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	Question	Posted Date
	What are some possible remedies if the #ININT (Input Interrupt) special label does not work? Posted Date: 06/24/2013 Answer: The #ININT special label routine requires the "II" Input Interrupt command somewhere at the top of the program, in the initialization section to execute properly. The #ININT label will not execute unless it has been configured. An active low interrupt requires a setting such as II2. An active high input on input 4, for example, requires the command II,,,4 (Check the "II" command page in the manual for more details.) Attached is a template program. It documents all the special labels and discusses the 3 methods that can be used to resume after an interrupt. You must use the RI command, which restores the interrupt configuration (II) and returns to the program location where the interrupt first occurred. OTHERWISE, use ZS to clear the stack, re-issue the II command just as it was in the initialization section, and use the JP command to have the program. Usually this is the main program loop. It is very important to use either the RI command or re-issue the II command, because the interrupt will not execute again until either of those commands have been executed. Attachments: 7KB Product Group/Line: Controllers, SMC-2000, SMC-3010 LEGEND-MC, YTerm Software Topic/Sub Topic: Ask a Technical Question, Application Example, Programming Document Number: MNEN-5CJMPE Published Date: 06/24/2013 Share \| Rate Rate this article :	06/24/2013
	What are some possible causes for and FGN instruction error ? Posted Date: 02/18/2009 Answer: The FGN is a very simple instruction, and there are only four error possibilities: 1) The number of data pairs must match the number defined in the top of the parameter table. 2) Discontinuous X data. X axis data must be increasing. 3) Incorrect data type a) Input is float type but parameter table data is long type. b) Input is long type but parameter table data is float type. c) Input is word (16 bit) but parameter table data is 32 bit type (Long or Float.) d) Input is 32 bit type (Float or Long) but parameter table data is word (16-bit) 4) Incorrect Output Register type. Output must be a writable type. This excludes I, C, and # type. Input and Parameter Table registers can be of any type. Product Group/Line: Controllers, MotionWorks Software, MP2000 Series (MP2300-MP2200) Topic/Sub Topic: Ask a Technical Question, Alarm Document Number: MTN-6XP3TN Published Date: 02/18/2009 Share \| Rate Rate this article :	02/18/2009
	What are some of the potential causes of the A.E72 alarm? Posted Date: 02/06/2009 Answer: A.E72 alarm is the option card detection/initialization fault. It occurs when power is applied to the SGDV amplifier the first time after the removal of an option card. This alarm may occur if the option card is removed accidentally, or the amplfier was not reset after the option card is removed. To reset the A.E72 alarm, execute function Fn014 by using the digital operator or SigmaWin+. Be sure to cycle the power to the SGDV to complete the alarm reset procedure. Product Group/Line: Servo Products, SGDV EtherCAT, SGDV SigmaLogic, SGDV MP2600iec Topic/Sub Topic: Ask a Technical Question, Alarm, Troubleshooting Document Number: MTN-7FNRKP Published Date: 02/06/2009 Share \| Rate Rate this article :	02/06/2009
	What are some of the potential causes of an A.80 Alarm? Posted Date: 04/12/2006 Answer: An A.80 (A80) alarm is most often caused by external noise injection into the position feedback system (encoder or encoder cable). For a Sigma I system, this alarm occurs when there is more than 2 counts drift between the actual and expected pulse count at the positive rise of the U-Phase Hall Feedback (amplifier expects count to increase by encoder resolution per motor commutation cycle). For a Sigma II system, this alarm occurs when there is more than 2 counts drift between the actual and expected pulse count at the positive rise of the C-Phase Pulse Feedback (amplifier expects count to increase by encoder resolution per motor revolution). If the alarm is generated at power supply on, either the encoder is wired incorrectly or the servo amplifier should be replaced. If the alarm is generated at run time, noise is most likely the cause, and the following should be checked: 1) If encoder cable distance is long, check to insure that the proper wire gauge is used according to manual spec. 2) Verify the encoder cable construction according to manual spec. 3) Check to insure the encoder cable is not pinched. 4) Check to verify that the Amplifier is properly grounded to the panel field ground according to the manual spec (mounted to metal panel, and proper field ground wire used). 5) Noise entry into the system can also be reduced by using a Ferrite Core on the encoder cable - ZCAT1325-0530A, EMI/RFI clamp filter by TDK, try one or more loops of encoder wire. 6) Check that the system is not subject to excessive vibration impact *Most common fixes Product Group/Line: Servo Products, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Alarm, Troubleshooting, Wiring Document Number: MNEN-5CJMKG Published Date: 04/12/2006 Share \| Rate Rate this article :	04/12/2006
	What are some methods for physical connections (wiring) to the MP920 218IF Ethernet Module? Posted Date: 07/13/2004 Answer: The MP920 218IF module comes with a standard AUI (Attachment Unit Interface) D-sub (DB-15) socket connector with slide latch. This AUI is provided to allow the user to select the physical connection type. To interface this with standard type physical connections such as 10Base-T (RJ-45) or 10Base-5 (Co-axial), a Transceiver Module will be required. See the attached .PDF file for complete information including cable diagrams. Attachments: 42KB Product Group/Line: Controllers, MP920 Machine Controller Topic/Sub Topic: Ask a Technical Question, Integration, Network Communications, Wiring Document Number: BFAR-5EPPAB Published Date: 07/13/2004 Share \| Rate Rate this article :	07/13/2004
	What are some issues that would cause a web application to drift when using camming with registration, and what are some remedies to this condition? Posted Date: 07/13/2004 Answer: The slave (SGDH motor) on a web handling or similar system may drift for the following reasons: 1) Slave has a non-integer based machine cycle. 2) Master has a non-integer based machine cycle. 3) Cam calculations are flawed. Please see the attached Word file for detailed information about these conditions. Attachments: 16KB 105KB Product Group/Line: Controllers, MotionWorks Plus Software, MP940 Machine Controller Topic/Sub Topic: Ask a Technical Question, Application Example, Programming, Software, Troubleshooting Document Number: KHUL-5DUSAN Published Date: 07/13/2004 Share \| Rate Rate this article :	07/13/2004
	What are some counter-measures to reduce harmonics created by AC drives? Posted Date: 06/08/2007 Answer: With inverters, some counter-measures include installing a reactor on the input side (there are both AC and DC type reactors), or the addition of a sinusoidal power supply regen converter. Product Group/Line: Inverter Drives, G5HHP Drive, G7 Drive, P7 Drive, V74X Drive, V7N Drive Topic/Sub Topic: Ask a Technical Question, Harmonics Document Number: DRV-5NVJSV Published Date: 06/08/2007 Share \| Rate Rate this article :	06/08/2007
	What are some concerns when the motor cable is over 100 meters? Posted Date: 06/20/2013 Answer: Motor torque will be reduced from a drop in voltage over the cable length. When using lengthy wires with the inverter and the motor, use wires that are thick enough to assist in reducing cable loss. Drive V/f characteristics may need adjusting to compensate for cable losses . The carrier frequency should typically be reduced as follows based on the cable length. up to 50 meters: under 10kHz. Up to 100 meters, under 5 kHz. To tune a custom V/f pattern. see the attached. For additional information, refer to TM4515, TM.E7.01, TM.E7.02, and TM.F7.01 Attachments: 31KB Product Group/Line: Inverter Drives, E7 Drive, F7 Drive, G5HHP Drive, G5 GPD515 Drive, G5 Drive 600 Volt Topic/Sub Topic: Ask a Technical Question, Installation, Lead Length, Tuning, Wiring Document Number: DRV-5NTJ6D Published Date: 06/20/2013 Share \| Rate Rate this article :	06/20/2013
	What are potential implications of using an Electro-Mechanical Relay or Switching Power Supply in conjunction with a Sigma II Servo System to enable the motor? Can A.C9 and A.E2 alarms be symptoms? Posted Date: 07/13/2004 Answer: Sigma II Servo Systems (SGDH amplifier) require a 24VDC input to enable the motor. It has been observed that in many cases, an Electro- Mechanical Relay or Contactor is utilized as a Master Control Relay to feed this 24VDC signal to the amplifier and perhaps turn on other devices in the control panel at the same time. In some cases, an A.C9 (Encoder Communications) alarm occurs as soon as the relay is engaged. Assuming the wiring for the encoder and grounding of the amplifier have been done properly, the cause is noise generated from the Electro-Mechanical Relay. Here are some remedies: 1) When using a DC relay, install a "fly wheel diode" across the relay coil. When using an AC relay (or contactor,) use a surge suppression device. This will reduce the potential for chattering, which in turn damps the noise. 2) Mount the relay as far as possible from the Servo Amplifier in the panel. 3) Route encoder cables away from the relay. 4) Install a ferrite core (Yaskawa #ESD-SR25) at the SGDH end of the encoder cable in the panel. 5) Consider using a Solid State switching device instead of an Electro-Mechanical one. If an MP940 is used in conjunction with Sigma II amplifier, an A.E2 alarm may occur. Assuming the cause is not MP940 processor time-out or MP940-SGDH synchronization error, the cause can be noise generated from the Electro-Mechanical relays. The same remedies mentioned above should prove helpful. Switching Power Supplies are also noise-generating devices that could potentially cause an A.C9 (Encoder Communications) alarm. Here are some remedies: 1) Mount the power supply as far as possible from servo amplifier. 2) Route encoder cables away from the power supply. 3) Install a ferrite core (Yaskawa #ESD-SR25) at the SGDH side of the encoder cable. 4) Consider using a linear power supply instead of a switching model. Keywords: Error, AC9, AE2 Product Group/Line: Servo Products, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Alarm, Start Up - Installation, Troubleshooting Document Number: REKR-5E6MAE Published Date: 07/13/2004 Share \| Rate Rate this article :	07/13/2004
	What are cable leads +BA and -BA used for on cable SMCCBL0XX when using the SMC-4000? Posted Date: 04/10/2006 Answer: These leads are connected to pins 18 and 20 of the SMC-4000 axis connector which are both labeled as no connection in the SMC-4000 User's Manual. Cable SMCCBL0XX is also used for the SMC-2000, which had a battery connection on pins 18 and 20. However, when being used with an SMC-4000, leads +BA and -BA should not be connected. Typically, the SMC-2000 has been used with Sigma I amplifiers that have no battery provision of their own, so the SMC-2000 included a battery holder and connections to supply the absolute encoder with power. The SMC-4000 is typically used with Sigma II amplifiers, which do include a provision for an absolute encoder battery, so there is no need to supply battery power from the controller. Product Group/Line: Controllers, SMC-4000 Topic/Sub Topic: Ask a Technical Question, Wiring Document Number: MTN-6L5RBH Published Date: 04/10/2006 Share \| Rate Rate this article :	04/10/2006
	What applications is the Single Phase Converter appropriate for? Posted Date: 02/08/2018 Answer: The Single Phase Converter was designed with variable torque applications like fans and pumps in mind. However, it can also be used in constant torque applications that require little overload demands during acceleration and deceleration. Product Group/Line: Single Phase Converter, Inverter Drives Topic/Sub Topic: Ask a Technical Question, Applications Document Number: INV-T4QN83 Published Date: 02/08/2018 Share \| Rate Rate this article :	02/08/2018
	What Add-On Instructions are available with SigmaLogic? Posted Date: 10/29/2014 Answer: MAB_Yaskawa - Motion Axis Blend MAFR_Yaskawa - Motion Axis Fault Reset MAG_Yaskawa - Motion Axis Gear MAH_Yaskawa - Motion Axis Home MHSI_Yaskawa - Motion Axis High Speed Index MAHSP_Yaskawa - Motion Axis Home Set Position MAJ_Yaskawa - Motion Axis Jog MAM_Yaskawa - Motion Axis Move MAS_Yaskawa - Motion Axis Stop MCFG_Yaskawa - Motion Axis Configuration and Status MCLK_Yaskawa - Motion Axis Set Clock MPLS_Yaskawa Motion Programmable Limit Switch MSF_Yaskawa - Motion Axis Servo OFF MSO_Yaskawa - Motion Axis Servo ON MSQE_Yaskawa - Motion Sequence Edit MSQR_Yaskawa - Motion Sequence Run MTRQ_Yaskawa - Motion Axis Torque Control Product Group/Line: SGDV SigmaLogic, Servo Products Topic/Sub Topic: Programming, Ask a Technical Question Document Number: SRV-3UYEFK Published Date: 10/29/2014 Share \| Rate Rate this article :	10/29/2014
	What additional FP605 ratings are planned for the future, and what is the schedule? Posted Date: 03/30/2022 Answer: 480 V, 700 to 1000 HP is planned. Schedule has not yet been determined. 480 V, 12-Pulse is planned. Schedule has not yet been determined. 240/480 V IP55 backside (Flange) drives are planned. Schedule has not been determined. 600 V up to at least 500 HP is planned. Schedule has not yet been determined. Product Group/Line: Inverter Drives, FP605 Topic/Sub Topic: Ask a Technical Question, Product Launch Document Number: INV-OJS7RD Published Date: 03/30/2022 Share \| Rate Rate this article :	03/30/2022
	What about UL Type enclosed packages? Posted Date: 05/14/2020 Answer: At product release, UL Type 1, UL Type 12, and UL Type 3R enclosure packages will be available in 208 V, 240 V, and 480 V models with a limited range of options with new, smaller dimensions. Product Group/Line: Inverter Drives, HV600 Enclosed Bypass, HV600 Enclosed Configured, HV600 Drive Topic/Sub Topic: Ask a Technical Question, Product Launch Document Number: INV-C041H6 Published Date: 05/14/2020 Share \| Rate Rate this article :	05/14/2020
	What A1000 enclosure types are available? Posted Date: 01/03/2011 Answer: NEMA 1 is the standard offering up to 200-240V 75HP ND, 380-480V 150HP ND, and 500-600V 100HP ND; IP00 protected chassis versions are available above those ratings. The standard product can be mounted conventionally, or with its heatsink external (with addition of NEMA 1 external heatsink kit for small drives); however, for installations requiring both NEMA 12 and heatsink external, the A1000 is offered in a special 'Flange' model that provides NEMA 12 integrity on its backside. Product Group/Line: Inverter Drives, A1000 Drive Topic/Sub Topic: Ask a Technical Question, Enclosure Document Number: DRV-8CDJW7 Published Date: 01/03/2011 Share \| Rate Rate this article :	01/03/2011
	We have two raycap options (7 & 9). When would I use option 7 verses option 9? Posted Date: 05/13/2021 Answer: Raycap option 9 is specifically intended for 480 VAC WYE secondary transformer power. When not using this type of power supply use raycap option 7. Product Group/Line: Inverter Drives, U1000 Industrial Configured Topic/Sub Topic: Ask a Technical Question, Power Quality, Product Launch Document Number: INV-4218SG Published Date: 05/13/2021 Share \| Rate Rate this article :	05/13/2021
	UV -- Fault Code Description Posted Date: 06/08/2007 Answer: Digital Operator Display Text: Uv (blinking) Description: UV (Main circuit low voltage) Main circuit DC voltage drops below the low-voltage detection level while the drive output is OFF. 230V: Stops at main circuit DC voltage below appox. 200V (160 for singelphase) 460V: Stops at main circuit DC voltage below approx. 400V. Causes and Corrective Actions: Check the following: * Power supply voltage * Main circuit power supply wiring is connected. * Terminal screws are securely tightened. A complete list of fault codes is available in the instruction manual. Find the TM.V7.01 manual on the Yaskawa website. Product Group/Line: Inverter Drives, V7 Drive Topic/Sub Topic: Ask a Technical Question, Fault Code Description Document Number: DRV-5P3H6A Published Date: 06/08/2007 Share \| Rate Rate this article :	06/08/2007
	UV -- Fault Code Description Posted Date: 06/08/2007 Answer: Digital Operator Display Text: UV DC Bus Undervolt Description: The main circuit or control circuit voltage has fallen below the under voltage trip point momentarily. A minor fault contact output can be programmed by using the multi-function outputs. (GPD515/G5 only) Possible Cause(s): Single phase condition on the input, low input voltage at L1, L2, and L3. Corrective Action: Check the three phase input voltage, verify setting of L2-05 for GPD515/G5. 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, P5 GPD506 Drive, P5 Drive 600 Volt, G5 Drive 600 Volt Topic/Sub Topic: Ask a Technical Question, Fault Code Description Document Number: DRV-5P2L6Y 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
	UV3 - Fault Code Description Posted Date: 06/20/2013 Answer: Digital Operator Display Text: UV3 MC Answerback Description: The pre-charge contactor opened while the inverter is running. This fault only applies to 230 V units 18kW ~ 75kW, 460 V units 22kW ~ 160kW and 600 V units 30kW ~ 160kW Possible Cause(s): Contacts on contactor are dirty, contactor does not function mechanically Corrective Action: Check the contactor, check the ribbon cable from the control board to the gate drive board. 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-5NZR3T Published Date: 06/20/2013 Share \| Rate Rate this article :	06/20/2013

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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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