System Architectures ........................1 List of Standard Models ........................ 2 1.3.1 Model 13-12 – Type 1 – VFD as a Contactor Replacement ........... 3 1.3.2 Model 13-13 – Type 2 – VFD System with Constant Duct Pressure ........4 1.3.3 Model 13-14 –...
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List of Illustrations Figure 1 – Type 1 Architecture ........................3 Figure 2 – Type 2 Architecture ........................4 Figure 3 – Type 3 Architecture ........................5 Figure 4 – Blast Gate System Architecture ....................6 Figure 5 – Enhanced Control System for Wet Collectors - System Architecture .......... 7 Figure 6 –...
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Guide Dwyer 616KD Series http://www.dwyer-inst.com/PDF_files/PDS/DS_616KD.PDF http://www.dwyer-inst.com/PDF_files/616KD_new.pdf Invertek Optidrive Eco User Guide http://www.invertekdrives.com/client-uploads/download-manager/user- Rev 2.01 guides/82-HEMAN- IN%20V2.02%20Optidrive%20Eco%20User%20Guide%20Rev%202.02.pdf Lev-co Users’ Guide - Model 13- http://www.lev-co.com/attachments/User%20Guides/(13- 16 Enhanced Control Sys- 16)%20User's%20Guide%20- tem for Wet Collectors %20Enhanced%20Control%20System%20for%20Wet%20Collectors%20R2.pdf Norgren V61R517AA213JB http://cdn.norgren.com/pdf/V60-V62%20Series%20Valves.pdf Sensocon A1/A2 Installation & Op- http://www.sensocon.com/files/PDFs/IOM_A1-A2.pdf...
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This product is guaranteed to be free of defects in materials or workmanship for a period of one (1) year from date of delivery. Lev-co undertakes to repair and/or replace any such defect within the warranty period at no cost to the client. Any action by the client involving attempted repair and/or replacement either by himself or a third party voids this and all warranties.
1 Introduction 1.1 Scope This User’s Guide is intended to describe the control systems used in Lev-co fume and dust extraction systems employing Variable Frequency Drives (VFDs). It does not cover the installation of the ducting, arms or hose reels, dampers or blast gates, motors, fans, filters or other equipment directly related to the extraction process.
These are described below. 1.3 List of Standard Models Standard available models comprise the following: Model 13-12 – Type 1 – VFD as a Contactor Replacement Model 13-13 – Type 2 – VFD System with Constant Duct Pressure ...
1.3.1 Model 13-12 – Type 1 – VFD as a Contactor Replacement In this architecture, the VFD operates simply as an enhanced-performance contactor replacement. The benefits are the ability to gently ramp motor speed up and down at start and stop, thereby minimizing motor stresses and extending motor life, as well as eliminating heavy startup surge currents and their attendant wasteful energy costs.
1.3.2 Model 13-13 – Type 2 – VFD System with Constant Duct Pressure In this approach, the Type 1 system is extended to include a pressure sensor in the main duct down- stream of the fan, which allows the VFD to actively control motor speed as a function of duct (negative) pressure.
1.3.3 Model 13-14 – Type 3 – Type 2 System with Controlled Electrical Dampers This system takes the Type 2 approach a step further, making the start/stop damper interlock an inher- ent feature and providing power to electrically-operated/spring-return dampers. The first damper to open causes the fan to start;...
1.3.4 Model 13-15 – Type 3 VFD System with Blast Gates Blast gates may be used as an alternative to electrical dampers in some installations. The functionality is essentially identical to a standard Type 3 system except for extraction adjustability (HI/LO) at the (up to 8) workstations.
1.3.5 Model 13-16 – Enhanced Control System for Wet Collectors This model is covered in its own User Guide. For reference, its architecture is shown below. Note that the VFD is not shown as it is usually contained within the main control panel rather than being separate- ly-mounted as in most other control systems.
1.3.6 Model 13-74 – Type 2 System with Vibra-Pulse Cleaning This system combines the basic Type 2 model with an additional filter cleaning facility comprising drives for two air-blast solenoids as used in the Vibra-Pulse cleaning system. Figure 6 – Type 2 System with Vibra-Pulse Cleaning System Architecture...
1.3.7 Model 13-75 – Type 2 System with Shaker Motor Cleaning This system is similar to the Vibra-Pulse system except that a shaker motor rather than air-blast sole- noids is used for filter cleaning. Figure 7 – Type 2 System with Shaker Motor Cleaning System Architecture...
1.3.8 Models 13-76 and 13-77 – Type 2 System with Sequenced Solenoids Cleaning These systems are essentially identical except for the type of control board and solenoids supported – AC in one case and DC in the other. They provide similar functionality to the two previous systems ex- cept for the use of a series of air solenoids which are triggered in rapid-fire sequence to provide the cleaning function.
2 VFD Specifications Lev-co uses VFDs from Invertek, ABB (two types) and in some cases Danfoss. Devices used may be se- lected from the following tables. ABB ACS250 IP66 VFDs - Type A 1-phase 110 to 120V, 3-phase output 200 to 240 V ACS250-01U-02A3-1+B063 0.50...
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All Type O Optidrive IP20 VFDs Optidrive IP55 VFDs Optidrive IP66 VFDs 200 – 240 Volt, 1 Phase Input 200 – 240 Volt, 3 Phase Input 200 – 240 Volt, 1 Phase Input Frame Model Code Frame Model Code Frame Model Code ODV-3-220043-1F12-SN ODV-3-420300-3F1N-TN...
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Danfoss IP20/55/66 VFDs - Type D NB: Must specify IP rating and voltage 208-240V 3 phase 380-480V 3 phase 525-600V 3 phase TYPE TYPE TYPE P1K1 P1K1 P1K1 P1K5 P1K5 P1K5 P2K2 10.6 P2K2 P2K2 P3K0 12.5 P3K0 P3K0 P3K7 16.7 P4K0 P4K0...
3 Type 1 3.1 Mechanical Installation A type 1 control package comprises two units: a control panel with switch, potentiometer and indicator (and optional fused disconnect and pressure gauge) and a VFD. These may be mounted as desired, al- though care must be observed in selecting the location of the VFD. The VFD must be located within a 50m cable run from the motor for best performance and motor life.
3.4 Operation The VFD is controlled by the control panel RUN/STOP and SPEED ADJUST controls. The FAN ON indicator shows the motor status – in case of a fault it will turn off. To avoid overheating the motor due to lack of airflow, the fan should never be operated unless at least one damper is open.
27NPT tap such as Acklands-Grainger part number WSWPT18. Screw in a 3/16” hose barb as supplied by Lev-co in the installation kit – ensure it is tight. Run the tubing back to the control cabinet, through the strain relief grommet in the base, and up to the tee connector which splits the sense line to the pressure sensor and the indicator.
4.2 Electrical Installation Power wiring must observe the requirements of the Canadian Electrical Code CSA C22.1-15. Addition- ally, screened wiring is recommended for the connection from the VFD to the motor. See section 4 of the Invertek Optidrive ECO User Guide (or the appropriate sections for the other drive types) for de- tailed installation information.
4.5 Operation The MANUAL/OFF/AUTO switch on the control panel will turn on the fan motor in either of the MANUAL or AUTO positions. The MOTOR RUNNING light will illuminate once the motor has started. Note that the motor ramps to start and ramps to stop at the specified rate (30 seconds to or from full speed as default) and should be allowed sufficient time to achieve its final state before any other action is taken (such as a restart).
5 Type 3 5.1 Mechanical Installation This is identical to the Type 2 installation – see section 4.1, with the exception that a Sensocon integrat- ed pressure gauge/transmitter is usually installed rather than a separate gauge and transmitter as in a Type 2.
5.4 VFD Setup VFD setup is identical to a Type 2 system – see section 4.4. 5.5 Operation Operation is essentially identical to a Type 2 system (see section 4.5), except that in AUTO mode the start/stop interlocks are now integral to the system and not optional. Note that ramp-up and ramp- down times remain.
7 Type 2 with Sequenced Solenoid Filter Cleaning In the most general terms, the Lev-co Type 2 VFD Exhaust System with Sequenced Solenoid Filter Clean- ing is a system comprising a dust extractor as described above and a filter cleaner. The filter cleaner may be one of two types –...
All system types are also available to be applied to Type 3 exhaust systems in an identical manner, al- though this is not documented herein. 7.1 Mechanical Installation Mechanical installation for a sequenced solenoid system is similar to that of a normal type 2 or 3 system except for the pressure tubing connection.
7.3 Pressure Sensor Setup The A1 pressure sensor has four buttons located on the face of the gauge for set-up and calibration. These are Span, Zero, Units, and Lock. The Units button changes the unit of measure – set this for inch- es wc.
7.5 Operation Operation is identical to a standard system, with the exception of the automatic filter cleaning function. For the Vibra-Pulse cleaning, this takes place automatically ten minutes after the fan stops and requires thirty seconds to complete. If either of these conditions is not satisfied, cleaning either does not start or is aborted.
8 Type 2 or 3 with Shaker-type Auto Dust Collector The general description and functionality of this system is similar to the Vibra-Pulse system described in section 7 above. However, instead of two timed solenoids, this system operates a shaker motor for a fixed (adjustable) period.
8.6 Troubleshooting This is again similar to a standard system, with the exception that the shaker motor may fail causing an overload trip. The root cause for such a failure must be determined before attempting to reset the overload. 9 Wet Cleaning – Enhanced Control System This control system is a factory- or field-installed enhancement to a standard control system for wet col- lectors, the standard for which comprises a motor starter and a mechanical float for water level control.
10 Appendix The Appendix comprises system drawings as follows Appendix 1 – Common Drawings 10.1 Model 13-12 – Type 1 System Specification Drawing 10.2 Model 13-13 – Type 2 System Specification Drawing 10.3 Model 13-14 – Type 3 System Specification Drawing 10.4...
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ALL PBs MOMENTARY CONTACT STOP HIGH HIGH 0VDC GATE OPEN DI1 1N4002 R H I DI2 1N4002 0VDC +24VDC 24VDC GREEN LED INDICATOR (TYP.) +24VDC LEGEND CONNECTION NO CONNECTION EXTERNAL (FIELD) 0VDC WIRING WIRE NUMBER...
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