V74X Drive

FAQs

Didn't find what you were looking for? Try
  Question Posted Date

Why don't the page numbers in the parameter section of the instruction manual match the page numbers in the body of the manual?

06/11/2014

Why are the parameters on the digital operator hidden or locked on the V7 series drives?

11/28/2005

When dealing with harmonic noise, which is better-- an AC or a DC reactor?

06/20/2013

What parameter sets the maximum output frequency for V7 series drives?

06/20/2013

What is the meaning of CAL or CALL on the keypad display?.

10/28/2005

What is required to replace the digital operator on the V7 NEMA 4 drive? What is the replacement part number?

05/07/2015

What happens when switching to reverse while the motor is rotating forward (FWD=OFF, REV=ON)?

11/28/2005

What does it mean when the drive has a RUN command and the STOP light is flashing on the drive display?

10/27/2005

What does it mean that, "motor protection time constant for the electrical termal device is 8 minutes"?

11/28/2005

What does "with volume" and "without volume" refer to? Some V7 manuals and catalogs use this terminology.

06/20/2013

What are some counter-measures to reduce harmonics created by AC drives?

06/08/2007

UV2 -- Fault Code Description

06/08/2007

UL3 -- Fault Code Description

06/08/2007

UL3 (blinking) -- Fault Code Description

06/08/2007

The V7 Drive Jog Reference (S7) command is given. Why doesn't the motor move?

07/13/2004

SER - Fault Code Description

06/08/2007

oPA - Fault Code Description

06/08/2007

On the V7 Drive are the Logic inputs and the Logic Common terminal (SC) electrically isolated from the Frequency Reference Common (FC)?

07/13/2004

OL3 -- Fault Code Description

06/08/2007

OL3 -- Fault Code Description

06/08/2007

OH -- Fault Code Description

06/08/2007

Off -- Fault Code Description

09/19/2013

Is a braking resistor internally installed?

06/20/2013

In troubleshooting LF fault the manual says the output current has exceeded 5% imbalance. How can I calculate this imbalance?

04/01/2014

In some pumping systems the motor speed is normally about 80% of rated motor speed. However, periodic purging of the pumping system requires the pump to go to full speed for a while, then return to normal. How is this done with the V7 Drive?

10/27/2005

How can I set this AC drive so my motor can't run below 20hz? Is it the Frequency min. parameter?

06/12/2014

FAN -- Fault Code Description

06/20/2013

F07 -- Fault Code Description

06/08/2007

F06 -- Fault Code Description

06/08/2007

F05 -- Fault Code Description

06/08/2007

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.