledge with the ENTER-key. Press the ”F2”-key. Select ”Dryer off”. Ack nowled ge with the ENTER-key. Wait until the regeneration phase is finished and the blower has come to a standstill.

  • Page 37: Er Ror And Er Ror Cor Rec Tion

    De hu mi di fied Air Dry er 4. Er ror and er ror cor rec ti on » This chap ter is di rec ted at the ope ra tors of the equip ment. This chap ter as su mes ge ne ral skills in dea ling with dry ing sys tems and SPS (PLC) con trol units.
  • Page 38 De hu mi di fied Air Dry er Alarm mes sages are dis played in plain lan guage on the screen of the op - er a tor de vice. The dis play of alarm mes sages in the op er a tor de vice can only be erased by press ing the ”ACK”...
  • Page 39 De hu mi di fied Air Dry er View Press the ”F2"-key. All alarm mes sa ges with their num bers (see Texts), date, time and the supp le ment ”K”, ”G”, or ”Q” are dis play ed. ”K” = co ming (a fai lu re oc cu red) Pres sing the “...
  • Page 40 De hu mi di fied Air Dry er Num ber Press the ”F2"-key. To tal mes sa ges The num ber of all alarm mes sa ges is dis play ed. Wai ting mes sa ges The num ber of cur rent alarm mes sa ges is dis play ed. Press the ESC-key.
  • Page 41 De hu mi di fied Air Dry er Over flow Press the ”F2"-key. If the re are more cur rent alarm mes sa ges than can be sa ved, a war ning mes sa ge (= re si du al buf fer rea ched) may be gi ven. This functi on is pass word pro tec ted (Ster ling ser vi ce).
  • Page 42 De hu mi di fied Air Dry er Text Press the ”F3"-key. All pos si ble alarm mes sa ges are dis play ed with their num bers (see Vie wing). For vie wing the pos si ble alarm mes sa ges, press the ar row keys: PLC (= SPS) Bat te ry is Emp ty Re pla ce the SPS bat te ry.
  • Page 43 De hu mi di fied Air Dry er Check the blo wer. Va cu um sen sor de fec ti ve. Tem pe ra tu re Mea su re ment Re ge ne ra ti on Hea ter De fec ti ve Check the ca bles and the sen sor.
  • Page 44 De hu mi di fied Air Dry er Tem pe ra tu re Mea su re ment Dry ing Hea ter De fec ti ve Check ca bles and sen sor. Check the po wer supp ly. Short cir cuit check. Ex cess Tem pe ra tu re Dry ing Hea ter The dry ing tem pe ra tu re is too high.
  • Page 45 De hu mi di fied Air Dry er Tem pe ra tu re Mea su re ment Gra nu les De fec ti ve Hop per X (X = num ber of the dry ing hop per) Check ca bles and sen sor. Check the po wer supp ly.

  • Page 46: Main Te Nance

    STT 1600 5. Main ten an ce » This chap ter is in ten ded for per sons with skills in elec tri cal and me cha ni cal are as due to their trai ning, ex pe rien ce and re cei ved in struc tions.
  • Page 47 STT 1600 Plea se ob ser ve the main ten an ce sche du le. Be fo re star ting main ten an ce work, cle an the equip ment of oil, fuel or lu - bri cants. En su re that ma te ri als and in ci den tals re qui red for ope ra ti on as well as spa re parts are dis po sed of pro per ly and in an en vi ron men tal ly sound man ner.

  • Page 48: Main Te Nance In Ter Vals

    STT 1600 5.1. Main ten an ce in ter vals 5 hours af ter first putt ing into op er a tion: Check dry ing agent in the dry ing cells, if nec es sary fil upl Daily: Check war ning signs on equip ment for good...

  • Page 49: Cleaning/Re New Ing The Air Fil Ters

    STT 1600 5.2. Clea ning/re ne wing the air fil ters Press the ”F2”-key. Se lect ”Dry er off”. Ack nowled ge with the EN TER-key. Wait un til the blo wers have stop ped tur ning. Switch off the dry er at the main switch.
  • Page 50 STT 1600 Fil ter of the elec tri cal cab i net Re turn air fil ter Re gen er a tion air fil ter STT 1600 Re turn air fil ter/Re gen er a tion air fil ter Loosen the se cur ing nut on the fil ter hous ing and re move the hous ing lid.
  • Page 51 STT 1600 Fil ter of the elec tri cal ca bi net Re mo ve the lid of the fil ter. Re mo ve the fil ter mat. Blow through the fil ter mat with com pres sed air from in si de to out si de or re new the fil ter mat.

  • Page 52: Ten Sioning The V-Belts

    STT 1600 5.3. Ten sio ning the V-belts Press the ”F2”-key. Se lect ”Dry er off”. Ack nowled ge with the EN TER-key. Wait un til the blow ers have stopped turn ing. Switch off the dryer at the main switch.
  • Page 53 STT 1600 ”Re gen er a tion” Blo wer Re move the pro tec tive grid of the blower (pos. 3). Loosen the nut (pos. 1). Loosen and re move the screw (pos. 2). Slide mo tor with car rier flange plate (pos. 6) to wards the car rier flange hous ing (pos. 4).
  • Page 54 STT 1600 ”Drying” Blower Re move the pro tec tive grid of the blower (pos. 7). Loosen the nut (pos. 10). Loosen the screw (pos. 11). Re place ment: Re move de fec tive V-belts (pos. 32), put on new ones.

  • Page 55: Dis Posing Of The Dry Ing Agent

    STT 1600 High-pres su re blo wers with fre quency con ver ter ope ra ti on Blo wers work wit hout V-belts! 5.4. Dis po sing of the dry ing agent En su re that dry ing cells are ex chan ged by Ster ling or re fil led only when emp ty.

  • Page 56: Changing The Bat Tery Of The Con Trol Sys Tem

    STT 1600 5.6. Chan ging the bat te ry of the con trol sys tem » This work may be car ried through only by qua li fied per son nel trai ned in the field of elec tri cal en gi nee ring.
  • Page 57 STT 1600 Sto re ba ckup bat te ries in a dry and cool pla ce. Ba ckup bat te ries can be sto red for ap prox. 5 ye ars. If ba ckup bat te ries are not trea ted pro per ly, they can ig ni te, ex plo de and cau se se ve re bur ning.

  • Page 58: Re Setting The Con Trol Val Ues

    STT 1600 5.6.1. Re set ting the con trol va lu es » This elec tri cal work is in ten ded to be car ried out only by trai ned per son nel. Af ter chan ging the bat te ry or the PLC the con trol va lu es should be re set - ted.

  • Page 59: Func Tional De Scrip Tion

    STT 1600 6. Functio nal des crip ti on This functio nal des crip ti on is in ten ded for all ope ra ting per son nel of the equip ment. Pre re qui si te for this functio nal des crip ti on is ge ne ral knowled ge of dry ers and SPS (PLC) sys tems.

  • Page 60: Dryer

    STT 1600 6.1. Dry er The dry er ope ra tes with de hu mi di fied air, i.e. the air is not only hea ted but also de hu mid i fied before flow ing into the dry ing hop per. This prin ci ple al lows plas tic gra nu les to be dried to a re si du - al moi stu re con tent as low as 0.002 % (PET gra nu la te).

  • Page 61: Drying Hop Per (Op Tional)

    STT 1600 6.2. Dry ing hop per (op tio nal) The ma te ri al is dried in the dry ing hop per. The de hu mi di fied air is for ced through the ma te ri al in the hop per, col lec ting moi stu re in the pro cess.

  • Page 62: Re Turn Air Cooler (Op Tional)

    STT 1600 6.3. Re turn air cooler (op tional) A re turn air cooler is gen er ally re quired in cases in which the re turn air tem per a ture is over 65 °C(149°F). A re turn air coo ler im pro ves the ef fi cien cy of the dry ing cells.

  • Page 63: Hop Per Heat Ers (Op Tional)

    STT 1600 6.4. Hop per hea ters (op tio nal) If dif fe ring dry ing tem pe ra tu res are re qui red in the dif fe rent dry ing hop pers, hop per hea ters must be in stal led on the dry ing hop pers. The dry ing tem pe ra tu re of each dry ing hop per can be set cen - tral ly at the dry er.

  • Page 64: Trans Port, As Sem Bly And Stor Age

    De hu mi di fied Air Dry er 7. Trans port, As sem bly and Sto ra ge » This chap ter is in ten ded for all ope ra ting per son nel of the equip ment. Per son nel using the se in struc tions must be in struc ted in the re gu la tions for the pre ven ti on of ac ci dents, the ope ra ting con di tions and sa fe ty re gu la tions and their im ple men ta ti on.

  • Page 65: Trans Port And Packing

    De hu mi di fied Air Dry er 7.1. Trans port and Pac king » Plea se en su re ade qua te car ry ing ca pa ci ty of the lif ting equip ment. Note that the dry er sys tem is top-he avy. Risc of topp ling! The equip ment pass a ri go rous ope ra ting test in the fac to ry and are pa cked ca re ful ly to avoid trans port da ma ge.
  • Page 66 De hu mi di fied Air Dry er with a work shop cra ne Check if the eye lets are in stal led on the dry er hou sing. If this con di ti on is met, fas ten the trans port ca bles to the eye lets. If this con di ti on is not met, mount the eye lets and then fas ten the trans port ca bles to the eye lets.

  • Page 67: As Sem Bly

    De hu mi di fied Air Dry er 7.2. As sem bly » Plea se en su re ade qua te car ry ing ca pa ci ty of the lif ting equip ment. Check the car ry ing ca pa ci ty of the point of in stal la ti on, par ti cu lar ly if in stal led on a plat form.

  • Page 68: As Sem Bly In Struc Tions

    STT 1600 8. As sem bly in struc tions » These in stal la tion in struc tions are in tended for per sons with skills in elec tri - cal and me chan i cal ar eas due to their train ing, ex pe ri ence and re ceived in - struc tions.

  • Page 69: Mount Ing Of The Suc Tion De Vice For Re Gen Er A Tion Ex Haust Air

    STT 1600 8.1. Moun ting of the suc ti on de vi ce for re ge ne ra ti on ex haust air When plas tics are dried which pro du ce ha zar dous ga ses, en vi ron men tal ly sound dis po sal of the re ge ne ra ti on ex haust air must be pro vi ded.

  • Page 70: Fill Ing Up The Dry Ing Cells

    STT 1600 8.2. Fill ing up the dry ing cells At de liv ery the dry ing cells are not filled with dry ing agent. Be fore fill ing up check that the screw con nec tion (B) is mounted.

  • Page 71: Con Nec Tion Of The Air Cool Ers (Op Tional)

    STT 1600 8.3. Con nec ti on of the air coo lers (op tio nal) A re turn air cooler is gen er ally re quired in cases in which the re turn air tem per a ture is over 65 °C (149°F).

  • Page 72: Elec Tri Cal Con Nec Tion

    STT 1600 8.4. Elec tri cal con nec ti on » Ob ser ve the ru les of the lo cal elec tri ci ty board. Check that the supp ly vol ta ge and the po wer fre quen cy are in ac cor dan ce with the data on the name pla te of the de vi ce.

  • Page 73: Tech Ni Cal Data

    STT 1600 9. Tech ni cal Data Ba sic Equip ment Cen tral ly mo ni to red PLC S7 dry ing con trol sys tem with ope ra tor pa nel OP 7 Cen tral tem pe ra tu re con trols for all hea ting ele ments to en su re cons tant tem pe ra tu re le vels...
  • Page 74 STT 1600 Di men si on sheet All di men sions are in mm (in). Sub ject to al te ra ti on. Tech ni cal Data 9-2...

  • Page 75: Spare Parts List

    STT 1600 10. Spare parts list Version: 64.10-0233GB05 11/02 » This spare parts list is intended to be used only by trained personnel. Other persons are not permitted to modify or repair the equipment. ID-num bers for units with spe cial volt age, for ex. blow ers, only on re - quest.
  • Page 76 STT 1600 12, 16 99716 Ball bearing 05190 Valve stem 86363 Spin dle mo tor 24 V Spare parts list 10-2...
  • Page 77 STT 1600 31536 Sealing 16517 Mo tor flap (op tional) 86379 Mo tor 88952 Sealing 83986 Mois ture sen sor 86387 Sen sor PT 100 (12 m) (39.37 ft.) Spare parts list 10-3...
  • Page 78 STT 1600 S89532 Blower HRD 1/5 94211 V-belt 83970 Blower HRD 7/12 31924 Acous tic cover 83963 V-belt 31516 Drying cell 96196 Drying agent 96143 Ten sion ring 28420 Sealing ring 85533 Ten sion ring 86356 Fil ter car tridge...

  • Page 79: Switching Cab I Net And Op Er Ating Unit

    STT 1600 Control 27892 Front panel with flow chart 83468 CPU 315 (S7) 83809 Battery 83811 OP 7 84156 84157 Fil ter Hop per heat ers Ca ble set heat ing 95828 Tu bu lar heat ing el e ment 230 V, 3 kW...

  • Page 80: Elec Tri Cal Man Ual

    De hu mi di fied Air Dry er 11. E lec tri cal ma nu al Ver si on: 64.10-0133GB01 10/97 » This electrical manual is intended to be used only by Ster ling service personnel and trained personnel authorized by Ster ling. Other persons are not permitted to modify or repair the equipment.
  • Page 81 De hu mi di fied Air Dry er 12. Ac ces so ries Ver si on: 64.10-0134GB01 10/97 En te ring va lu es on the OP 7 / 17 Flap con trol with Fuz zy-Lo gic Elek tror High-pres su re blo wer with fre quen cy con ver ter ope ra ti on Elek tror High-pres su re blo wer _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

  • Page 82: Ac Ces So Ries

    Ac ces so ries En te ring va lu es on the OP 7 / 17 Ster ling Ma te rial Pro cess ing...
  • Page 83 General Operation Entering Values General procedure In input fields, values can be entered on the OP and transferred to the PLC. To do this, proceed as follows: Step Procedure Branch initially to the screen you require and then to the corresponding screen entry. Using the arrow keys, select the input field you require within the screen entry.
  • Page 84 General Operation 3.3.1 Entering Numerical Values Input using numer- In fields that allow the operator to enter a numerical value, you enter the nu- ical keypad merical value character by character using the keypad on the system key- board. Changing the If there is a value in the field already, it is cleared completely from the field value when the first character is entered.
  • Page 85 General Operation 3.3.2 Entering Alphanumeric Values Mixed input of With the input of alphanumeric values, digits and letters are mixed. digits and letters For the numerical components of the input, proceed as described in section 3.3.1. If, however, you wish to enter a letter at the current cursor position, you must enable the corresponding alphanumeric font.
  • Page 86 General Operation Extended charac- If the characters available on the keypad are not sufficient for the alphanu- ter set meric input, you can select additional letters and special characters from the extended character set. The extended character set is available for all KC type fields.
  • Page 87 General Operation 3.3.3 Entering Symbolic Values Text instead of a When you enter a symbolic value, text is displayed instead of the value. If a value field has to be filled by entering symbolic values, take the value from a list of options.
  • Page 88 Acces so ries Flap con trol with Fuzzy-Lo gic Ster ling Ma te rial Pro cess ing...
  • Page 89 Flap con trol with Fuz zy-Lo gic Obser ve that the hop per is not swit ched off af ter the flap has clo sed. Tur ning hop per off: see chap ter “start-up, tur ning the de vi ces on/off”. Con trol unit “flap”...

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