IMPORTANT INFORMATION PAGE Table of Contents Important Information ..................................7 Trademark & Copywrite ..................................8 Warranty Information ..................................9 Sales, Application & Support ................................10 Sales & Application ..................................10 Customer Service ..................................... 10 Technical Support .................................... 10 Reference Materials ..................................11 EU Headquarters .....................................
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IMPORTANT INFORMATION PAGE OEM p250 front panel ..................................29 OEM p250 rear panel ..................................30 Start-up and pulsed operation ................................ 31 Initial Start-up ....................................31 Technical Reference ..................................32 Technical overview ..................................33 Laser design ..................................... 33 Beam delivery optics and setup ............................... 36 Focusing optics ....................................
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IMPORTANT INFORMATION PAGE Maintenance & Troubleshooting ..............................88 Maintenance ....................................88 Daily inspections ....................................89 Storage/shipping ..................................... 89 Cleaning guidelines ..................................90 Required cleaning materials ................................91 Cleaning optics ....................................91 Troubleshooting ....................................92 Operational flowchart ..................................93 Status LED’s ..................................... 94 Troubleshooting Status LED’s ................................
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IMPORTANT INFORMATION PAGE Figure 4-5 Typical power curve................................ 44 Figure 4-6 Representative output energy profile 5% duty cycle, 100Hz, time base 200 μs/Div............. 45 Figure 4-7 Representative output energy profile 5% duty cycle, 1kHz, time base 50 μs/Div............45 Figure 4-8 Representative output energy profile 5% duty cycle, 10kHz, 50 μs/Div time base.
IMPORTANT INFORMATION PAGE Important Information For your protection, carefully read these instructions before installing and operating the scan head. Retain these instructions for future reference. Novanta reserves the right to update this user manual at any time without prior notification. If product ownership changes, this manual should accompany the product.
PAGE Customer Support Before contacting Novanta for assistance, review appropriate sections in the manual that may answer your questions. After consulting this manual, please contact one of our worldwide offices between 9 AM and 5 PM local time. Americas, Asia Pacific Novanta Headquarters, Bedford, USA Phone: +1-781-266-5700 Email: photonics@novanta.com...
SALES, APPLICATION & SUPPORT PAGE Sales, Application & Support Novanta Sales and Support NOVANTA® worldwide headquarters are located north of Seattle in Mukilteo, Washington. U.S.A. Our mailing address is: NOVANTA 4600 Campus Place Mukilteo, WA 98275 U.S.A. Phone us at: 1.800.NOVANTA1 (1.800.796.7231) Outside the U.S.: +1.425.349.3500...
REFERENCE MATERIALS PAGE Reference Materials Your Regional Sales Manager can provide reference materials including Outline & Mounting drawings, Operator’s Manuals, Technical Bulletins, and Application Newsletters. Most of these materials are also available directly from the NOVANTA web site at http://www.Novanta.com. EU Headquarters For assistance in Europe, contact NOVANTA®...
CONTENTS DESCRIPTION PAGE mounting the laser, use only one metric or SAE fastener per mounting tab on the baseplate. Do not use any type of jackscrew arrangement as this will twist the baseplate and may distort the tube. Contents Description Customer Communication Flier ‘Laser Web Guide’...
NOMENCLATURE PAGE Nomenclature The nomenclature section includes: • Model numbers • Laser versions The first three characters designate the Model Series, second three characters indicate the power option, the next character signifies the safety option which is an “S” (Standard) for OEM models. The next character indicates the model revision or laser build and the last three characters indicate the beam options where 10.6 is 10.6um.
LASER SAFETY INTRODUCTION PAGE Laser Safety Introduction Read the entire safety section. This will ensure you are familiar with the hazards and warnings prior to starting. • Hazard Information – includes equipment label terms and hazards, please familiarize yourself with all definitions and their significance.
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TERMS PAGE • Important Note: Content specific information and/or recommendations. Warning: Serious Personal Injury For laser systems being used or sold within the U.S.A., customers should refer to and follow the laser safety precautions described American National Standards Institute (ANSI) document Z136.1-2014, Safe Use of Lasers.
GENERAL HAZARDS PAGE General hazards Following are descriptions of general hazards and unsafe practices that could result in death, severe injury, or product damage. Specific warnings and cautions not appearing in this section are found throughout the manual. Warning: Serious Personal Injury Do not allow laser radiation to enter the eye by viewing direct or reflected laser energy.
DISPOSAL PAGE Disposal This product contains components that are considered hazardous industrial waste. If a situation occurs where the laser is rendered non-functional and cannot be repaired, it may be returned to NOVANTA ® who, for a fee, will ensure adequate disassembly, recycling and/or disposal of the product. Other hazards The following hazards are typical for this product family when incorporated for intended use: (A) risk of injury when lifting or moving the unit;...
ADDITIONAL LASER SAFETY INFORMATION PAGE (i) The shaping, grinding, or polishing of such lens or mirror or manufacturing processes other than the assembly of such lens or mirror into optical systems and devices without any alteration of the lens or mirror;...
AGENCY COMPLIANCE PAGE Agency compliance • Center for Devices and Radiological Health (CDRH) requirements. • Federal Communications Commission (FCC) requirements. • European Union (EU) requirements. NOVANTA® lasers are designed, tested, and certified to comply with certain United States (U.S.) and European Union (EU) regulations.
FEDERAL COMMUNICATIONS COMMISSION (FCC) REQUIREMENTS PAGE Federal Communications Commission (FCC) Requirements The United States Communication Act of 1934 vested the Federal Communications Commission (FCC) with the authority to regulate equipment that emits electromagnetic radiation in the radio frequency spectrum. The purpose of the Communication Act is to prevent harmful electromagnetic interference (EMI) from affecting authorized radio communication services.
European Union regulations. Electromagnetic Interference Standards NOVANTA p250 lasers have demonstrated performance characteristics that have met or exceeded the requirements of EMC Directive 2014/30/EU. The European Union’s Electromagnetic Compatibility (EMC) Directive, 2014/30/EU, is the sole Directive developed to address electromagnetic interference (EMI) issues in electronic equipment.
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EUROPEAN UNION (EU) REQUIREMENTS ROHS COMPLIANCE PAGE Table 2-1 Class 4 safety features. Required by: Available on: Feature Location Description CDRH EN60825-1 OEM P250 On/Off/Reset Key switch controls power to laser electronics. Key Keyswitch Rear Panel Control cannot be removed from switch in the “On”...
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EUROPEAN UNION (EU) REQUIREMENTS ROHS COMPLIANCE PAGE Required by: Available on: Feature Location Description CDRH EN60825-1 OEM P250 the laser tube rises above safe operating limits Illuminates green when laser temperature is Rear panel indicator within operating limits, Temp Indicator (Green/Red).
OPERATION PAGE Operation Use information in this section to familiarize yourself with p250 controls and indicators and to begin operating the laser. • Controls and indicators – displays and describes exterior controls and indicators on p250 lasers. • Initial start-up – Reference the appropriate Quick Start Guide on our website to learn how to start your p250 laser while verifying proper operation.
CONTROLS AND INDICATORS PAGE Controls and indicators • OEM p250 front panel • OEM p250 rear panel OEM p250 front panel Figure 3-1 OEM p250 front panel controls and indicators. Aperture Seal – prevents dust from damaging laser optics during shipping. Remove the red self- adhesive label before applying power to the laser.
OEM P250 REAR PANEL PAGE OEM p250 rear panel Figure 3-2 P250 OEM p250 rear panel controls and indicators. WATER IN Port – provides a 12 mm inlet connection to the p250 laser’s cooling system for 12 mm O.D. cooling tubing. WATER OUT Port –...
START-UP AND PULSED OPERATION PAGE Start-up and pulsed operation Warning: Serious Personal Injury Remote interlock faults are not latched on OEM p250 lasers. Clearing the fault condition re-enables the RDY indicator and the laser will fire immediately provided the SHT indicator is lit and a PWM Command signal is applied.
TECHNICAL REFERENCE PAGE Technical Reference This section contains technical information for your p250 laser. • Technical overview – briefly describes p250’s technology and basic optical setup. • Controlling laser power – explains various aspects of p250 control signals. • User I/O connections – describes input/output signals and specifications for the 15-pin User I/O connector.
TECHNICAL OVERVIEW PAGE Technical overview • Laser design • RF power supply • Optical setup Laser design Optical resonator p250 lasers were developed using new technology developed by NOVANTA. This new technology, based on a hybrid waveguide/unstable resonator design, as shown in the figure below, enables NOVANTA to economically produce a symmetrical laser beam from a small but powerful laser capable of operating for many years with virtually no maintenance.
LASER DESIGN PAGE The structure of the resonator and internal beam conditioning optics combine to produce a near Gaussian mode quality (M factor) of <1.2. (p250 only) Beam waist diameter is typically 6.7 mm at the output aperture and full-angle divergence due to diffraction is approximately 2.5 milliradians (a 2.5 mrad divergence means that beam diameter increases 2.5 mm over every one-meter distance traveled-p250 only).
LASER DESIGN PAGE Converting the laser polarization from linear to circularly polarized light gives uniform cut quality in both axes. Circularly polarized light can be generated without significant power loss by using a circular polarizer (also known as a cut quality enhancer or CQE) or a simple phase retarding mirror. For the simplest and most cost-effective solution, a reflective phase retarder, laser polarization must be rotated by 45°.
BEAM DELIVERY OPTICS AND SETUP PAGE Caution: Possible Equipment Damage Use an optical isolator to protect the laser from damage. Failure to do this, may void the warranty as equipment damage can occur. Optical isolator An optical isolator is an optical component that allows only the desired linearly polarized light through, preventing unwanted feedback back into the laser.
FOCUSING OPTICS PAGE positioned only one meter away from the focusing optic and a small spot size is required, an expander/collimator is again the best solution to provide the required beam expansion before reaching the focusing optic. Focusing optics When selecting a focusing optic, the primary consideration should be material thickness and any vertical tolerances that occur during final part positioning rather than making a selection based only on minimum spot size.
RF POWER SUPPLY PAGE RF power supply p250 lasers are driven by two compact RF modules mounted internally in the laser chassis. Each RF module converts 48 VDC input power into a radio frequency (RF) signal that is then amplified and routed to its corresponding electrode structure in the laser tube where it excites the gas mixture in the tube to produce lasing.
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RF POWER SUPPLY PAGE columns is the Dew Point temperature in °F (or °C). The chiller’s temperature setpoint must be set above the dew point temperature. For example, if the air temperature is 85 °F (29 °C) and the relative humidity is 60%, then the dew point temperature is 70 °F (21 °C).
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RF POWER SUPPLY PAGE Table 4-3 Dew point temperatures (Continued).
CONTROLLING LASER POWER PAGE Controlling laser power This section includes the following subsections: • Control signals • Operating modes Important Note: Because all OEM p250 lasers incorporate a built-in tickle generator (2- 6μs pulses at 5kHz), there is no need to supply external tickle pulses. The application of external tickle pulses may affect the p250’s pulsing performance.
OPERATION MODES PAGE Operation modes Pulse Width Modulation (PWM) Pulse Width Modulation, or PWM, controls laser power by varying the duty cycle of p250’s RF amplifiers, which in turn control the time-averaged RF power applied to the laser. The percentage of optical output increases as duty cycle increases (at a constant PWM frequency) or as PWM frequency decreases (at a constant duty cycle).
OPERATION MODES PAGE As shown in the following figures, at low frequencies (approximately 1 kHz or less) and low duty cycles (approximately 20%), the p250 delivers maximum peak output power and energy while providing full depth of modulation (where the output rises from zero power to peak power on each pulse). As illustrated in the following figure, the p250 laser delivering full peak power (approximately 800 W) and peak pulse energy (at the maximum 1000 μs pulse width) with 100% depth of modulation.
OPERATION MODES PAGE Laser power is nominally linearly proportional to the PWM duty cycle. As PWM frequency increases, it will take a larger duty cycle before the laser starts to fire. However, at high PWM frequencies there is a significant threshold effect as shown in the figure below. Figure 4-5 Typical power curve.
OPERATION MODES PAGE Figure 4-8 Representative output energy profile 5% duty cycle, 10kHz, 50 μs/Div time base. Figure below Shows details of the output energy waveform at approximately 85% of peak power. Figure 4-9 Representative output energy profile-10% duty cycle, 1kHz, 200 μs/Div time base.
OPERATION MODES PAGE Figure below Shows pulsed output behavior with a 20% duty cycle at a frequency of 1kHz. Figure 4-12 Representative output energy profile-20% duty cycle, 1 kHz, 100 μs/Dev time base. Figure 4-13 Representative output energy profile-20% duty cycle, 5 kHz, 50 μs/Div time base.
OPERATION MODES PAGE Figure 4-20 Representative output energy profile-50% duty cycle, 100 kHz, 5.0 μs/Dev time base. Figure 4-21 Representative output energy profile-45% duty cycle, 10 kHz, 5.0 μs/Dev time base.
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OPERATION MODES PAGE The prior figures show the p250 laser delivering near peak output power. At a 10% duty cycle (at 1 kHz), the rise and fall time of the p250 limits depth of modulation to approximately 85% of peak power. At 20% duty cycle (at 1 kHz), p250 laser delivers peak output power at full depth of modulation.
USER I/O CONNECTIONS PAGE User I/O connections This section includes the following subsections: • User I/O connection summary • Input/output signals • Sample I/O circuits The PWM Command signal and all input/output (I/O) control signals are connected to the User I/O port. Please refer to the figure below for the 15-pin female D-type sub-miniature connector on the p250’s rear panel.
USER I/O CONNECTION SUMMARY PAGE User I/O connection summary The following user I/O pin descriptions table provides a quick reference summary to p250 User I/O connections. Table 4-4 User I/O pin descriptions.
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USER I/O CONNECTION SUMMARY PAGE Important Note: When connecting field wiring to the Remote Reset/Start Request input, use twisted pair and/or shielded cabling. Refer to NOVANTA Technical Bulletin #021 for details. Table 4-4 User I/O pin descriptions (Continued).
INPUT/OUTPUT SIGNALS PAGE Input/output signals The p250’s input/output signals are divided into three categories: auxiliary DC power, input signals, and output signals. Signals in each category are fully described in the following sections. Auxiliary DC power P250’s User I/O connector provides auxiliary DC power for driving external inputs or outputs connected to the User I/O port.
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INPUT/OUTPUT SIGNALS PAGE Table 4-4 User I/O pin descriptions (Continued). Input signals A total of four user inputs allow control of P250 lasers. Remote Interlock, Shutter Open Request, and Remote Reset/Start Request inputs are optoisolated and bi-directional, allowing for positive or negative polarity signal inputs.
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INPUT/OUTPUT SIGNALS PAGE Table 4-4 User I/O pin descriptions (Continued). Important Note: Use the interlock function to provide maximum operator safety. When the Remote Interlock input is opened (voltage source removed), the internal shutter automatically closes to block the beam path, the RDY LED turns Off, the SHT LED turns Off (regardless of the state of the Shutter Open Request input), and all DC power is removed from the RF boards.
INPUT/OUTPUT SIGNALS PAGE Table 4-4 User I/O pin descriptions (Continued). Warning: Serious Personal Injury The use of the Quick Start Plug bypasses the laser’s safety interlock function, potentially exposing personnel in the area to invisible infrared laser radiation. The Quick Start Plug is intended only for initial testing and troubleshooting by qualified personnel. In normal operation, the laser’s Remote Interlock input should be connected to the machine’s safety interlock circuitry.
INPUT/OUTPUT SIGNALS PAGE The following figure illustrates the input circuit’s equivalent internal schematic while the following table provides p250 input circuit specifications. Table 4-4 User I/O pin descriptions (Continued). Note: Shutter Open Request and Remote Interlock inputs are dependent control functions. The internal shutter mechanism will not activate (open) until a voltage is also applied to the Remote Interlock input (causing INT LED to illuminate green and RDY LED to turn On).
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INPUT/OUTPUT SIGNALS PAGE Table 4-5 Input circuit specifications. Important Note: The Remote Reset/Start Request input must not be sent until p250’s +5 VDC power sup-ply has stabilized (approximately 200 ms after DC power-up). Output signals p250’s five user outputs correspond to the status functions described below. These outputs are optoisolated solid-state relays that allow for high-side or low-side switching.
SAMPLE I/O CIRCUITS PAGE Sample I/O circuits Sample inputs The figure below illustrates one method of supplying a Remote Interlock signal using a customer- supplied limit switch. p250’s +24 VDC Auxiliary Power output powers the circuit. Note that Pin 4, +5 VDC Auxiliary Power, could have been used instead, depending on circuit voltage requirements.
SAMPLE I/O CIRCUITS PAGE A Programmable Logic Controller (PLC) can also drive p250 inputs. The figure below shows a typical method for connecting to a PLC output module when only one p250 input is used. Figure 4-29 PLC driven interlock signal. When multiple PLC outputs are used, connect p250 inputs to the PLC as shown in the figure below.
SAMPLE I/O CIRCUITS PAGE Sample outputs P250’s optoisolated, bi-directional switched outputs can drive small loads (50 mA max), PLC inputs, or relays that can control higher current loads. The following figure illustrates one method of controlling a remote warning lamp using power supplied by p250’s +24 VDC Auxiliary Power output. Remember to size current-limiting resistor, R1, so that the current draw does not exceed 50 mA.
SAMPLE I/O CIRCUITS PAGE Figure below illustrates how p250’s outputs can drive the DC Input Module of a Programmable Logic Controller (PLC). By supplying voltage (+VDC) to Pin 13, Output Common, each p250 output is independently switched to activate individual PLC inputs. Figure 4-33 p250 output driving PLC input module.
DC POWER CABLES PAGE DC power cables • DC power cables • DC voltage sense cable DC power cables The DC power cables shipped with p250 lasers are manufactured with 1/0 AWG wire to a standard length of 2.0 m (6.5 ft) or an optional length of 5.0 m (16 ft). Nominal finished O.D. is 14.9 mm (0.586") so the minimum bend radius must be greater than 12 cm (4.7 in).
P250 WEB INTERFACE PAGE p250 web interface • Accessing the p250 web page • Home page layout • Event log page layout • Changing the p250’s IP address • Alternate Ethernet connection Important Note: The p250 web interface is not compatible with the Google Chrome browser. Connection to a local network is permitted as long as the laser’s fixed IP address is unique to your network, otherwise a peer-to-peer connection is required.
SET YOUR COMPUTER’S STATIC IP ADDRESS PAGE Connect to the p250 laser Remove DC power from the laser. Locate the Ethernet crossover cable in the ship kit. Connect the crossover cable between your computer and the p250’s Ethernet port. Apply 48 VDC power to the laser. Launch your web browser, type “http://192.168.50.50”...
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SET YOUR COMPUTER’S STATIC IP ADDRESS PAGE Important Note: On initial power-up of the laser, allow five seconds for the web interface to load before accessing the web page. Get Data button: Click to begin refreshing web page data once a second. Pause button: Click to halt web page updates.
EVENT LOG PAGE LAYOUT PAGE Configure IP Address link: Click this link to change the laser’s factory-default IP address (192.168.50.50). See the Changing the p250’s IP address section for details. Event log page layout Figure 4-35 p250 event log page. To access the p250’s event log page (Figure above), open your web browser, type “http://192.168.50.50/service.html”...
CHANGING THE P250’S IP ADDRESS PAGE Changing the p250’s IP address Important Note: You must carefully record and store the new IP address for future reference. After the factory-default IP address is changed, it cannot be remotely reset. To change the p250’s factory-default IP address, perform the following steps: From the p250 web page, click the Configure IP Address link.
P250 FIRMWARE UPGRADE PAGE p250 firmware upgrade This section includes the following subsections: • Required materials/equipment • Firmware upgrade procedure Required materials/equipment The following materials and equipment are required to upgrade the firmware in an p250 laser: • Firmware upgrade file (p250_Firmware_Upgrade.zip) from NOVANTA •...
FIRMWARE UPGRADE PROCEDURE PAGE Figure 4-37 Windows Control Panel. Figure 4-38 Programs and Features dialog. In the Windows Features dialog (Figure below), check “TFTP Client” and then click OK.
SET YOUR COMPUTER’S STATIC IP ADDRESS PAGE Figure 4-39 Windows Features dialog. A progress bar window will appear while the TFTP Client feature is being activated. When the window closes, continue with the next section. Restart this computer. Set your computer’s static IP address The exact steps may vary depending on your operating system.
SET YOUR COMPUTER’S STATIC IP ADDRESS PAGE The Default Gateway field can be left blank. Figure 4-41 I nternet Protocol (TCP/IP) Properties dialog. 7. Click to submit the changes. Prepare the upgrade files Double-click the p250_Firmware_Upgrade.zip file and extract the enclosed firmware upgrade folder to the computer’s desktop.
SET YOUR COMPUTER’S STATIC IP ADDRESS PAGE Figure 4-42 Configure IP Address link on p250 home page. • click When the Change IP Address page loads showing the default IP address (following figure), the Submit button . This resets the laser’s IP address to 192.168.50.50. Figure 4-43 p250 Change IP Address page.
INTEGRATING P250 SAFETY FEATURES PAGE 5. Launch your web browser, type: “http://192.168.50.50” (without the quote symbols) and then press Enter. 6. When the p250 home page appears (following figure), check the label on the web browser’s tab. It should read: p250: CONFIG 2 – X.X to indicate the laser is running upgraded firmware. Figure 4-44 p250 web browser display.
KEY-SWITCH FUNCTIONS PAGE P250 DB-15 User I/O connector allows system integrators or end-users to integrate p250 safety features into their control system. P250’s key-switch, shutter, and remote interlock functions serve to enable or disable DC power to p250’s RF drive. Without DC power, the RF driver cannot supply RF energy to the resonator, causing the CO2 gas to remain in a zero-energy state.
REMOTE INTERLOCK FUNCTIONS PAGE Your control system can monitor the laser’s shutter status on the User I/O connector by connecting your system’s input to Pin 14, Shutter Open, and Pin 13, Output Common (see Output Signal section and Figures above). The Shutter Open output closes when a Shutter Open Request signal is present (SHT LED illuminated blue), and the Laser Ready output is closed (RDY LED is On).
MAINTENANCE & TROUBLESHOOTING PAGE Maintenance & Troubleshooting This section contains maintenance and troubleshooting information for your p250 laser. • Maintenance – describes typical p250 maintenance procedures. • Troubleshooting – explains how to troubleshoot common p250 problems Important Note: This section of the Operation Manual explains how to conduct regular main- tenance and/or basic troubleshooting to p250 lasers.
DAILY INSPECTIONS PAGE Daily inspections Perform the following steps daily to keep your p250 laser in optimum operating condition. Except for the procedures described below, no other service is required or should be attempted. Caution: Possible Equipment Damage If you operate the laser in dirty or dusty environments, contact NOVANTA about the risks of doing so and precautions you can take to increase the longevity for the laser system and associated optical components.
CLEANING GUIDELINES PAGE Caution: Possible Equipment Damage Even small amounts of contamination on optics in the beam path can absorb enough energy to damage the optic. Inspect beam delivery optics periodically for signs of contaminants and carefully clean as required. In dirty environments, purge laser optics using filtered air or nitrogen to prevent vapor and debris from accumulating on optical surfaces.
REQUIRED CLEANING MATERIALS PAGE Required cleaning materials The table below lists the type and grade of materials required to properly clean optical surfaces. Table 5-1 Required cleaning materials. Cleaning optics Shut off and lock out all power to the laser. You must verify that the laser is OFF (in a zero- energy state) before continuing with the optical inspection! 2.
Caution: Possible Equipment Damage Attempting repair of a NOVANTA P250 laser without the express authorization of NOVANTA, will void the product warranty. If troubleshooting or service assistance is required, please contact NOVANTA Customer Service.
TROUBLESHOOTING STATUS LED’S PAGE Troubleshooting Status LED’s p250 LED indicators, also mirrored as output signals on the User I/O connector, provide status information to the user. The prior table shows p250 input/output signal and LED indicator states during normal and fault conditions. User I/O outputs are Closed when the state indicated by the signal name is logically True.
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TROUBLESHOOTING STATUS LED’S PAGE details. If your system does not provide a Shutter Open Request signal, wire a male DB-15 connector to the User I/O connector so that Pin 15 (Input Common) is jumpered to Pin 12 (Auxiliary DC Power Ground) and Pin 14 (Shutter Open Request) is jumpered to Pin 4 (+5 VDC Auxiliary Power).
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TROUBLESHOOTING STATUS LED’S PAGE If water temperature is OK, check the flow rate. If a flow meter is not available, disconnect the cooling tubing from the chiller inlet (or the drain) and run the cooling water for 30 seconds into a five-gallon bucket.
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TROUBLESHOOTING STATUS LED’S PAGE DC Pre-Charge fault A DC Pre-Charge fault indicates that 48 VDC is not available at the input of one or more of the RF modules. The RDY LED will flash in a 5-blink pattern. When this occurs, the Laser Ready output Opens. If a DC Pre-Charge fault appears, the laser requires service—please contact NOVANTA Customer Service or a NOVANTA Authorized Distributor.
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TROUBLESHOOTING STATUS LED’S PAGE Frequency Limit fault Possible Causes: • The 100 kHz PWM frequency limit has been exceeded. Lasing is disabled when the input frequency limit is exceeded. When the input drops below 100 kHz, the laser will begin lasing immediately at the commanded PWM parameters without cycling DC Power. Duty Cycle/Pulse Width Limit fault Possible Causes: •...
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TROUBLESHOOTING STATUS LED’S PAGE Caution: Possible Equipment Damage Even small amounts of contamination on optics in the beam path can absorb enough energy to damage the optic. Inspect beam delivery optics periodically for signs of contaminants and carefully clean as required. In dirty environments, purge laser optics using filtered air or nitrogen to prevent vapor and debris from accumulating on optical surfaces.
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