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	Question	Posted Date
	The E7B bypass unit with the serial communications, option J or option L control comes set up for the start/stop as well as the speed reference to be controlled through serial communication. Is it possible to maintain start/stop control through serial communication while using an analog signal for speed reference? Posted Date: 06/11/2014 Answer: See attached. Attachments: 18KB Product Group/Line: Inverter Drives, E7B Drive Bypass Topic/Sub Topic: Ask a Technical Question, Bypass Function, Networks, Programming Document Number: DRV-5GZPRR Published Date: 06/11/2014 Share \| Rate Rate this article :	06/11/2014
	The Drive Wizard .PARMS file was edited with another program (ie. Microsoft Word, Notepad) and saved. When reopened with DriveWizard, an error code of "File Error" was displayed on-screen. What is the problem and how can this be corrected? Posted Date: 09/13/2012 Answer: See attached. For additional information, refer to TM.DW.04 the DriveWizard Manual. Attachments: 157KB Product Group/Line: Inverter Drives, DriveWizard Software, DriveWizard Software 6.0 Topic/Sub Topic: Ask a Technical Question, Drive Wizard, Software, Troubleshooting Document Number: DRV-5W4JY4 Published Date: 09/13/2012 Share \| Rate Rate this article :	09/13/2012
	The Alarm output on the CACR HR Servopack no longer works. It is always open (or closed) regardless if the servopack is in an alarm state or not. What causes this situation? Posted Date: 03/12/2002 Answer: Assuming the Servopack 's Alarm output is wired correctly, the most common problem is that the relay's coil resistance is too low and the output has "burned out." The output photo-transistor used on the HR- Servopack (as well as most all of Yaskawa's servo products) is designed to handle a maximum of 50mA through it. The maximum voltage level allowed across the photo-transistor when OFF is 30VDC. Therefore, the safest selection is a relay coil with at least 600-ohms. If the power supply is a regulated 24VDC, then 480-ohms is acceptable. The second most common problem is connecting a relay with a "fly wheel diode" incorrectly and shorting the power supply accross the output. Remember that the Alarm outptus are ON (conducting) when NO ALARM is present. Therefore, if the relay's coil resistance is too low, it will damage the output. Attachments: 606KB Product Group/Line: Servo Products, CACR-HR Topic/Sub Topic: Ask a Technical Question, Troubleshooting, Wiring Document Number: MNEN-5CJML8 Published Date: 03/12/2002 Share \| Rate Rate this article :	03/12/2002
	The AC drive repeatedly displays an OV (Overvoltage) fault when the inverter is stopping. What causes this? Posted Date: 06/11/2014 Answer: See attached. Attachments: 28KB Product Group/Line: Inverter Drives, General Inverter Drives Topic/Sub Topic: Ask a Technical Question, Dynamic Braking, Protective Features, Starting - Stopping, Troubleshooting Document Number: DRV-5GSUAZ Published Date: 06/11/2014 Share \| Rate Rate this article :	06/11/2014
	The "sleep" function can only be used when PID is enabled. If an analog (0-10VDC or 4-20mA) signal for speed reference is used, is there any way to use "sleep" without enabling PID? Posted Date: 11/29/2005 Answer: Yes. The minimum frequency must be kept at 1.5 Hz, and the "Prohibit Frequency" parameters will need to be used. Set parameter n062 equal to the midway point between 1.0Hz and the desired sleep frequency. Set parameter n064 equal to the difference between the midway point and 1.0 Hz. Example: A sleep frequency of 20.0 Hz is desired. 20.0 - 1.0 = 19.0 Difference = 19.0/2 = 9.5 Midway point = 1.0 + 9.5 = 10.5 Hz Set n062 = 10.5 Hz Set n064 = 9.50 Hz -- When starting up, the output frequency will remain at 0.0 Hz until the reference signal reaches a minimum of 20.0 Hz. -- With a decreasing frequency reference, the output frequency will level off at 20.0 Hz as the reference descends below 20.0 Hz. When the reference goes below the midpoint (10.5 Hz in the example), the output frequency will then ramp down to 0.0 Hz. For more information, please see TM4506. Product Group/Line: Inverter Drives, P5 GPD506 Drive, P5 Drive 600 Volt Topic/Sub Topic: Ask a Technical Question, Applications, Programming, Speed Control Document Number: DRV-5HLNCZ Published Date: 11/29/2005 Share \| Rate Rate this article :	11/29/2005
	SVE -- Fault Code Description Posted Date: 06/08/2007 Answer: Digital Operator Display Text: SVE Zero Servo Fault Description: In the zero servo mode, the motor shaft has rotated 10,000 non-quadrature PG pulses from the home position. Possible Cause(s): Torque limit or zero servo gain set too low, load torque excessively Corrective Action: Verify the program parameters B9-01 zero servo gain and torque limit settings L7-01 ~ L7-02, check for noise on the PG signals. For information on resetting a fault on G5, E7, F7or G7 Drives, see FAQ# DRV-5P8PGJ. For more information and a complete list of fault codes see the following manuals TM4515 and PP.P5G5.01. Product Group/Line: Inverter Drives, G5 GPD515 Drive, G5 Drive 600 Volt Topic/Sub Topic: Ask a Technical Question, Fault Code Description Document Number: DRV-5P2HRQ Published Date: 06/08/2007 Share \| Rate Rate this article :	06/08/2007
	Specification of 12 pulse input transformer for GPD505/506- PC5/P5 series AC drive. Posted Date: 06/12/2014 Answer: See attached. Attachments: 21KB Product Group/Line: Inverter Drives, P5 GPD506 Drive, P5 Drive 600 Volt Topic/Sub Topic: Ask a Technical Question, Harmonics Document Number: DRV-5JWSZL Published Date: 06/12/2014 Share \| Rate Rate this article :	06/12/2014
	Sometimes my machine power-up position is incorrect even though I have an absolute encoder on the motor. What is causing this issue? Posted Date: 05/19/2015 Answer: The absolute encoder rollover value must be properly calculated and stored in servopack parameter Pn205. This parameter is the Multi-Turn Limit Setting. It is necessary to set this value properly for rotary applications which move infinitely in one direction and utilize an absolute encoder. Example applications include indexing tables, spindles, turrets, winders, and conveyors. Pn205 allows the absolute encoder to synchronize itself with the mechanical load's position. The value must be chosen so that the number of turns tracked by the absolute encoder of the motor is an integer multiple of the desired mechanical cycle of the mechanism. When Pn205 is set incorrectly, the mechanism's home position may not be correct after a power cycle. Please see the attached documents that illustrate how to calculate Pn205 with three example applications. IMPORTANT NOTE: After making a change to Pn205 and cycling the power, the drive will display alarm A.CC0 (Multi-turn Limit Disagreement Error). This alarm is fixed by executing the "Multiturn Reset" function found in the web server (section "Machine Operations", tab "Drive Pn"). After executing this function, cycle power again to clear the alarm. Attachments: 106KB 292KB Product Group/Line: Controllers, Servo Products, MP2000iec Series, MP2300Siec, MP2310iec, MP2600iec, MP3200iec, SGDV MP2600iec, SGDV Analog, SGDV EtherCAT, SGDV Indexer, SGDV MECHATROLINK-II, SGDV MECHATROLINK-III, SGDV SigmaLogic Topic/Sub Topic: Ask a Technical Question, Adjustments, Alarm, Application Example, Applications, Hardware, Instructions, Operation, Parameters, Software, Specifications, Start Up - Installation, Troubleshooting Document Number: MTN-99GLV2 Published Date: 05/19/2015 Share \| Rate Rate this article :	05/19/2015
	Some shape cutting OEMs consider their front-end interface as their differentiating feature over competitors. How would you make Compass attractive to OEMs like this? Posted Date: 02/09/2021 Answer: One key benefit of Compass is the OEM branding. Typically, OEMs who already own their custom front end may find their front end outdated and difficult to support. Yaskawa Compass provides OEMs with a complete and flexible solution while giving them the ability to maintain their own unique branding. Product Group/Line: Yaskawa Compass, Controllers Topic/Sub Topic: Ask a Technical Question Document Number: CNT-8M7R18 Published Date: 02/09/2021 Share \| Rate Rate this article :	02/09/2021
	Should motor cable length be a concern when installing an AC drive?, Is it ok to have a motor 300ft from the drive? Posted Date: 06/12/2014 Answer: See attached. Attachments: 17KB Product Group/Line: Inverter Drives, E7 Drive, E7B Drive Bypass, E7C Drive Configured, E7E Drive Engineered, E7L Drive Bypass, E7N Narrow Bypass Package, E7S Slim Configured Drive, F7 Drive, G5 Drive 600 Volt, G5HHP Drive, G7 Drive, P7 Drive, VS mini Drive Topic/Sub Topic: Ask a Technical Question, Applications, Installation, Motors, Wiring Document Number: DRV-5H8NHJ Published Date: 06/12/2014 Share \| Rate Rate this article :	06/12/2014
	Serial communication is lost intermittently between the building automation system (BAS) and a Lonworks board on the GPD506 / P5 drive. What might be causing this? Posted Date: 06/12/2014 Answer: See the attached for several tips that may help resolve intermittent serial communication loss with Lonworks and the GPD506/P5. For further information, please refer to TM4506. Attachments: 42KB Product Group/Line: Inverter Drives, Network Comms-Lonworks, P5 GPD506 Drive, P5 Drive 600 Volt Topic/Sub Topic: Ask a Technical Question, Troubleshooting Document Number: DRV-5JEVFE Published Date: 06/12/2014 Share \| Rate Rate this article :	06/12/2014
	SER - Fault Code Description Posted Date: 06/08/2007 Answer: Digital Operator Display Text: SER (blinking) Description: SEr (Sequence error) Drive receives LOCAL / REMOTE select command or communication / control circuit terminal changing signals from the multifunction terminal while the drive output is ON. Causes and Corrective Actions: Check the external circuit (sequence). A complete list of fault codes is available in the V7 instruction manual. Find the manual on the Yaskawa website. Product Group/Line: Inverter Drives, V74X Drive, V7N Drive, V7 Drive Topic/Sub Topic: Ask a Technical Question, Fault Code Description Document Number: DRV-5P3JBV Published Date: 06/08/2007 Share \| Rate Rate this article :	06/08/2007
	SC - Fault Code Description Posted Date: 06/08/2007 Answer: Digital Operator Display Text: SC Short Circuit Description: The inverter output is short-circuited. Possible Cause(s): Shorted inverter output phase to phase, shorted motor, locked rotor. Corrective Action: Remove the motor and run the inverter without the motor. Check the motor for a phase to phase short. Check the inverter for a phase to phase short at the output. For information on resetting a fault on G5, E7, F7or G7 Drives, see FAQ# DRV-5P8PGJ. For more information and a complete list of fault codes see the following manuals TM4515, TM4506 and PP.P5G5.01. Product Group/Line: Inverter Drives, G5HHP Drive, G5 GPD515 Drive, P5 GPD506 Drive, P5 Drive 600 Volt, G5 Drive 600 Volt Topic/Sub Topic: Ask a Technical Question, Fault Code Description Document Number: DRV-5NZS4Y Published Date: 06/08/2007 Share \| Rate Rate this article :	06/08/2007
	RR -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text:RR DynBrk Transistr Description:Dynamic Braking Transistor. The dynamic braking transistor failed. Causes: Shorted dynamic braking transistor, high DC bus voltage, defective dynamic braking resistor. Corrective Actions:Cycle power off and on to the Drive - - - Replace defective dynamic braking transistor or resistor - - - Monitor DC bus voltage. For information on resetting a fault, see FAQ# DRV-5P8PGJ. For more information and a complete list of fault codes see the following manuals TM.E7.01, TM.F7.01 and TM.P7.01. Product Group/Line: Inverter Drives, E7 Drive, E7B Drive Bypass, E7C Drive Configured, E7E Drive Engineered, E7L Drive Bypass, E7N Narrow Bypass Package, E7S Slim Configured Drive, F7 Drive, P7 Drive Topic/Sub Topic: Ask a Technical Question, Fault Code Description Document Number: DRV-5P4Q3A Published Date: 11/16/2009 Share \| Rate Rate this article :	11/16/2009
	RR -- Fault Code Description Posted Date: 06/08/2007 Answer: Digital Operator Display Text: RR DynBrk Transistr Description: The braking transistor has failed. 230V Units - 0.4kW ~ 7.5kW 460V Units - 0.4kW ~ 15kW Possible Cause(s): Shorted braking transistor, high DC bus voltage, defective braking Corrective Action: Replace defective transistor or resistor, monitor DC bus level. TFor information on resetting a fault on G5, E7, F7or G7 Drives, see FAQ# DRV-5P8PGJ. For more information and a complete list of fault codes see the following manuals TM4515, TM4506 and PP.P5G5.01. Product Group/Line: Inverter Drives, G5HHP Drive, G5 GPD515 Drive, P5 GPD506 Drive, P5 Drive 600 Volt, G5 Drive 600 Volt Topic/Sub Topic: Ask a Technical Question, Fault Code Description Document Number: DRV-5P2HH8 Published Date: 06/08/2007 Share \| Rate Rate this article :	06/08/2007
	RH -- Fault Code Description Posted Date: 06/08/2007 Answer: Digital Operator Display Text: RH DynBrk Resistor Description: The braking resistor temperature has exceeded the allowable value. (Protects Yaskawa 3% duty cycle resistors only) Can be selected as a minor fault by using the multifunction outputs. Possible Cause(s): Overhauling load, extended braking duty cycle, defective braking Corrective Action: Verify braking duty cycle, monitor DC bus voltage, replace resistor. For information on resetting a fault on G5, E7, F7or G7 Drives, see FAQ# DRV-5P8PGJ. For more information and a complete list of fault codes see the following manuals TM4515, TM4506 and PP.P5G5.01. Product Group/Line: Inverter Drives, G5 GPD515 Drive, P5 GPD506 Drive, P5 Drive 600 Volt, G5 Drive 600 Volt Topic/Sub Topic: Ask a Technical Question, Fault Code Description Document Number: DRV-5P2HL4 Published Date: 06/08/2007 Related Files: Technical Manual for GPD515/G5 Drive Technical Manual for GPD506/P5 Drive Troubleshooting Manual for GPD 506/P5 and GPD 515/G5 - Section One Share \| Rate Rate this article :	06/08/2007
	RH -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text:RH DynBrk Resistor Description:Dynamic Braking Resistor. The protection of the dynamic braking resistor based on setting of L8-01. Causes:Overhauling load, extended dynamic braking duty cycle, defective dynamic braking resistor. Corrective Actions:Verify dynamic braking duty cycle - - - Monitor DC bus voltage - - - Replace dynamic braking resistor. For information on resetting a fault, see FAQ# DRV-5P8PGJ. For more information and a complete list of fault codes see the following manuals TM.E7.01, TM.F7.01 and TM.P7.01. Product Group/Line: Inverter Drives, E7 Drive, E7B Drive Bypass, E7C Drive Configured, E7E Drive Engineered, E7L Drive Bypass, E7N Narrow Bypass Package, E7S Slim Configured Drive, F7 Drive, P7 Drive Topic/Sub Topic: Ask a Technical Question, Fault Code Description Document Number: DRV-5P4PT2 Published Date: 11/16/2009 Related Files: User Manual for P7 Drive E7 Drive User Manual User Manual for F7 Drive Share \| Rate Rate this article :	11/16/2009
	Product Demo Documentation: Sigma FSP Posted Date: 06/26/2013 Answer: This FAQ contains links to the supporting files for the Sigma FSP demo. Search for the document numbers listed below. Click any of the activated links below to open the requested file. Vital Statistics* General: Demo Vital Statistics - Product and Tradeshow (Doc # GG.MCD.07.008) Demo Program Example Code: Sigma FSP - Demo Program (Doc # EC.MCD.06.058) Technical Note: Sigma FSP - How to Demo (Doc # TN.MCD.06.059) Schematics None available at this time. Videos and Graphics None available at this time. *Partner login required Product Group/Line: Servo Products, Sigma FSP Topic/Sub Topic: Ask a Technical Question, Product Demo Document Number: MTN-6VYLZD Published Date: 06/26/2013 Share \| Rate Rate this article :	06/26/2013
	Product Demo Documentation: NS300/NS500 Posted Date: 06/26/2013 Answer: This FAQ contains links to the supporting files for the NS300/500 demo. Search for the document numbers below to locate your file. Vital Statistics* General: Demo Vital Statistics - Product and Tradeshow (Doc # GG.MCD.07.008) Demo Program Example Code: NS300/500 - Master Ladder Example (requires MP940) (Doc # EC.MCD.05.105) Example Code Manual: NS300/500 - Master Ladder (Doc # EM.MCD.05.106) Schematics None available at this time. Videos and Graphics None available at this time. *Partner login required Product Group/Line: Controllers, NS300 DeviceNet, NS500 Profibus Topic/Sub Topic: Ask a Technical Question, Product Demo Document Number: MTN-6VYLYV Published Date: 06/26/2013 Related Files: Example Code Manual: NS300/NS500 - Master Ladder Share \| Rate Rate this article :	06/26/2013
	Product Demo Documentation: MP940 Posted Date: 06/26/2013 Answer: This FAQ contains links to the supporting files for the MP940 demo. Search the document numbers below to locate your files. Vital Statistics* General: Demo Vital Statistics - Product and Tradeshow (Doc # GG.MCD.07.008) Demo Program Example Code: MP940 - MW+ Template Program (Doc # EC.MCD.03.514) Example Code Manual: MP940 - MW+ Template Program (Doc # EM.MCD.03.514) Schematics None available at this time. *Requires partner login Product Group/Line: Controllers, MotionWorks Plus Software, MP940 Machine Controller Topic/Sub Topic: Ask a Technical Question, Product Demo Document Number: MTN-6VYLY9 Published Date: 06/26/2013 Related Files: Example Code Manual: MP940 - MW+ Template Program Share \| Rate Rate this article :	06/26/2013

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SAFETY PRECAUTIONS AND INSTRUCTIONS FOR USE OF FAQ INFORMATION!

Please read and understand the product instruction manual before installing, servicing or operating Yaskawa products. FAQ content and illustrations are provided as technical advice to augment the information in manual, not supersede it. It is not possible to give detailed instructions for all types of installation or support activities. The information described in the FAQs are subject to change without notice to improve the product or FAQ. Yaskawa assumes no responsibility for errors or omissions or damages resulting from the use of the information contained in any FAQ. All warnings, cautions and product instruction for product use must be followed. Installation, operation and maintenance should be carried out by qualified personnel. Failure to observe these and other precautions highlighted in the product manuals will expose the user to high voltages resulting in, serious injury or death. Qualified personnel are defined as individuals who are familiar with the installation, starting, operation and maintenance of Yaskawa products of the type described and have proper qualifications to perform the work.

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