WORLD-BEAM(R) QS18E Series Datasheet * * * * * * * * * Model Sensing Mode QS18EN6LP Easy-to-use Expert-style Static and Dynamic TEACH options, plus Window, Light, and Dark SET, via push button or remote input Smart power-control algorithm to maximize performance in low-contrast applications Easy push-button or remote sensor setup options: Dark-Operate/Light-Operate select Selectable 30 ms output OFF-delay Less than 1 millisecond output response for excellent sensing repeatability Tough ABS housing is rated IEC IP67; NEMA 6 Bright LED operating status indicators are visible from 360 Discrete PNP or NPN output, depending on model Multiple connection options available (see Models) Compact housing, easy barrel-mount (some models) or side-mount installation Range 660 nm Visible Red NPN 3.5 m (12 ft) 1 P QS18EP6LP POLAR RETRO Output PNP Model QS18EN6CV15 QS18EP6D QS18EN6DB 940 nm Infrared QS18EP6DB 500 mm (19.7 in) NPN QS18EN6CV45 PNP QS18EP6CV45 NPN QS18EN6FP PNP QS18EP6FP DIFFUSE Diffuse 300 mm (11.8 in) QS18EP6W NPN QS18EN6DV PNP QS18EP6DV NPN Plastic Fiber 43 mm (1.7 in) NPN Varies by mode and fiber optics used NPN 660 nm Visible Red PNP PNP NPN 600 mm (23.6 in) DIFFUSE PNP Convergent 660 nm Visible Red PLASTIC FIBER QS18EN6W Output 16 mm (0.65 in) CONVERGENT 800 mm (31.5 in) Range 660 nm Visible Red QS18EP6CV15 Polar Retro QS18EN6D Sensing Mode PNP Diffuse Standard 2 m (6.5 ft) cable models are listed. To order the 9 m (30 ft) cable model, add suffix "W/30" to the cabled model number. For example, QS18EN6FP W/30. Models with a QD connector require a mating cable. To To To To order order order order a a a a model model model model with with with with a a a a 4-pin 4-pin 4-pin 4-pin QD 150 mm (6") Euro-style pigtail, add suffix "Q5" (e.g., QS18EN6FPQ5). 150 mm (6") Pico-style pigtail, add suffix "Q" (e.g., QS18EN6FPQ). Integral Euro-style QD, add suffix "Q8" (e.g., QS18EN6FPQ8). Integral Pico-style QD, add suffix "Q7" (e.g., QS18EN6FPQ7). WARNING: Not To Be Used for Personnel Protection Never use this device as a sensing device for personnel protection. Doing so could lead to serious injury or death. This device does not include the self-checking redundant circuitry necessary to allow its use in personnel safety applications. A sensor failure or malfunction can cause either an energized or de-energized sensor output condition. 1 Specified using BRT-84 reflector (sold separately) P/N 136564 Rev. C 8 January 2014 0 136564 1 WORLD-BEAM(R) QS18E Series Overview of QS18E Expert Series Sensors 1 The QS18E Expert Sensors family of sensors provides high-performance sensing in a compact package. The sensors feature a discrete output (NPN or PNP, depending on model), two bright LEDs for easy status monitoring during configuration and operation, multiple configuration options, remote configuration, and security lockout options. 2 3 4 Figure 1. Sensor features 1. 2. 3. 4. 5. Amber output LED Green power indicator LED Receiver port Emitter port Configuration button Indicators (Two LEDs: One Green, One Amber) Sensor Condition (Run Mode) Green LED Amber LED Output OFF ON OFF Output ON ON ON Output ON, marginal signal ON Flashing Output Short Circuit Flashing OFF 5 Sensor Configuration Configure the sensor using any of five TEACH or Set options (by push button or the remote wire) to define the sensing limits. Use a Setup procedure to enable a 30 ms OFF-delay or to change the Light-/Dark-Operate setting (see QS18Expert Sensor Setup). Sensing limit configuration options include: * Static TEACH: one switching threshold, determined by two taught conditions * Dynamic (on-the-fly) TEACH: one switching threshold, determined by multiple sampled conditions * Light Set and Dark Set: one switching threshold, offset from a single sensing condition (the "dark" condition or the "light" condition; see Figure) * Window Set: a sensing window, centered around a single sensing condition The sensor's output is disabled during all TEACH and Set procedures, and is enabled upon return to Run mode. Following any TEACH or Set procedure other than Static TEACH, the Output ON condition (Light- or Dark-Operate setting) remains as it was last configured. To change that setting or the OFF-delay setting, see QS18Expert Sensor Setup. 2 www.bannerengineering.com - tel: 763-544-3164 Figure 2. Dark Sensing Condition P/N 136564 Rev. C WORLD-BEAM(R) QS18E Series Remote Configuration Use the remote function to configure the sensor remotely or to disable the push button for security. Connect the white wire of the sensor to ground (0V dc), through a remote programming switch. Pulse the remote line according to the diagrams in the configuration procedures. The length of the individual programming pulses is equal to the value T: 0.04 seconds T 0.8 seconds Push Button Enable/Disable The remote input may be used to disable the sensor push button to prevent unauthorized adjustment. Connect the white wire of the sensor as described above to perform the procedure below to either enable or disable the feature. Push Button Enable/Disable Push Button ( 0.04 seconds "Click" 0.8 seconds) Not available Remote Line ( 0.04 seconds T 0.8 seconds) From Run mode, four-pulse the remote line. T T T T T Result Sensor toggles between enable/disable settings and returns to RUN mode. Power LED: Flashes 3x, then ON Green T Output LED: OFF,2 then ON or OFF, depending on output state T Returning to RUN Mode without Saving Settings Exit Static TEACH and Set modes after the automatic 60-second time-out or by manually exiting the process. To manual exit, press and hold the push button (or hold the remote line low) for 2 seconds. The sensor returns to Run mode without saving any new settings. Sensor Setup Access setup functions directly from Run mode using the following procedures. 30 ms OFF-Delay (Pulse Stretcher) Enable/Disable Push Button (0.04 seconds "Click" 0.8 seconds) Remote Line (0.04 seconds T 0.8 seconds) Results From Run mode, six-click the push button. From Run mode, six-pulse remote line. Sensor toggles between enable/disable settings and returns to Run mode. T T T T T T T T T T T Power LED: Flashes 3x, then ON Green Output LED: Enabled - ON, 3 Disabled - OFF, 3 Then ON or OFF, depending on output state Light-Operate/Dark-Operate Select Push Button (0.04 seconds "Click" 0.8 seconds) Remote Line (0.04 seconds T 0.8 seconds) Results From Run mode, seven-click the push button. From Run mode, seven-pulse remote line. Sensor toggles between Light-/Dark-Operate settings and returns to Run mode. T T T T T T T T T T T T T Power LED: Flashes 3x, then ON Green Output LED: Light Operate - ON, 3 Dark Operate - OFF, 3 Then ON or OFF, depending on output state 2 Initial output LED condition is simultaneous with Power LED 3-flash 3 Initial Output LED condition is simultaneous with Power LED 3-flash. P/N 136564 Rev. C www.bannerengineering.com - tel: 763-544-3164 3 WORLD-BEAM(R) QS18E Series Static TEACH * 2nd Taught Condition 1st Taught Condition Sensor positions threshold between presented conditions Output OFF * Output ON Darkest (no signal) Most Light (saturated signal) * Static TEACH locates a single switching threshold (switchpoint) at the optimal location between the two taught conditions, with the Output ON condition on one side, and the Output OFF condition on the other. During Static TEACH, the first condition taught is the ON condition. Output ON and OFF conditions may be reversed by switching the TEACH order or by changing the Light-/Dark-Operate setting in setup mode (see Sensor Setup on page 3). Static TEACH is recommended for applications where two conditions can be presented individually. Figure 3. Static TEACH (Light Operate shown) 1. Access the Static TEACH Mode. Method Action Push Button Press and hold the push button 2 to 4 seconds. Remote Line Result The sensor waits for the first sensing condition. No action required; the sensor is ready for the first sensing condition. Power LED Indicator: OFF Output LED Indicator: Slow flash (1Hz) 2. Teach the first sensing condition. Method Action Push Button Present the first (ON) sensing condition, then click the push button. Remote Line Result Present the first sensing condition, then single-pulse the remote line. T Power LED Indicator: OFF Output LED Indicator: Double-flash 3. Teach the second sensing condition. Method Action Result Push Button Present the second (OFF) sensing condition, then click the push button. TEACH Accepted Power LED Indicator: Flashes 3 times, then solid green Output LED Indicator: OFF The sensor returns to Run mode with the new settings. Remote Line Present the second sensing condition, then single-pulse the remote line. T TEACH Not Accepted Power LED Indicator: OFF Output LED Indicator: Slow flash (1 Hz) The sensor returns to the wait state, ready for the first sensing condition. 4 www.bannerengineering.com - tel: 763-544-3164 P/N 136564 Rev. C WORLD-BEAM(R) QS18E Series Dynamic TEACH * Darkest Presented Condition Lightest Presented Condition * Sensor positions threshold between presented conditions * Output OFF Output ON Darkest (no signal) Most Light (saturated signal) * Dynamic TEACH sets a single switching threshold (switchpoint). Dynamic TEACH is used to teach during actual sensing conditions, taking multiple samples of the light and dark conditions and automatically setting the threshold at the optimum level. The Output ON state (Light- or Dark-Operate setting) remains as it was last configured. To change the Light-/Dark-Operate setting, see Sensor Setup on page 3. Dynamic TEACH is recommended for applications where a machine or process may not be stopped for teaching. Figure 4. Dynamic TEACH (Light Operate shown) 1. Access the Dynamic TEACH mode. Method Action Result Push Button Press and hold the push button for longer than 4 seconds. Remote Line Hold the remote line low (to ground) for longer than 2 seconds. 2 seconds Power LED Indicator: OFF Output LED Indicator: Quick flash (2 Hz) 2. Teach the sensing condition. Method Action Result Push Button Continue to hold the push button and present the Output ON and OFF conditions multiple times. Remote Line Continue to hold the remote line low (to ground) and present the Output ON and OFF conditions multiple times. Power LED Indicator: OFF Output LED Indicator: Quick flash (2 Hz) 3. Return to Run mode. Method Action Result Push Button Release the push button. TEACH Accepted Power LED Indicator: Flashes 3 times, then solid green Output LED Indicator: OFF4, then ON or OFF depending on the output state The sensor returns to Run mode with the new settings. Remote Line Release the remote line/switch. TEACH Not Accepted Power LED Indicator: Flashes 3 times, then solid green Output LED Indicator: ON4, then ON or OFF depending on the output state The sensor returns to Run mode without changing settings. 4 The initial output LED indicator condition is simultaneous with the power LED indicator 3-flash P/N 136564 Rev. C www.bannerengineering.com - tel: 763-544-3164 5 WORLD-BEAM(R) QS18E Series Light Set * * Sensor positions threshold 12.5% below the presented condition Output OFF Output ON Single Presented Condition Darkest (no signal) * Most Light (saturated signal) * Light Set sets a threshold approximately 12.5% below the presented sensing condition. Any condition darker than the threshold causes the output to change state. In Light-Operate mode, the presented condition is the Output ON condition. In Dark-Operate mode, the presented condition is the Output OFF condition. To change the Light-/Dark-Operate setting, see Sensor Setup on page 3. Light Set is recommended for applications where only one condition is known, for example a stable light background with varying darker targets, or in retroreflective applications. Figure 5. Light Set (Light Operate shown) 1. Access the Light Set mode. Method Action Push Button Press and hold the push button 2 to 4 seconds. Remote Line Result The sensor waits for the sensing condition. Power LED Indicator: OFF Output LED Indicator: Slow flash (1 Hz) The sensor waits for the sensing condition. T Single-pulse the remote line. Power LED Indicator: OFF Output LED Indicator: Double-flash 2. Set the sensing condition. Method Action Result Push Button Present the sensing condition, then four-click the push button. TEACH Accepted Power LED Indicator: Flashes 3 times, then solid green Output LED Indicator: OFF5, then ON or OFF, depending on the output state The sensor returns to Run mode with the new settings. Present the sensing condition, then four-pulse the remote line. Remote Line T T T T T T T TEACH Not Accepted Power LED Indicator: OFF Output LED Indicator: Slow flash (1 Hz) The sensor returns to the wait state, ready for the sensing condition. 5 The initial output LED indicator condition is simultaneous with the power LED indicator 3-flash. 6 www.bannerengineering.com - tel: 763-544-3164 P/N 136564 Rev. C WORLD-BEAM(R) QS18E Series Dark Set * * Sensor positions threshold 12.5% above the presented condition Output OFF Darkest (no signal) Single Presented Condition Dark Set sets a threshold approximately 12.5% above the presented sensing condition. Any condition lighter than the threshold causes the output to change state. In Light-Operate mode, the presented condition is the Output OFF condition. In Dark-Operate mode, the presented condition is the Output ON condition. To change the Light-/Dark-Operate setting, see Sensor Setup on page 3. Dark Set is recommended for applications where only one condition is known, for example a stable dark background with varying lighter targets, or when maximum excess gain is required. * Output ON Most Light (saturated signal) * Figure 6. Dark Set (Light Operate shown) 1. Access the Dark Set mode. Method Action Push Button Press and hold the push button 2 to 4 seconds. Remote Line Result The sensor waits for the sensing condition. Power LED Indicator: OFF Output LED Indicator: Slow flash (1 Hz) The sensor waits for the sensing condition. T Single-pulse the remote line. Power LED Indicator: OFF Output LED Indicator: Double-flash 2. Set the sensing condition. Method Action Result Push Button Present the sensing condition, then five-click the push button. TEACH Accepted Power LED Indicator: Flashes 3 times, then solid green Output LED Indicator: OFF6, then ON or OFF, depending on the output state Present the sensing condition, then five-pulse the remote line. Remote Line T T T T T The sensor returns to Run mode with the new settings. T T T T TEACH Not Accepted Power LED Indicator: OFF Output LED Indicator: Slow flash (1 Hz) The sensor returns to the wait state, ready for the sensing condition. 6 The initial output LED indicator condition is simultaneous with the power LED indicator 3-flash. P/N 136564 Rev. C www.bannerengineering.com - tel: 763-544-3164 7 WORLD-BEAM(R) QS18E Series Window Set * 12.5% Sensor positions window thresholds 12.5% from the presented condition Output OFF Darkest (no signal) Output ON Single Presented Condition * Output OFF * Most Light (saturated signal) In Window Set, the single ON condition window extends approximately 12.5% above and below the presented condition when Light Operate is selected. Output ON and OFF conditions may be reversed by changing the Light-/Dark-Operate setting (see Sensor Setup on page 3). Lighter or darker conditions outside of the window cause the output to change state. Window Set is recommended for applications where the target to be sensed may not always appear in the same place, or when other unwanted signals may appear. Figure 7. Window Set (Light Operate shown) 1. Access the Window Set mode. Method Action Push Button Press and hold the push button 2 to 4 seconds. Remote Line Result The sensor waits for the sensing condition. Power LED Indicator: OFF Output LED Indicator: Slow flash (1 Hz) The sensor waits for the sensing condition. T Single-pulse the remote line. Power LED Indicator: OFF Output LED Indicator: Double-flash 2. Set the sensing condition. Method Action Result Push Button Present the sensing condition, then doubleclick the push button. TEACH Accepted Remote Line Present the sensing condition, then doublepulse the remote line. Power LED Indicator: Flashes 3 times, then solid green Output LED Indicator: OFF7, then ON or OFF, depending on the output state T T T The sensor returns to Run mode with the new settings. TEACH Not Accepted Power LED Indicator: OFF Output LED Indicator: Slow flash (1 Hz) The sensor returns to the wait state, ready for the sensing condition. 7 The initial output LED indicator condition is simultaneous with the power LED indicator 3-flash. 8 www.bannerengineering.com - tel: 763-544-3164 P/N 136564 Rev. C WORLD-BEAM(R) QS18E Series Performance Curves Polarized Retroreflective Excess Gain Beam Pattern Diffuse (Based on use of 90% reflectance white test card.) Excess Gain Beam Pattern Excess Gain Beam Pattern Excess Gain Beam Pattern Convergent Excess Gain P/N 136564 Rev. C Beam Pattern www.bannerengineering.com - tel: 763-544-3164 9 WORLD-BEAM(R) QS18E Series Fiber Optic - Plastic Excess Gain Beam Pattern Excess Gain Beam Pattern Performance using Dark Set, performed in no-light condition. Wiring Diagrams Cabled wiring diagrams are shown. Quick disconnect (QD) wiring diagrams are functionally identical. NPN (Sinking) Outputs 1 1 + 10-30V dc - 3 4 PNP (Sourcing) Outputs 4 Load 2 + 10-30V dc - 3 2 Remote Programming (N.O.) Load Remote Programming (N.O.) Specifications Supply Voltage 10 to 30 V dc (10% maximum ripple) at less than 35 mA, exclusive of load; 10 to 24 V dc at > 55 C Supply Protection Circuitry Protected against reverse polarity and transient voltages Output Configuration Current sourcing (PNP) or current sinking (NPN), depending on model; Light- or dark-operate selectable; Selectable 30 ms output OFF-delay Rating: 100 mA max Off-state leakage current: less than 50 A @ 30 V dc (see Application Note 1) ON-state saturation voltage: less than 1.5 V @ 100 mA (1.7V for 30 ft cable models) Output Protection Circuitry Protected against false pulse on power-up and continuous overload or short-circuit of output Output Response NOTE: Momentary delay on power-up; output does not conduct during this time 600 s ON/OFF Construction ABS housing, PMMA lens Connections PVC-jacketed 4-conductor 2 m (6.5 ft) or 9 m (30 ft) unterminated cable, or 4-pin Euro-style or 4-pin Picostyle quick-disconnect (QD), either integral or 150 mm (6 in) pigtail, are available. QD cordsets are ordered separately. Operating Conditions Temperature: -20 C to 70 C (-4 F to 158 F) Relative Humidity: 90% @ 50 C (non-condensing) Application Notes If the push button does not appear to be responsive, perform the push button enable procedure To maintain backwards compatibility with earlier models, 3 remote line pulses or a push button hold followed by 3 push button clicks will perform a Dark SET. Certifications Repeatability 75 s 10 www.bannerengineering.com - tel: 763-544-3164 P/N 136564 Rev. C WORLD-BEAM(R) QS18E Series Dimensions All measurements are listed in millimeters (inches). Model Suffix E, EV, R, FF Model Suffix EB, RB 31.0 mm (1.22") 17.1 mm (0.67") 15.0 mm (0.59") Yellow LED Green LED 3.0 mm (0.12") Model Suffix DB, W 21.1 mm (0.82") 21.1 mm (0.82") 3.0 mm (0.12") 3.0 mm (0.12") Model Suffix FP 27.5 mm (1.09") 15.0 mm (0.59") 17.1 mm (0.67") 7.5 mm (0.30") 13.4 mm (0.53") 24.1 mm (0.95") 35.0 mm (1.38") 5.2 mm (0.21") 7.6 mm (0.30") O3.3 mm (0.13") Max. torque 0.9 Nm (8 lbf. in) Single-turn Sensitivity Adjustment 31.0 mm (1.22") QS18...FP Fiber Installation Model Suffix F Model Suffix CV15, CV45, D, LV, LP A C 3.0 mm (0.12") CV Models: 33.2 mm (1.31") 17.1 mm (0.67") 36.9 mm (1.45") M18x1 Thread Max. torque 2.3 Nm (20 lbf. in) A. Slide the fiber clip to open. B. Insert fiber ends into each port, as far as they will go. C. Slide the fiber clip closed, locking fibers into position. 19.8 mm (0.78") *Model Suffix Q *Model Suffix Q5 *Model Suffix Q7 *Model Suffix Q8 (e.g. QS186EQ) (e.g. QS186EQ5) (e.g. QS186EQ7) (e.g. QS186EQ8) Slot for Fiber Clip M18 x 1 Jam Nut Packing List Sensor M18 x 1 jam nut M3 hardware packet Installation sheet P/N 63687 24.2 mm(0.95") 8.0 mm(0.32") B 41.5 mm (1.63") M3 2- 2- 2- Hardware Packet Contents: M3 x 0.5 x 20 mm SS screw M3 x 0.5 SS hex nut M3 SS washer 150 mm (6") Euro-style Pigtail 150 mm (6") Pico-style Pigtail 49 mm (1.93") Integral 4-pin Pico-Style QD Integral 4-pin Euro-Style QD Accessories 4-Pin Snap-on M8/Pico-Style Cordsets Model Length Style PKG4-2 2.00 m (6.56 ft) Straight Dimensions Pinout 32 Typ. 4 o 9.0 PKW4Z-2 2.00 m (6.56 ft) Right-Angle 29 Typ. 15 Typ. 2 1 3 1 2 3 4 = = = = Brown White Blue Black o 10.9 P/N 136564 Rev. C www.bannerengineering.com - tel: 763-544-3164 11 WORLD-BEAM(R) QS18E Series 4-Pin Threaded M12/Euro-Style Cordsets Model Length Style MQDC-406 1.83 m (6 ft) MQDC-415 4.57 m (15 ft) MQDC-430 9.14 m (30 ft) MQDC-450 15.2 m (50 ft) MQDC-406RA 1.83 m (6 ft) MQDC-415RA 4.57 m (15 ft) MQDC-430RA 9.14 m (30 ft) MQDC-450RA 15.2 m (50 ft) Dimensions Pinout 44 Typ. 2 1 Straight M12 x 1 o 14.5 3 4 1 2 3 4 32 Typ. [1.26"] = = = = Brown White Blue Black 30 Typ. [1.18"] Right-Angle M12 x 1 o 14.5 [0.57"] SMB312S * B Stainless steel 2-axis, side-mount bracket 46 C A 32 20 SMBQS18DIN * Right-angle bracket assembly for mounting on 35 mm DIN rail * 300 series stainless steel and glass filled nylon; zinc-plated screws A = 4.3 x 7.5, B = diam. 3, C = 3 x 15.3 SMBQS18Y * Die-cast bracket for 18 mm holes * Includes metal hex nut and lock washer * Allows 8 for cabled sensors Hole size: A = o 15.3 SMB18A * Right-angle mounting bracket with a curved slot for versatile orientation * 12-ga. stainless steel * 18 mm sensor mounting hole * Clearance for M4 (#8) hardware 30 C A 41 B 46 Hole center spacing: A to B = 24.2 Hole size: A = o 4.6, B = 17.0 x 4.6, C = o 18.5 12 www.bannerengineering.com - tel: 763-544-3164 P/N 136564 Rev. C WORLD-BEAM(R) QS18E Series SMB4050YL * Heavy-duty die-cast bracket for industrial protection * Replaceable window for use with some sensor models * M18 vertical mounting option * Nut and lock washer included SMB3018SC * 18 mm swivel side or barrel-mount bracket * Black reinforced thermoplastic polyester * Stainless steel swivel locking hardware included 67 B 59 29 A Hole center spacing: A = 50.8 Hole size: A = o 7.0, B = o 18.0 A = o 15.3 Additional available brackets: SMB46A, SMB18SF, SMBQS18RA, SMB18FA, SMBQS18A For a list of reflectors or fiber optic assemblies, refer to the Accessories section of your current Banner Sensors catalog or visit www.bannerengineering.com for complete information. Banner Engineering Corp Limited Warranty Banner Engineering Corp. warrants its products to be free from defects in material and workmanship for one year following the date of shipment. Banner Engineering Corp. will repair or replace, free of charge, any product of its manufacture which, at the time it is returned to the factory, is found to have been defective during the warranty period. This warranty does not cover damage or liability for misuse, abuse, or the improper application or installation of the Banner product. THIS LIMITED WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED (INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), AND WHETHER ARISING UNDER COURSE OF PERFORMANCE, COURSE OF DEALING OR TRADE USAGE. This Warranty is exclusive and limited to repair or, at the discretion of Banner Engineering Corp., replacement. IN NO EVENT SHALL BANNER ENGINEERING CORP. BE LIABLE TO BUYER OR ANY OTHER PERSON OR ENTITY FOR ANY EXTRA COSTS, EXPENSES, LOSSES, LOSS OF PROFITS, OR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES RESULTING FROM ANY PRODUCT DEFECT OR FROM THE USE OR INABILITY TO USE THE PRODUCT, WHETHER ARISING IN CONTRACT OR WARRANTY, STATUTE, TORT, STRICT LIABILITY, NEGLIGENCE, OR OTHERWISE. Banner Engineering Corp. reserves the right to change, modify or improve the design of the product without assuming any obligations or liabilities relating to any product previously manufactured by Banner Engineering Corp. www.bannerengineering.com - tel: 763-544-3164