E7B Drive Bypass

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	Question	Posted Date
	When replacing the motor for the application and the heat sink cooling fans. How do I reset Cumulative Motor Operation Time U1-13 and Heat Sink Cooling Fan Operation Time U1-40? Posted Date: 09/16/2013 Answer: When a motor replacement is needed, Cumulative Motor Operation Time (U1-13) can be reset with setting parameter o2-07=000000. When replacing the heat sink cooling fans on the drives, Heat Sink Cooling Fan Operation Time (U1-40) can be reset with setting parameter o2-10=00000. Product Group/Line: Inverter Drives, E7 Drive, E7B Drive Bypass, E7BR Package, E7C Drive Configured, E7CR Package, E7E Drive Engineered, E7L Drive Bypass, E7N Narrow Bypass Package, E7S Slim Configured Drive, F7 Drive, G7 Drive, iQpump 7 Series, iQpump VTC, L7B Drive, P7 Drive, P7B Drive Bypass, P7BR Package, P7C Drive Configured, P7CR Package, P7S Slim Configured Package Topic/Sub Topic: Ask a Technical Question, Maintenance, Motors, Parameters, Repair, Service Document Number: DRV-9BHLXJ Published Date: 09/16/2013 Share \| Rate Rate this article :	09/16/2013
	What settings are needed to configure the E7 Bypass for serial communication control in AUTO mode and keypad speed control in HAND mode? Posted Date: 06/11/2014 Answer: See attached. Attachments: 44KB Product Group/Line: Inverter Drives, E7B Drive Bypass Topic/Sub Topic: Ask a Technical Question, Installation, Keypad-Operator, Operation, Programming, Start Up, Starting - Stopping Document Number: DRV-5GRV35 Published Date: 06/11/2014 Share \| Rate Rate this article :	06/11/2014
	What is the purpose of the TEST switch on the front panel of an E7B bypass unit? Posted Date: 06/08/2007 Answer: The TEST switch is only available when in the Bypass Mode. It is used to energize the input contactor to the Drive while the unit is operating in Bypass. When in TEST mode the drive can be programmed, or other "tests" performed while the motor runs on the power line at full speed in Bypass Mode. TEST MODE engages the input contactor and three phase AC power is applied to the drive. The output contactor, however, will not be energized, this isolates the motor from the drive's output voltage. When placed in the Drive Mode, switching from NORMAL to TEST position will remove the Drive run command and the motor will stop. Please refer to the "Selector Switch Functions" section found on page 4-9 in the E7B Drive / Bypass Technical Manual (TM.E7B.01). Product Group/Line: Inverter Drives, E7B Drive Bypass Topic/Sub Topic: Ask a Technical Question, Bypass Function, Operation Document Number: DRV-5WCPM4 Published Date: 06/08/2007 Share \| Rate Rate this article :	06/08/2007
	UV3 -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text: UV3 MC Answerback Description: Soft Charge Circuit Fault. The pre-charge contactor opened while the Drive was running. Causes: Contacts on the soft charge contactor are dirty and the soft charge contactor does not function mechanically. Corrective Actions: Cycle power off and on to the Drive - - - Check the condition of the soft charge contactor - - - Repair or replace the Power PCB/Gate Drive PCB. 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-5P4QFF Published Date: 11/16/2009 Share \| Rate Rate this article :	11/16/2009
	UV2 -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text:UV2 CTL PS Undervolt Description: Control Power Supply Undervoltage. Undervoltage of the control circuit when running. Causes: External load connected pulling down the Drive power supplies Corrective Actions: Cycle power off and on to the Drive - - - Repair or replace the Power PCB/Gate Drive PCB - - - Remove all control wiring and test Drive. 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-5P4QCZ Published Date: 11/16/2009 Share \| Rate Rate this article :	11/16/2009
	UV1 -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text:UV1 DC Bus Undervolt Description:DC Bus Undervoltage: The DC bus voltage is less than or equal to L2-05 208-240Vac: Trip point is less than or equal to 190Vdc 480Vac: Trip point is less than or equal to 380Vdc. Causes:Low input voltage at R/L1, S/L2 and T/L3 - - - The acceleration time is set too short - - - Voltage fluctuation of the input power is too large Corrective Actions:Check the input circuit and increase the input power to within specifications - - - Extend the time in C1-01 - - - Check the input 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-5P4Q7X Published Date: 11/16/2009 Share \| Rate Rate this article :	11/16/2009
	UL3 -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text:UL3 Undertorq Det 1 Description:Undertorque Detection 1 Drive output current < L6-02 for more than the time set in L6-03. Causes:Motor is underloaded Corrective Actions:Ensure the values in L6-02 and L6-03 are appropriate - - - Check application/machine status to eliminate fault. 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-5P4Q5A Published Date: 11/16/2009 Share \| Rate Rate this article :	11/16/2009
	The E7 drive inside the bypass enclosure unit doesn't have the Hand, Off or Auto buttons that are shown in the E7 manual. How can the drive be run locally? Posted Date: 07/13/2004 Answer: To limit confusion, the Hand, Auto and Off buttons on the keypad were disabled and a membrane/sticker was placed over the buttons on the face of the keypad. This is done only on units that have a seperate H-O-A switch on the door of the enclosure.These functions can only be accessed manually, by adjusting the Hand/Off/Auto switch located on the front panel of the bypass unit. They are peripheral methods for changing operation methods. The purpose for this is to limit confusion by having only one Hand/Off/Auto control. Product Group/Line: Inverter Drives, E7B Drive Bypass Topic/Sub Topic: Ask a Technical Question, Bypass Function, Keypad-Operator, Programming, Start Up Document Number: DRV-5GRV4D Published Date: 07/13/2004 Share \| Rate Rate this article :	07/13/2004
	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
	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
	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
	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
	PF -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text: PF Input Pha Loss Description: Input Phase Loss Drive input power supply has an open phase or has a large imbalance of input voltage. Causes: Open phase on the input of the Drive - - - Loose terminal screws at R/L1, S/L2 or T/L3. - - - Momentary power loss occurred - - - Input voltage fluctuation too large - - - Parameter L8-06 value is set incorrectly. Corrective Actions:Check the input voltage - - - Tighten the terminal screws - - - Check the input voltage - - - Check the input voltage - - - Adjust L8-06 according to your application. The higher the value the less sensitive it becomes. 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-5P4PN6 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
	OV -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text:OV DC Bus Overvolt Description:DC Bus Overvoltage 208-240Vac: Trip point is greater than or equal to 400Vdc 480Vac: Trip point is greater than or equal to 800Vdc. Causes:High input voltage at R/L1, S/L2 and T/L3 - - - The deceleration time is set too short - - - Power factor correction capacitors are being used on the input to the Drive. Corrective Actions:Check the input circuit and reduce the input power to within specifications Extend the time in C1-02 Remove the power factor correction capacitors. 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-5P4PKD 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
	OPR - Fault Code Description Posted Date: 02/17/2016 Answer: Digital Operator Display Text: OPR Oper Disconnect Description: Digital Operator Connection Fault The Drive will stop if the digital operator is removed when the Drive is commanded to run through the digital operator Possible causes: The digital operator is not attached The digital operator connector is broken The "HAND" key is enabled when it shouldn't be Corrective Actions: Attach the digital operator Check the digital operator connector Verify the setting of o2-06. 0: Disabled - The drive will not fault when the digital operator is removed. 1: Enabled - The drive will fault (OPR) and coast to stop when the operator is removed. If using software 3020 above, o2-15 should be set to "0" to disable "HAND" key on the digital operator. If using RUN Wizard in DriveWizard Industrial, o2-15 should be set to "0" to disable "HAND" key on the digital operator. 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-5P4PG2 Published Date: 02/17/2016 Related Files: User Manual for P7 Drive E7 Drive User Manual User Manual for F7 Drive Share \| Rate Rate this article :	02/17/2016
	OL3 -- Fault Code Description Posted Date: 06/21/2010 Answer: Digital Operator Display Text:OL3 Overtorque Det 1 Description:Overtorque Detection 1 Drive output current > L6-02 for more than the time set in L6-03. Causes:Motor is overloaded Corrective Actions:Ensure the values in L6-02 and L6-03 are appropriate - - - Check application/machine status to eliminate fault. 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-5P4P8X Published Date: 06/21/2010 Related Files: User Manual for P7 Drive E7 Drive User Manual User Manual for F7 Drive Share \| Rate Rate this article :	06/21/2010
	OH4 -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text: OH4 Motor Overheat 2 Description:Motor Overheating Fault. The Drive stops operation according to the setting of L1-04. Causes: Overheating of motor as measured by motor thermistor. Corrective Actions: Recheck the cycle time and the size of the load - - - Recheck the accel/decel time (C1-01 and C1-02) - - - Recheck the V/F pattern (E1-01thru E1-13) - - - Recheck the motor rated current value (E2-01). 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-5P4LBT 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
	OH3 -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text: OH3 Motor Overheat 1 Description: Motor Overheating Alarm The Drive stops or continues operation according to the setting of L1-03. Causes:Overheating of motor as measured by motor thermistor Corrective Actions: Recheck the cycle time and the size of the load - - - Recheck the accel/decel time (C1-01 and C1-02) - - - Recheck the V/F pattern (E1-01 thru E1-13) - - - Recheck the motor rated current value (E2-01). 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-5P4L68 Published Date: 11/16/2009 Related Files: User Manual for P7 Drive Technical Manual for V7 and V74X Drives User Manual for F7 Drive Share \| Rate Rate this article :	11/16/2009
	How do I save and recall parameter settings for User Initialization? Posted Date: 02/28/2013 Answer: Save parameters Set O2-03 equal to 1 Recall parameters Set A1-03 = 1110 Product Group/Line: Inverter Drives, A1000 Configured, A1000 Drive, E7 Drive, E7B Drive Bypass, E7BR Package, E7C Drive Configured, E7CR Package, E7L Drive Bypass, E7N Narrow Bypass Package, E7S Slim Configured Drive, F7 Drive, iQpump 7 Series, iQpump1000, J1000 Drive, P1000 Drive, P7 Drive, P7B Drive Bypass, V1000-4X Drive, V1000 Drive, Z1000 Bypass, Z1000 Drive, iQpump Micro, iQpump Micro Configured Topic/Sub Topic: Ask a Technical Question, Installation, Instructions, Keypad-Operator, Maintenance, Operation, Options, Parameters, Programming, Protective Features, Service, Start Up, Troubleshooting Document Number: DRV-94UQRE Published Date: 02/28/2013 Share \| Rate Rate this article :	02/28/2013
	GF -- Fault Code Description Posted Date: 11/16/2009 Answer: Digital Operator Display Text: GF Ground Fault Description:Output Ground Fault Drive output grounding current has exceeded 50% of the Drive rated output current. Causes:Motor lead is shorted to ground, DCCT defective Corrective Actions:Remove the motor and run the Drive without the motor - - - Check the motor for a phase to ground short. - - - Check the output current with a clamp on meter to verify the DCCT reading. 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-5P4KUB Published Date: 11/16/2009 Share \| Rate Rate this article :	11/16/2009

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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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E7B Drive Bypass

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E7B Drive Bypass

1/2 - 500 HP

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E7B Drive Bypass

1/2 - 500 HP

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