Operating Instructions SM2-630 Dehumidified Air Dryer STT 1600 with Siemens S7 control unit Sterling Material Processing
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STT 1600 Sterling Material Processing 5200 West Clinton Ave. Milwaukee, WI 53223 Telephone: (414) 354-0970 Fax: (414) 354-6421 www.sterlco.
STT 1600 Sterling Material Processing retains all rights to change the information in these operating instructions at any time without notice. SM2-630 We assume no liability for any errors or direct or indirect damage resulting in context with these operating instructions. Copying, translation or publication in any form except for personal use of purchaser requires approval from Sterling Material Processing. All rights reserved.
STT 1600 TABLE OF CONTENTS 1. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1. 1.2. 1.3. 1.4. 1.5. Warnings and symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Explanations and information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Legal basis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STT 1600 5. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 5.1. 5.2. 5.3. 5.4. 5.5. 5.6. Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Cleaning/renewing the air filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Tensioning the V-belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STT 1600 10. Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 10.1. Switching Cabinet and Operating Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5 11. Electrical manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 o Connection diagram no.: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ o Currently not available; will be delivered at a later date! 12. Accessories . . . . . .
Dehumidified Air Dryer 1. General Information These operating instructions must be used by every person charged with work on the unit. SM2-630 » These operating instructions are addressed to all users of the device.
Dehumidified Air Dryer 1.1. Warnings and symbols The following warnings and symbols are used in these operating instructions: » This symbol indicates danger to life! Fatal or serious injury is possible if the corresponding instructions, regulations or warnings are not observed. This symbol indicates that serious injury is possible if the corresponding instructions, regulations or warnings are not observed.
Dehumidified Air Dryer 1.2. Explanations and information Various terms and designations are used in these operating instructions to ensure clarity. Therefore please note that the terms used in the text stand for the corresponding explanations listed below. • Equipment ”Equipment” can mean an individual unit, a machine or an installation. • Operating personnel The ”operating personnel” are persons operating the equipment on their own responsibility or according to instructions.
Dehumidified Air Dryer 2. Safety instructions » These safety instructions apply to all persons within the range of action of the equipment. Please inform all persons within the range of action of the equipment of the direct and indirect hazards connected with the equipment. These operating instructions are to be used by all persons assigned activities connected with the equipment. Knowledge of the English language is prerequisite.
Dehumidified Air Dryer 2.1. For your safety General The operating personnel of this equipment must be at least 16 years old. Please read these operating instructions carefully before taking into operation for the first time. Contact us should questions arise. This avoids injury and damage to equipment! These operating instructions must be kept available at all times at the place of operation of the equipment.
Dehumidified Air Dryer Take care that the device is not standing on the mains cable. This will prevent danger to people and material! The drying cells must be filled with drying agent before setting-up the dryer (only STT 1600, STT 2400). This will prevent damage of material! Check 5 hours after first putting into operation that the drying cells are sufficiently filled with drying agent (only STT 1600, STT 2400).
Dehumidified Air Dryer Maintenance Before starting maintenance work, appoint a supervisor. Inform the responsible personnel before maintenance work on the system is started. Caution: Danger of accidents! Disconnect the equipment from mains supply before starting maintenance procedures to ensure that it cannot be switched on unintentionally. Caution: Danger of accidents! All pipes, hoses and scre wed connections should be checked regularly for leaks and damage.
Dehumidified Air Dryer 2.2. For the safety of the devices Never change settings without carefully assessing the consequences. Use only original Sterling spare parts. Observe the maintenance instructions. Keep a record of all maintenance works and repairs. Please note that electronic components can be damaged by static discharge. Before initial operation and in regular intervals, make sure that no electrical connections are loose. Never readjust sensors without exactly knowing their functions.
Dehumidified Air Dryer Observe that the drying cells must be filled with drying agent before setting-up the dryer (only STT 1600, STT 2400). This will prevent damage of material! SM2-630 Check 5 hours after first putting into operation that the drying cells are sufficently filled with drying agent (only STT 1600, STT 2400).
STT 1600 3. Start-up » This chapter is directed at the operators of the equipment. This chapter assumes general skills in dealing with drying systems and SPS (PLC) control units. This chapter assumes that the functional description has been read and understood. It should be ensured in each and every case that the operators have the relevant skills. F Note down all set values of the 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. The values entered are stored in the control system and remain so, even after the unit is switched off or in the event of a power cut.
STT 1600 3.1.2.
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. F Unblock the control system: Keep the ACK key pressed until the LEDs of the keys K1 - K4 light up. 3.2.1.
STT 1600 3.3. Viewing the software-version Press the “±”-key. & Lamp test: all LED’s must light up. The software-version will be displayed (optional). 3.4. Passwords The entry of a password prevents unauthorised persons from having access to the data entered into the control system. Important data can then be entered or modified only after the password has been entered. If you make no entries for more than 10 minutes, the access is blocked and you have to re-enter the password.
STT 1600 Login Press the key “F2". Enter the password. Press the ENTER key. & If the password has been entered correctly, the corresponding password level is displayed. You can now enter data into the control system or modify data which have already been entered. Press the ESC key. Logout Press the key “F3". & Only data for which no password is necessary (= password level 0) can now be entered into the control system or modified. Press the “â“ key. Edit Press the key “F2".
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. or 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” = operation with timer (operation at OP7, see chapter timer), “external” = operation with timer (if present), ”off” = operation without timer.
STT 1600 Hopper X on/off (X = number of the drying hopper) “on” = releasing drying hopper X, “off” = blocking drying hopper X Acknowledge with the ENTER-key. Hopper heater X on/off (X = number of the hopper heater) “on” = switch on hopper heater X, “off” = switch off hopper heater X Acknowledge with the ENTER-key. SM2-630 Press the ”F1"-key.
STT 1600 3.5.2. Entering dryer values Select ”Dryer”. Acknowledge with the ENTER-key. or 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 “â” key. & If the unit is operates with “dew point controlled changeover point with dew point display” (optional): Dew point max. Enter the maximum permissible (worst allowed) dew point temperature (-35 to 28 °C).
STT 1600 & If the unit operates with a return air cooler (optional): Return air cooler Target Enter the max. permissible return air temperature (65 °C max. (149°F max). Higher temperatures are not allowed. Acknowledge with the ENTER-key. Return air cooler Act. The current return air temperature will be displayed. & The cooling effect of the return air cooler is highly dependent on the cooler circuit.
STT 1600 3.5.3. Entering hopper values Select ”Hopper”. Acknowledge with the ENTER-key. or 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. Hopper entry X Act. (X = number of the drying hopper) The current temperature at the feed opening of hopper flap X will be displayed. & If there is a cable break “+0 °C” (32°F) is displayed.
STT 1600 & If the unit operates with motor flaps (optional): Granules X target: _ % = _ °C (°F) (X = number of the drying hopper) Enter the material temperature at which the flap (optional) on the drying hopper X should close. Confirm with the ENTER key. & This value is entered in percent of the temperature on the hopper inlet. The material temperature calculated by the control system for closing the flap on the drying hopper X is displayed in °C (°F). Granules X act.
STT 1600 3.5.4. Observing processing status Select ”Status”. Acknowledge with the ENTER-key. or 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. “moved out” = The upper drying cells are regenerated; the lower ones are within the drying circuit. “error” = An error has occurred.
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. Press the SHIFT key. Enter the desired date. Press the ENTER key. Time Enter the desired time. Press the ENTER key. SM2-630 Press the ”F1”-key.
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. & Depending on the outside temperature, the brightness of the screen may vary. Language Press the SHIFT key. By means of the arrow keys, select the desired language (if present). Press the ENTER key. SM2-630 Press the “F1"-key.
STT 1600 3.5.7. Changing parameters Select ”Parameters”. Acknowledge with the ENTER-key. or Press the SHIFT-key and the ”K1”-key. Run on time drying blower -- 300 sec. Standard setting: 300 seconds, changes only after contacting Sterling Service. Press the “â” key. Parameters F The values in this menu may only be changed after contacting Sterling Service. SM2-630 Press the ”F1"-key.
STT 1600 3.5.8. Setting the timer Select ”Timer”. Acknowledge with the ENTER-key. or 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. Acknowledge with the ENTER-key. & Example: Fr Sa Su Mo ON ON ON ON 08:00 00:00 20:00 00:00 OFF OFF OFF OFF 23:59 23:59 08:00 00:00 The dryer starts on Friday at 08:00 in the morning, runs through without interruption until sunday at 08:00 and switches off.
STT 1600 3.6. Starting continuous operation When you have carried through all basic settings, you can start with continuous operation. F 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. After first filling, do not process the material until after the dwelling time. If a return air cooler is installed, switch on the coolant circuit of the return air cooler.
STT 1600 3.7. Viewing system runtime Select ”System runtime”. Acknowledge with the ENTER-key. or Press the SHIFT-key and the ”F2”-key. System runtime PLC r.-blwr. m.-blwr. The runtime of the blowers and the PLC (SPS) is shown in hours. SM2-630 & #.## h #.## h #.
STT 1600 3.8. Switching the dryer off Select ”Main menu”. Acknowledge with the ENTER-key. or Press the ”F2”-key. Select ”Dryer off”. Acknowledge with the ENTER-key. L Wait until the regeneration phase is finished and the blower has come to a standstill. Switch off the dryer at the main switch. Disconnect the power supply. SM2-630 F Never switch off the dryer directly at the main switch.
Dehumidified Air Dryer 4. Error and error correction » This chapter is directed at the operators of the equipment. This chapter assumes general skills in dealing with drying systems and SPS (PLC) control units. This chapter assumes that the “start-up” description has been read and understood. SM2-630 It should be ensured in each and every case that the operators have the relevant skills.
Dehumidified Air Dryer & Alarm messages are displayed in plain language on the screen of the operator device. The display of alarm messages in the operator device can only be erased by pressing the ”ACK” key. The failure is not repaired. A failure is given by flashing of the LED “alarm”. If the alarm message is acknowledged by pressing of the “ACK” key, but the failure is not yet eliminated, the flashing changes to steady light.
Dehumidified Air Dryer View Press the ”F2"-key. All alarm messages with their numbers (see Texts), date, time and the supplement ”K”, ”G”, or ”Q” are displayed. & ”K” = coming (a failure occured) Pressing the “à”-key displays the alarm message in plain text. ”G” = going (the resent for the failure has gone) ”Q” = reset (the display of the alarm message in the operator device has been erased by pressing the ”ACK”-key) Press the ESC-key. Print (Optional) & This function is password protected.
Dehumidified Air Dryer Number Press the ”F2"-key. Total messages The number of all alarm messages is displayed. Waiting messages The number of current alarm messages is displayed. Press the ESC-key. Delete Press the ”F3"-key. & This function is password protected (Sterling service). Press the ENTER-key for deleting the messages. Press the ESC-key. SM2-630 Press the “â”-key.
Dehumidified Air Dryer Overflow Press the ”F2"-key. & If there are more current alarm messages than can be saved, a warning message (= residual buffer reached) may be given. This function is password protected (Sterling service). Overflow warning On/Off Press the SHIFT-key. By means of the arrow keys, select ”on” if a warning message is to be given. By means of the arrow keys, select ”off” if no warning message is to be given. Press the ENTER-key.
Dehumidified Air Dryer Text Press the ”F3"-key. All possible alarm messages are displayed with their numbers (see Viewing). For viewing the possible alarm messages, press the arrow keys: PLC (= SPS) Battery is Empty Replace the SPS battery. Main Switch is Off The main switch has been placed in the off position. The safety temperature limiter of the drying or the regeneration heater, respectively, has been activated. The safety temperature limiter of a hopper heater has been activated. Error valve block.
Dehumidified Air Dryer Check the blower. Vacuum sensor defective. Temperature Measurement Regeneration Heater Defective Check the cables and the sensor. Check the power supply. Short circuit check. Excess Temperature Regeneration Heater The regeneration temperature is too high. Check the safety temperature limiter. Sterling Service. Insufficient Temperature Regeneration Heater The regeneration temperature is too low. Check the regeneration heater.
Dehumidified Air Dryer Temperature Measurement Drying Heater Defective Check cables and sensor. Check the power supply. Short circuit check. Excess Temperature Drying Heater The drying temperature is too high. Check the safety temperature limiter. Sterling Service. Insufficient Temperature Drying Heater The drying temperature is too low. Check the drying heater. Safety Switch Drying Heater Check the heater. Check the fuses. Short circuit check of the heater.
Dehumidified Air Dryer Temperature Measurement Granules Defective Hopper X (X = number of the drying hopper) Check cables and sensor. Check the power supply. Short circuit check. Excess Temperature Granules Hopper X (X = number of the drying hopper) The material temperature is too high. Check the heater. Check the throttle valve. Valve Error Hopper X (X = number of the drying hopper) The throttle valve does not close or closes too slowly. Check the throttle valve. SM2-630 Press the “F1"-key.
STT 1600 5. Maintenance » This chapter is intended for persons with skills in electrical and mechanical areas due to their training, experience and received instructions. Personnel using the instructions in this chapter must be instructed of the regulations for the prevention of accidents, the operating conditions and safety regulations and their implementation. Ensure in each case that the personnel are informed. For maintenance work taking place at heights of over approx.
STT 1600 F Please observe the maintenance schedule. Before starting maintenance work, clean the equipment of oil, fuel or lubricants. Ensure that materials and incidentals required for operation as well as spare parts are disposed of properly and in an environmentally sound manner. Use only original Sterling spare parts. SM2-630 Keep record of all maintenance and repair procedures.
STT 1600 5.1.
STT 1600 5.2. Cleaning/renewing the air filters Press the ”F2”-key. Select ”Dryer off”. Acknowledge with the ENTER-key. L Wait until the blowers have stopped turning. Switch off the dryer at the main switch. Disconnect the power supply. & Clogged filters reduce the volume of circulating air to a substantial degree and result in decreased dryer efficiency. In addition, the heating elements may be damaged due to clogged filters.
STT 1600 Filter of the electrical cabinet Return air filter Regeneration air filter STT 1600 Return air filter/Regeneration air filter Loosen the securing nut on the filter housing and remove the housing lid. Remove the return air filter/regeneration air filter. Clean the filter cartridge with compressed air from inside to out or renew the filter. Never knock the filter cartridge on the floor. Clean the filter housing. Use lint-free cleaning rags.
STT 1600 Filter of the electrical cabinet Remove the lid of the filter. Remove the filter mat. Blow through the filter mat with compressed air from inside to outside or renew the filter mat. Clean the filter housing. Use lint-free cleaning rags. Re-install the cleaned/new filter mat. Replace the lid of the filter. F Never operate the dryer without filter mat.
STT 1600 5.3. Tensioning the V-belts Press the ”F2”-key. Select ”Dryer off”. Acknowledge with the ENTER-key. L Wait until the blowers have stopped turning. Switch off the dryer at the main switch. Disconnect the power supply. F Open the upper panel by means of the provided switch cabinet key.
STT 1600 ”Regeneration” Blower Remove the protective grid of the blower (pos. 3). Loosen the nut (pos. 1). Loosen and remove the screw (pos. 2). Slide motor with carrier flange plate (pos. 6) towards the carrier flange housing (pos. 4). Replacement: Remove defective V-belts (pos. 5), put on new ones. Re-tensioning: Adjust belt tension by means of screw (pos. 2) in accordance with the information plate. Tighten the nuts on threaded bolt (pos. 1) again. Mount the protective grid of the blower (pos. 2).
STT 1600 ”Drying” Blower Remove the protective grid of the blower (pos. 7). Loosen the nut (pos. 10). Loosen the screw (pos. 11). Replacement: Remove defective V-belts (pos. 32), put on new ones. Re-tensioning: Adjust belt tension by means of screw (pos. 11) in accordance with the information plate. Tighten the nut (pos. 10) again. Mount the protective grid of the blower (pos. 7). Mount the side panels. SM2-630 F Attention should be given to exact alignment of the V-belt pulleys.
STT 1600 High-pressure blowers with frequency converter operation F Blowers work without V-belts! 5.4. Disposing of the drying agent Ensure that drying cells are exchanged by Sterling or refilled only when empty. Dessicant must be disposed of in accordance with all official regulations. Used dessicant are to be disposed of as hazardous waste, as it may be contaminated with foreign substances from the materials dried in the system.
STT 1600 5.6. Changing the battery of the control system » F This work may be carried through only by qualified personnel trained in the field of electrical engineering. The battery may be changed only with the control system switched on. Open the control box by means of the control box key which is part of the supply. Open the front door of the CPU. Pull the backup battery with cable out of the compartment.
STT 1600 L Store backup batteries in a dry and cool place. Backup batteries can be stored for approx. 5 years. If backup batteries are not treated properly, they can ignite, explode and cause severe burning. & Order number battery: ID 83809 SM2-630 Batteries must be disposed of in keeping with the relevant national environment protection regulations/guidelines.
STT 1600 5.6.1. Resetting the control values » & This electrical work is intended to be carried out only by trained personnel. After changing the battery or the PLC the control values should be resetted. All control values are set back to the standard settings. Open the control box with the switch box key which is part of the supply. Turn the key to the STOP position. Turn the key to the MRES position.
STT 1600 6. Functional description This functional description is intended for all operating personnel of the equipment. Prerequisite for this functional description is general knowledge of dryers and SPS (PLC) systems. SM2-630 Ensure in each case that the operating personnel are sufficiently informed.
STT 1600 6.1. Dryer The dryer operates with dehumidified air, i.e. the air is not only heated but also dehumidified before flowing into the drying hopper. This principle allows plastic granules to be dried to a residual moisture content as low as 0.002 % (PET granulate). The dryer operates continuously, i.e. dehumidified and, if necessary, heated air is produced continuously. F The dryer is designed for continuous operation.
STT 1600 6.2. Drying hopper (optional) The material is dried in the drying hopper. The dehumidified air is forced through the material in the hopper, collecting moisture in the process. The drying hopper must be dimensioned according to its intended use to ensure that the final moisture content is attained. When the hopper is filled for the first time or at the start of a drying procedure, the material in the hopper must be dried completely before material can be removed from the hopper for the first time.
STT 1600 6.3. Return air cooler (optional) F A return air cooler is generally required in cases in which the return air temperature is over 65 °C(149°F). A return air cooler improves the efficiency of the drying cells. The return air cooler reduces the return air temperature to a defined value. The return air temperature is set at the operation panel. & The lower the value chosen for the return air temperature, the better the efficiency of the drying cells.
STT 1600 6.4. Hopper heaters (optional) If differing drying temperatures are required in the different drying hoppers, hopper heaters must be installed on the drying hoppers. The drying temperature of each drying hopper can be set centrally at the dryer. 6.5. Automatic motor flaps (optional) Automatic motor flaps cut off the drying hopper from the drying circuit as soon as the material is completely dried. The supplementary heating system is also switched off.
Dehumidified Air Dryer 7. Transport, Assembly and Storage » This chapter is intended for all operating personnel of the equipment. Personnel using these instructions must be instructed in the regulations for the prevention of accidents, the operating conditions and safety regulations and their implementation. Ensure in each case that the operating personnel are sufficiently informed.
Dehumidified Air Dryer 7.1. Transport and Packing » Please ensure adequate carrying capacity of the lifting equipment. Note that the dryer system is top-heavy. Risc of toppling! The equipment pass a rigorous operating test in the factory and are packed carefully to avoid transport damage. Please check packing on delivery for transport damage. The inlet and discharge flanges are sealed with plugs, so that no dirt can enter during transport. Plugs must be removed before assembly.
Dehumidified Air Dryer with a workshop crane Check if the eyelets are installed on the dryer housing. If this condition is met, fasten the transport cables to the eyelets. If this condition is not met, mount the eyelets and then fasten the transport cables to the eyelets. Disassemble the eyelets after set-up.
Dehumidified Air Dryer 7.2. Assembly » Please ensure adequate carrying capacity of the lifting equipment. Check the carrying capacity of the point of installation, particularly if installed on a platform. The place selected for installation should be as free of vibrations as possible. The main switch must be freely accessible. Ground the equipment against electrostatic charging. A special foundation is not required for installation.
STT 1600 8. Assembly instructions » These installation instructions are intended for persons with skills in electrical and mechanical areas due to their training, experience and received instructions. Personnel using these installation instructions must be instructed in the regulations for the prevention of accidents, the operating conditions and safety regulations and their implementation. Ensure in each case that the personnel are informed.
STT 1600 8.1. Mounting of the suction device for regeneration exhaust air When plastics are dried which produce hazardous gases, environmentally sound disposal of the regeneration exhaust air must be provided. The throughput of the regeneration blower may not be changed. SM2-630 It must be taken into consideration when installing a disposal system (e.g. exhaust system) that regeneration exhaust air is extremely humid.
STT 1600 8.2. Filling up the drying cells L At delivery the drying cells are not filled with drying agent. F Before filling up check that the screw connection (B) is mounted. Remove the tension ring and the tin plate (A). A Fill the drying cell with drying agent up to the nozzle (see filling level). Füllstand Trocknungsmittel Filling level drying agent Mount the tin plate and the tension ring (A).
STT 1600 8.3. Connection of the air coolers (optional) F A return air cooler is generally required in cases in which the return air temperature is over 65 °C (149°F). The return air cooler can be connected to a coolant circuit or the water mains network. Observe the water flow with connection to water mains network. The coolant circuit must be dimensioned acccordingly. Remove the side panel of the dryer. Connect the coolant intake line and coolant return line to the return air cooler.
STT 1600 8.4. Electrical connection » Observe the rules of the local electricity board. Check that the supply voltage and the power frequency are in accordance with the data on the name plate of the device. The electrical connection may only be carried through or assigned by Sterling service staff or by qualified staff authorized by Sterling. Other persons are not permitted to carry through the electrical connection. The main switch must be freely accessible.
STT 1600 9. Technical Data Basic Equipment · Centrally monitored PLC S7 drying control system with operator panel OP 7 · Central temperature controls for all heating elements to ensure constant temperature levels · Safety temperature limiter for all heaters · Designed for optimal regeneration time due to constant monitoring of the moisture level in the drying cells or desiccant beds.
STT 1600 SM2-630 Dimension sheet All di mensions are in mm (in). Subject to alteration.
STT 1600 10. Spare parts list Version: 64.10-0233GB05 11/02 » Other persons are not permitted to modify or repair the equipment. ID-numbers for units with special voltage, for ex. blowers, only on request. SM2-630 & This spare parts list is intended to be used only by trained personnel.
STT 1600 12, 16 99716 Ball bearing 16 05190 86363 Valve stem Spindle motor 24 V SM2-630 12 Spare parts list 10-2
STT 1600 100 72 39 31536 Sealing 72 16517 86379 88952 Motor flap (optional) Motor Sealing 100 83986 Moisture sensor 86387 Sensor PT 100 (12 m) (39.37 ft.
STT 1600 33 36 5 65 4 64 61 66 S89532 94211 Blower HRD 1/5 V-belt 5 83970 31924 83963 Blower HRD 7/12 Acoustic cover V-belt 33 31516 96196 96143 28420 85533 Drying cell Drying agent Tension ring Sealing ring Tension ring 36 86356 Filter cartridge 61 88226 Filter cartridge 64 21027 Sealing 65 07050 Sealing 66 27899 85322 85652 Heating head Silicon cable Safety temperature limiter SM2-630 4 Spare parts list 10-4
STT 1600 Control 27892 Front panel with flow chart 83468 CPU 315 (S7) 83809 Battery 83811 OP 7 84156 84157 Fan Filter Hopper heaters Cable set heating 95828 Tubular heating element 230 V, 3 kW 85652 Safety temperature limiter (STB) Flaps (optional) 16522 88952 Motor flap NW150, complete Sealing 16517 88952 Motor flap NW80, complete Sealing 86376 Motor operator 24 V, AD/DC, 50-60 Hz 18232 88952 Air control flap Sealing 84492 Thermometer STT 1600 93687 93686 Fine-mesh filter with filt
Dehumidified Air Dryer 11. Electrical manual Version: 64.10-0133GB01 10/97 » This electrical manual is intended to be used only by Sterling service personnel and trained personnel authorized by Sterling. Other persons are not permitted to modify or repair the equipment. ¨ Connection diagram no.
Dehumidified Air Dryer 12. Accessories Version: 64.
Accessories 02/01GB Entering values on the OP 7 / 17 Sterling Material Processing
General Operation 3.3 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 1 Branch initially to the screen you require and then to the corresponding screen entry. 2 Using the arrow keys, select the input field you require within the screen entry. 3 Then enter your value. Depending on how the field has been configured, values may be input as inputs of numerical values (refer to section 3.3.
General Operation 3.3.1 Entering Numerical Values Input using numerical keypad In fields that allow the operator to enter a numerical value, you enter the numerical value character by character using the keypad on the system keyboard. Changing the value If there is a value in the field already, it is cleared completely from the field when the first character is entered. Once input has been started, you cannot exit from the field until the input has been entered or canceled.
General Operation 3.3.2 Entering Alphanumeric Values Mixed input of digits and letters With the input of alphanumeric values, digits and letters are mixed. Entering A to F characters A to F characters can be entered directly with activated Shift Lock mode using numeric keys 1 to 6. If you want to enter digits again after the letters, Shift Lock mode must be de-activated.
General Operation Extended character set If the characters available on the keypad are not sufficient for the alphanumeric 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. To enter the string 18OKT61, for example, proceed as follows: Step Procedure 1 Press in succession 2 Press Shift-LED is on. 1 A 8 \ The extended character set is available.
General Operation 3.3.3 Entering Symbolic Values Text instead of a value When you enter a symbolic value, text is displayed instead of the value. If a field has to be filled by entering symbolic values, take the value from a list of options. To do so, proceed as follows: Step 1 Procedure In the input field press Shift LED is on. \ The list of options with its configured symbolic inputs is activated. 2 Select the value you require using the arrow keys.
Accessories 10/00GB Flap control with Fuzzy-Logic Sterling Material Processing
Flap control with Fuzzy-Logic F Observe that the hopper is not switched off after the flap has closed. Turning hopper off: see chapter “start-up, turning the devices on/off”.
