Question about Speed Hitachi Variable Frequency Drive Inverter Vfd

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Bouncing drive I have an inverter that is pulsing foward then reverse bouncing back and fourth on higher setting but works good on lower settings. It will trip the drive on high motor current if you let it bounce to long. What could cause this. or is it the motor.

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Control problem or parameter setting is wrong. What type of control are you using, what application is it for?

Posted on Jun 26, 2009

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Posted on Jan 02, 2017

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How do I get my crosley wall phone to work on tone setting? it will only work on the pulse setting which is very slow.


The DTMF [Dual Tone Multi Frequency] tone dialing system operates on Direct Current [DC] and is DEPENDENT ON the PROPER POLARITY of the two phone conductor wires!!!!

IF the polarity is reversed, ONLY the PULSE DIALING WILL WORK!!!!!

USUALLY the Tip and Ring wires are colored Red and Green [I think -- it's been a lotta years!!!!!].

HOWEVER, color really doesn't matter as USUALLY ONLY TWO WIRES ARE CONNECTED TO THE PHONE SO REGARDLESS OF COLOR, JUST REVERSE those two wires.

Try reversing the two wires, and then switch the phone to tone dial and try it. That MAY solve the problem!

If that doesn't solve the problem then it's beyond me!!!!!

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When u push on the pedal for foward or reverse it seems like it doesn't want to pull like it use to and when u set the deck height it's a lot shorter than what it should be any suggestions It's a john...


you may have to reset the wheels on the mower deck to a higher setting. it sounds like the reason it is having a hard time moving is because it is set to low and is bouging down the mower.

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1 Answer

The settings for welding aluminium using a Tig200P AC/DC inverter


If you are using a remote then you would set the machine in standard for controlling output and also to AC output, HF tig, contactor and control in remote position. I don't know if this helps or not but I pulled it from an owners manual.


1/16" (.062) - pre-flow .1 sec., hot start 20, amperage 70, Hz 100, balance 20%, post-flow 6.0 sec.

For pulse settings - set pulse width 60%, peak current 100, background current 30, Hz 1.0

1/8" (.125) - pre-flow .1 sec., hot start 20, amperage 150, Hz 80, balance 20%, post-flow 6.0 sec.

For pulse settings - set pulse width 60%, peak current 150, background current 50, Hz 1.0

3/16"-1/4" - pre-flow .1 sec., hot start 20, amperage 185, Hz 60, balance 20%, post-flow 8.0 sec.
For pulse settings - set pulse width 60%, peak current 185, Background current 125, Hz 1.0

Mar 14, 2014 | ARC Thermadyne Inverter Stick/TIG Welder...

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Auto transmission clunking noise when putting into reverse & foward or taking out


Check the play in the diff,check for noise when driving check rev,s arn t to high at idle.

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I have an SR185 yamaha, the timing is out, it blows back toward the carby. How do I set the timing?


Hi, Noel_jacobs if you ever see gas weepage from your air cleaner after a putt you may be suffering from fuel reversion or standoff. This is a common end result when changing air cleaners, camshafts, and or exhaust systems or mufflers and not using the proper combination of parts that will not give you maximum performance. Basically, what happens is you have upset the delicate balance of the speed in which the air/fuel mixture enters the combustion chamber. If you change your mufflers the exhaust pulse/charge leaving the exhaust valve hits the baffle and bounces back to the exhaust port putting up a different amount of resistance to the next outgoing pulse/charge depending upon the baffle design. This negative situation can sometimes be remedied by installing reversion/torque cones. If you change your carburetor it may create a virtual wall of fuel, that can be viewed by removing the air cleaner, too be spitting back towards the air cleaner. This negative situation can sometimes be remedied by installing a longer intake manifold. Camshaft induced reversion can only be fixed by using a different cam with the proper amount of duration and or overlap. This phenomenon is more noticeable at higher RPM's and can really rob power and performance from a really great ride. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
HELP carb blowing gas out instead of sucking in to cylinder
blows out of carb
http://service.tanga-moteurs.ro/data/Yamaha%20SR%20125%20%2797%20-%20Service%20Manual.pdf
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-sr-owners-manuals

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I am 220 lbs. B/C rider what is a good clicker


set your rear for full comp dampen, and change to a higher oil in the shocks like a 15 or 20 wt and set to full damp. ride and lower the dampening a click at a time until your landings feel soft and smooth. if you are bouncing after landings raise the rebound dampener also.

Jun 13, 2010 | 2004 Honda CR 250 R

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My truck has no reverse?


Gears are stripped.. On lower gears from riding the clutch.

Sep 24, 2017 | 1998 Ford Expedition

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Sony KV-27V22 scrambled picture and loud buzzing audio


the variation from higher channels from lower channels, few things changes eg frequency, voltage, and current.
take your tv to a w/shop and have the following
tunner voltage pulse variation on a avo meter has you change channels. if the difference of voltage is not unform when you are changing from to channel then you should change the control ic on the rf stage or check the capacitors a round the rf ic for variations in value.

Mar 25, 2009 | Sony KV-27V22 TV

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Bmw e46 steptronic box, up to 1 minute delay in taking up foward drive in the morning from cold. perfect in reverse, fine for the rest of the day.


How old is the gearbox oil? In some cases, older oil (higher viscosity when old) will be too "thick" in colder weather and inhibit the synchro on your gears from slipping into 1st gear. The reason it only happens in 1st, is 'cause the shifting mechanism on the forward change is finer than that of the reverse change.

POSSIBLE Solution: Replace the gearbox oil with a lower viscosity ie. "thinner" oil.

Oct 04, 2008 | BMW 330 Cars & Trucks

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