WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor E* PI GT A I L * P UR CA E QPMA A BL EU RO YL * Easy-to-set automatic Expert-style Static and Dynamic TEACH options, multiple Single-Point Set options, plus manual adjustment for fine tuning * Smart power-control algorithm to maximize performance in low-contrast applications * Normal mode provides 1.8 ms sensing response with improved crosstalk avoidance routine (for two sensors) and improved fluorescent light immunity * Selectable high-speed (HS) mode option for 300-microsecond response (crosstalk avoidance and fluorescent light immunity disabled) * Easy push-button Dark Operate/Light Operate select, output OFF-delay, and operating speed setup * Powerful, highly collimated visible red sensing beam * Easy-to-read operating status indicators, with 8-segment bar graph display * Bipolar discrete outputs, PNP and NPN * Selectable 30-millisecond OFF-delay * Compact housing, mounting versatility - via popular 30 mm threaded barrel or side-mount * Tough ABS housing is rated IEC IP67; NEMA 6 * Models available with 2 m or 9 m (6.5 ft or 30 ft) cable or integral quick-disconnect *C -S T ExpertTM diffuse-mode sensor with a visible red beam L L F A C T O RY Models Range Cable QS30EDV High-Speed Mode: 1,100 mm (43 inches Normal Mode: 1,400 mm (55 inches) 2 m (6.5 ft) 5-wire cable QS30EDVQ Integral 5-pin Euro-style QD Supply Voltage Output Type 10 to 30V dc Bipolar NPN/PNP Standard 2 m (6.5 ft) cable models are listed. To order the 9 m (30 ft) cable model, add suffix "W/30" (QS30EDV W/30). A model with a QD connector requires a mating cable; see Accessories on page 10. 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 deenergized sensor output condition. Overview The QS30EDV is an easy-to-use diffuse-mode sensor. It provides high-performance sensing in low-contrast applications. Its visible red beam provides easy sensor alignment. The sensor offers multiple configuration options, in addition to manual fine adjustment, remote programming, and security lockout options. The sensor features bipolar outputs, one each NPN and PNP. The sensor's compact housing has a large, easy-to-see bar graph display plus bright LEDs for easy configuration and status monitoring during operation. LEDs 1 through 4 of the bar graph display also show configuration status during setup. The sensor can be side-mounted, using its integral mounting holes, or front-mounted, via its 30 mm threaded barrel. P/N 127755 Rev. C Output LED (yellow) Power ON LED (green) Configuration push buttons Switching threshold Bargraph display(red) LEDs 1-4 also display configuration status 4/1/2013 0 127755 5 WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor Sensor Configuration Sensor configuration is accomplished through TEACH or Set options, plus Setup mode. After TEACH or Set have defined the sensing parameters, Setup mode may be used to enable the delay, to change the Light Operate/Dark Operate status, or to select the high-speed response option (HS). Manual Adjust may be used to fine-tune the thresholds (see Bar Graph Indicator Functions on page 8). Two push buttons, Dynamic (+) and Static (-), or the remote wire, may be used to access and set the parameters. Sensor configuration options include: * Two-Point Static TEACH: a single switching threshold, determined by two taught conditions. * Dynamic (on-the-fly) TEACH: a single switching threshold, determined by multiple sampled conditions. * Window Set: a sensing window, centered on a single sensing condition. * Light Set and Dark Set: a single switching threshold, offset from a single sensing condition. Remote Configuration The remote function may be used to configure the sensor remotely or to disable the push button for security. Connect the gray wire of the sensor to ground (0V dc), with a remote programming switch connected between them. 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 where: 0.04 seconds "T" 0.8 seconds Returning to Run Mode Configuration modes each may be exited either after the 60-second time-out or by exiting the process in one of the two following ways: * In static TEACH or SET modes, press and hold the Static (-) button (or hold the remote line) for 2 seconds. The sensor returns to Run mode without saving any new settings. * In SETUP mode, press and hold both the Static (-) and Dynamic (+) buttons (or hold the remote line) for 2 seconds. The sensor returns to Run mode and saves the current setting. Two-Point Static TEACH (Threshold) * Sets a single switching threshold (switching point) * Threshold position is adjustable using "+" and "-" buttons (Manual Adjust). * Recommended for applications where two conditions can be presented by the user. Two-Point TEACH is the traditional configuration method. The sensor locates a single 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. The first condition taught is the ON condition. The Output ON and OFF conditions can be reversed by changing Light/Dark Operate status in Setup Mode. 2nd Taught Condition 1st Taught Condition Sensor positions threshold midway between taught conditions Output OFF Darkest (no signal) Output ON Position adjusted by Manual Adjust Most Light (saturated signal) Two-Point TEACH and Manual Adjust Using Manual Adjust with Two-Point TEACH moves the switching threshold position. The lighted LED on the bar graph moves to exhibit the received signal, relative to the threshold. Bargraph LED (Following TEACH) 6 to 8 Excellent: Very stable operation. 4 to 5 Good: Minor variables will not affect sensing reliability. 2 to 3 Low: Minor sensing variables may affect sensing reliability. 1 2 Relative Signal Difference/Recommendation Unreliable: Consider an alternate sensing scheme. www.bannerengineering.com - tel: 763-544-3164 P/N 127755 Rev. C WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor Push Button Remote Line 0.04 seconds "Click" 0.8 seconds 0.04 seconds T 0.8 sec- Result onds Access TEACH Mode No action required; sensor is Power LED: OFF Press and hold Static (-) button ready for 1st TEACH condi- Output LED: ON for more than 2 seconds tion. Bar graph: #5 and 6 alternately flash TEACH Output ON Condition Present Output ON condition and click the Static (-) button TEACH Output OFF Condition Present Output OFF condition and click the Static (-) button Present Output ON condition Power LED: OFF and single-pulse the remote Output LED: Flash, then OFF line Bar graph: #5 and 6 alternately flash Present Output OFF condition and single-pulse the remote line TEACH Accepted Power LED: ON Bar graph: One LED flashes to show relative contrast (good signal difference shown; see table above) Sensor returns to RUN mode TEACH Unacceptable Power LED: OFF Bar graph: #1, 3 and 5, 7 alternately flash to show failure Sensor returns to "TEACH Output ON Condition" Dynamic TEACH and Adaptive Thresholds * * * * * Teach on-the-fly * Sets a single switching threshold (switching point) * Threshold position is adjustable using "+" and "-" buttons (Manual Adjust) * Recommended for applications where a machine or process may not be stopped for teaching. Dynamic TEACH is a variation of two-point TEACH. It programs the sensor during actual machine run conditions, taking multiple samples of the light and dark conditions and automatically setting the threshold at the optimum level. Dynamic TEACH activates the sensor's adaptive threshold system, which continuously tracks minimum and maximum signal levels, and automatically maintains centering of the threshold between the light and dark conditions. The adaptive threshold system remains in effect during Run mode. The adaptive routine saves to non-volatile memory at least once per hour. Darkest Taught Condition Lightest Taught Condition Sensor positions threshold midway between taught conditions Output OFF Darkest (no signal) Output ON Position adjusted by Manual Adjust Most Light (saturated signal) When Dynamic TEACH mode is used, the output ON state (Light or Dark Operate) will remain as it was last programmed. To change the output ON state, use Setup Mode. The sensing threshold may be adjusted (fine-tuned) whenever the sensor is in RUN mode by clicking the "+" and "-" buttons. However, when a manual adjustment is made, the adaptive threshold system is disabled (cancelled). Bar Graph LED (Following TEACH) P/N 127755 Rev. C Relative Signal Difference/Recommendation 6 to 8 Excellent: Very stable operation. 4 to 5 Good: Minor variables will not affect sensing reliability. 2 to 3 Low: Minor sensing variables may affect sensing reliability. www.bannerengineering.com - tel: 763-544-3164 3 WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor Bar Graph LED (Following TEACH) 1 Relative Signal Difference/Recommendation Unreliable: Consider an alternate sensing scheme. Push Button Remote Line Result Access Dynamic TEACH Mode Press and hold Dynamic (+) push button for more than 2 seconds Hold the remote line low (to ground) for more than 2 seconds Power LED: OFF Output LED: OFF Bargraph: #7 and 8 alternately flash TEACH Sensing Conditions Continue to hold remote line Continue to hold push button Power LED: OFF low (to ground) and present (+) and present the Output ON Output LED: OFF the Output ON and OFF conand OFF conditions Bargraph: #7 and 8 alternately flash ditions Return to Run Mode Release push button (+) Release the remote line/ switch TEACH Accepted Power LED: ON Bargraph: One LED flashes to show relative contrast (good signal difference shown; see table above) Sensor returns to RUN mode with new settings TEACH Unacceptable Power LED: OFF Bargraph: #1, 3 and 5, 7 alternately flash to show failure Sensor returns to RUN mode without changing settings Single-Point Window Set * Sets a single ON condition that extends 12.5% above and below the taught condition. * All other conditions (lighter or darker) result in OFF output * Sensing window size (sensitivity) is adjustable using the "+" and "-" buttons (Manual Adjust) * Recommended for applications where the target to be sensed may not always appear in the same place, or when other signals may appear. Single-Point Set designates a sensing window, by setting two switching thresholds at 12.5% above and below the presented condition. The Output ON condition is inside the window, and the Output OFF conditions are outside the window when Light Operate is selected. Output ON and OFF conditions can be reversed by changing Light/Dark Operate status in Setup mode. Sensing window size adjusted by Manual Adjust Sensor positions window thresholds 12.5% from the presented condition Output OFF Darkest (no signal) Output ON Condition Presented Output OFF Most Light (saturated signal) Single-Point Window Set and Manual Adjust Using Manual Adjust with Single-Point Window Set expands or contracts the size of the window. The lighted LEDs on the light bar separate to a greater or lesser extent to exhibit the relative sensing window size. 4 www.bannerengineering.com - tel: 763-544-3164 P/N 127755 Rev. C WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor Push Button Remote Line 0.04 seconds "Click" 0.8 seconds 0.04 seconds T 0.8 seconds Press and hold Static (-) Access Set Mode push button for more than 2 seconds Single-pulse the remote line Result Power LED: OFF Output LED: ON (Push Button) Output LED: OFF (Remote) Bar graph: #5 and 6 alternately flash Threshold Conditions Accepted Power LED: ON Bar graph: 2 indicators flash together to show the threshold conditions are accepted Sensor returns to RUN mode with new settings Present the sensing condiSet Sensing Contion and double-click the dition Static (-) push button Present the sensing condition and double-pulse the reThreshold Conditions Unacceptable mote line Power LED: OFF Bar graph: #1, 3 and 5, 7 alternately flash to show failure Sensor returns to "SET Sensing Condition" Single-Point Light Set * Sets a threshold 12.5% below the taught condition. * Any condition darker than the threshold condition causes the output to change state. * Threshold position is adjustable using the "+" and "-" buttons (Manual Adjust). * Recommended for applications where only one condition is known, for example a stable light background with varying darker targets. A single sensing condition is presented, and the sensor positions a threshold 12.5% below the presented condition. When a condition darker than the threshold is sensed, the output either turns ON or OFF, depending on the Light/Dark Operate setting (see Setup Mode on page 6). Threshold position adjusted by Manual Adjust Sensor positions threshold 12.5% below the presented condition Output OFF Darkest (no signal) Output ON Condition Presented Most Light (saturated signal) Light Set and Light/Dark Operate Selection In Light Operate mode, Light Set teaches the Output ON condition. In Dark Operate mode, Light Set teaches the Output OFF condition. Access Set Mode Push Button Remote Line 0.04 seconds "Click" 0.8 seconds 0.04 seconds T 0.8 seconds Press and hold Static (-) push button for more than 2 seconds Single-pulse the remote line Set Sensing Condi- Present the sensing condition tion and click the Static (-) push button four times P/N 127755 Rev. C Result Power LED: OFF Output LED: ON (Push Button) Output LED: OFF (Remote) Bar graph: #5 and 6 alternately flash Present the sensing con- Threshold Condition Accepted dition and four-pulse the Power LED: ON remote line Bar graph: Indicators #5-8 flash together to show that the threshold condition is accepted Sensor returns to RUN mode with new settings www.bannerengineering.com - tel: 763-544-3164 5 WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor Push Button Remote Line 0.04 seconds "Click" 0.8 seconds 0.04 seconds T 0.8 seconds Result Threshold Condition Unacceptable Power LED: OFF Bar graph: #1, 3 and 5, 7 alternately flash to show failure Sensor returns to "SET Sensing Condition" Single-Point Dark Set * Sets a threshold 12.5% above the taught condition. * Any condition lighter than the threshold condition causes the output to change state. * Threshold position is adjustable using the "+" and "-" buttons (Manual Adjust). * Recommended for applications where only one condition is known, for example a stable dark background with varying lighter targets. A single sensing condition is presented, and the sensor positions a threshold 12.5% above the taught condition. When a condition lighter than the threshold is sensed, the output either turns ON or OFF, depending on the Light/Dark Operate setting (see Setup Mode on page 6). Threshold position adjusted by Manual Adjust Sensor positions threshold 12.5% above the presented condition Output OFF Darkest (no signal) Condition Presented Output ON Most Light (saturated signal) Dark Set and Light/Dark Operate Selection In Light Operate mode, Dark Set teaches the Output OFF condition. In Dark Operate mode, Dark Set teaches the Output ON condition. Access Set Mode Set Sensing Condition Push Button Remote Line 0.04 seconds "Click" 0.8 seconds 0.04 seconds T 0.8 seconds Press and hold the Static (-) push button for more than 2 seconds Present the sensing condition and click the Static (-) push button five times Single-pulse remote line Result Power LED: OFF Output LED: ON (Push Button) Output LED: OFF (Remote) Bar graph: #5 and 6 alternately flash Threshold Condition Accepted Power LED: ON Bar graph: Indicators #1-4 flash together to show that the threshold condition is accepted Present the sensing condition and five-pulse Sensor returns to Run mode with new settings the remote line Threshold Condition Unacceptable Power LED: OFF Bar graph: #1, 3 and 5, 7 alternately flash to show failure Sensor returns to "Set Sensing Condition" Setup Mode Setup mode is used to change sensor output response for: * Light or Dark operate * 30-millisecond pulse stretcher (OFF delay), if required. * 300 s high-speed response 6 www.bannerengineering.com - tel: 763-544-3164 P/N 127755 Rev. C WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor If Setup mode programming is interrupted and remains inactive for 60 seconds, the sensor returns to Run mode with the most recent settings (e.g., exits and saves current selection). Setup mode operates in the "background" while the outputs are active; changes are updated instantly. Press and hold both push buttons (+ and -) for more than 2 sec to access Setup Mode Setup status indicators: High speed (HS) Delay Dark operate (DO) Light operate (LO) Access Setup Mode Push Button Remote Line 0.04 seconds "Click" 0.8 seconds 0.04 seconds T 0.8 seconds Press and hold both push butDouble-pulse the remote tons (+ and -) for more than 2 line seconds Result Green Power LED turns OFF Output LED remains active Status indicators (bar graph #1-4) flash current setup Sensor rotates through eight setting combinations, in the following order: 1. Normal Speed - No Delay - LO* Pulse the remote line until 2. Normal Speed - No Delay - DO the LEDs show the desired 3. Normal Speed - Delay - LO Click either push button (+ or Select Setting Combisettings. 4. Normal Speed - Delay - DO -) until the LEDs show the denation NOTE: Double-pulsing the sired settings 5. High Speed - No Delay - LO remote line causes the set6. High Speed - No Delay - DO ting to "back up" one step. 7. High Speed - Delay - LO 8. High Speed - Delay - DO * Factory default setting Return to Run Mode Press and hold both push butHold the remote line low tons (+ and -) for more than 2 for more than 2 seconds seconds Green Power LED turns ON Sensor returns to RUN mode with new settings Manual Adjust Manual Adjust is used during Run mode and is accomplished via the push buttons only. Its behavior depends on whether a switching threshold or a sensing window is used. Switching Threshold: * Fine-tunes sensing sensitivity * Press "+" to increase; press "-" to decrease Sensing Window: * Adjusts sensing window size (tolerance) for the single-point target condition * Press "+" to increase; press "-" to decrease The lighted bargraph LEDs move to reflect the increase or decrease. Enabling or Disabling the Push Button In addition to its programming function, the remote line may be used to disable the push buttons for security. Disabling the push buttons prevents undesired tampering with the sensor configuration settings. 1. Connect the sensor's gray wire. 2. Four-pulse the remote line to enable or disable the push button. P/N 127755 Rev. C www.bannerengineering.com - tel: 763-544-3164 7 WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor The sensor toggles between enable and disable settings and returns to RUN mode. Bar Graph Indicator Functions Run Mode. The lighted bar graph segment represents relative distance from the cutoff point. Its behavior depends on whether a sensing window or a sensing threshold is taught. Sensing Window Switching Threshold More light Signal intensity Above window Above threshold Inside window Below window Below threshold Less light Signal intensity Specifications General Performance Sensing Beam 660 nm visible red Power Supply voltage: 10 to 30V dc (10% max. ripple) @ 25 mA max current, exclusive of load Supply protection circuitry: Protected against reverse polarity, over voltage, and transient voltages Delay at power-up: 250 ms; outputs do not conduct during this time Adjustments 2 push buttons and remote wire Easy push-button configuration; manually adjust (+/-) cutoff (push buttons only); Light Operate/Dark Operate and OFF-delay configuration options (push buttons only); Push-button lockout (from remote wire only) Indicators 8-segment red bar graph: distance relative to cutoff point Green LED: Power ON Yellow LED: Output conducting Construction ABS plastic housing; acrylic lens cover Connections 5-conductor 2 m (6.5 ft) PVC cable, 9 m (30 ft) PVC cable, or 5-pin integral Euro-style quick-disconnect fitting 8 Output Configuration Bipolar: 1 current sourcing (PNP) and 1 current sinking (NPN) Output Ratings 150 mA maximum load (derate ~ 1 mA/C above 25 C) OFF-state leakage current: < 50 A at 30V dc ON-state saturation voltage (NPN): < 200 mV @ 10 mA; < 1V @ 150 mA ON-state saturation voltage (PNP): < 1.25V @ 10 mA; < 2V @ 150 mA Output Protection Protected against output short-circuit, continuous overload, transient over-voltages, and false pulse on power up Output Response Time High-Speed Mode: 300 microseconds Normal Mode: 1.8 ms Repeatability High-Speed Mode: 100 microseconds Normal Mode: 150 microseconds www.bannerengineering.com - tel: 763-544-3164 P/N 127755 Rev. C WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor Environmental Certifications Rating IP67, NEMA 6 Operating Conditions Temperature: -10 to +55 C (+14 to 122 F) Max. relative humidity: 90% @ 55 C (non-condensing) Vibration and Mechanical Shock All models meet Mil. Std. 202F requirements. Method 201A (Vibration: 10 to 60 Hz max. double amplitude 0.06", maximum acceleration 10G). Also meets IEC 947-5-2 requirements: 30G, 11 ms duration, half sine wave. Performance Curves Performance curves are based on the use of a 90% reflectance white test card. 10000 QS30EDV Series E X C E S S G A I N High Speed Normal Speed 1000 B E A M 100 W I D T H 10 1 10 mm (0.4") 100 mm (3.9") QS30EDV Series 12 mm 1000 mm (39.4") High Speed Normal Speed 8 mm 4 mm 0.47" 0.31" 0.16" 0 0 -4 mm -0.16" -8 mm -0.31" -12 mm -0.47" 10000 mm (393.7") 0 300 mm (11.8") 600 mm (23.6") 900 mm (35.4") 1200 mm (47.2") 1500 mm (59.0") DISTANCE DISTANCE Figure 1. Excess Gain Curve Figure 2. Beam Pattern Dimensions Cabled Models QD Models 22.0 mm (0.87") 35.0 mm (1.38") 3.5 mm (0.14") 12.5 mm (0.49") Receiver 17.6 mm (0.69") 1.3 mm (0.05") static dynamic 32.5 mm (1.28") 5.0 mm (0.20") HS DO LO 2 x o3.3 mm (0.125") max. torque 0.7 Nm (6 in lbs) P/N 127755 Rev. C 44.0 mm (1.73") 33.0 mm (1.30") www.bannerengineering.com - tel: 763-544-3164 M30 x 1.5 Thread max. torque 6 Nm (53 in lbs) with included 30 mm mounting nut Emitter 28.8 mm (1.13") 13.0 mm (0.51") 9 WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor Cabled Models QD Models Hardware included: (10) M3 x 0.5 x 28 stainless steel machine screws, nuts and washers Hookups Cabled Models bn bu wh bk gy Load Load QD Models bn bu wh bk gy + 10 - 30V dc - 150 mA max. load Remote Teach Load Load + 10 - 30V dc - 150 mA max. load Remote Teach Accessories 5-Pin Threaded M12/Euro-Style Cordsets (Single Ended) Model Length MQDC1-501.5 0.50 m (1.5 ft) MQDC1-506 1.83 m (6 ft) MQDC1-515 4.57 m (15 ft) MQDC1-530 9.14 m (30 ft) MQDC1-506RA 1.83 m (6 ft) MQDC1-515RA 4.57 m (15 ft) Style Dimensions 9.14 m (30 ft) 2 44 Typ. 1 Straight 3 M12 x 1 o 14.5 4 5 1 = Brown 2 = White 3 = Blue 4 = Black 5 = Gray 32 Typ. [1.26"] 30 Typ. [1.18"] Right-Angle MQDC1-530RA Pinout (Female) M12 x 1 o 14.5 [0.57"] Brackets SMBQS30L * Right-angle bracket for cable sensor models * Clearance for M4 (#8) hardware * 12 tilt adjustment * 14-ga. stainless steel SMBQS30LT * Tall right-angle bracket for QD models * 8 tilt adjustment * 14-ga. stainless steel Hole center spacing: A to B=35.0 Hole size: A=o 4.3, B=o 4.25x16.3 Hole center spacing: A to B=35.0 Hole size: A=o 4.3, B=o 4.25x16.3 SMBQS30Y SMBQS30YL 10 www.bannerengineering.com - tel: 763-544-3164 P/N 127755 Rev. C WORLD-BEAM QS30EDV Expert Diffuse-Mode Sensor Brackets * Heavy-duty die-cast bracket * M18 vertical mount option * 8 tilt adjustment with cabled units * Includes nuts and lock washer * Heavy-duty die-cast bracket designed for industrial protection * M18 vertical mount option * Replaceable window * Includes nuts and lock washer Hole size: A=o 15.3 Hole size: A=o 15.3 Other compatible mounting brackets include: SMB30MM, SMB30SC, and SMB30A 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