Question about APC Smart-UPS 1000VA UPS System

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ARE UPS WITHOUT ISOLATION TRANSFORMERS POPULAR FOR INDUSTRIAL LOADS LIKE AC MOTORS,DC DRIVES,CNC MACHINE TOOLS ETC.

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Very few UPS have TX isolated outputs these days, way too expensive and heavy, in answer to the question.Buy the right technology for the load, if you try to connect any TX similar in size to the UPS it will shut it down in an instant as the UPS sees the TX startup surge as a short. (same with motors) There are ways of making it work, depending on the application.

Anything with fast high surge starting may shut down the UPS unless the UPS is much bigger than the load.

UPS used to be a real engineering tool, now days they can be bought in supermarkets, its nowhere truer, you get what you pay for.
I have been in the UPS hire and sales business for nearly 30 yrs, we do not buy cheap ones ever.

Hope this helps
thanks for using FixYa





Posted on Aug 02, 2010

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Posted on Jan 02, 2017

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What does error 21 mean?


Precor Error Code 21 Error Code: 21 Manufacturer: Precor
Model: All Models
Error Description: Error 21, Too many Consecutive Power Requests- The error 21 observes a treadmill's power bit reading when the treadmill was operating at speeds above 1 mph. Power bits indicate the relative time that the motor controller drive circuit is turned on. Power bits is an indication of the amount of power the load is demanding from the motor controller. Error 21 indicates that at a speed greater than 1 mph, an excessive amount of power is being demanded from the motor controller. Possible Reason:
  1. A badly worn deck and/or running belt can cause the error to appear when the unit is in use.
  2. Badly worn drive motor brushes may not be making proper contact with the drive motor commutator causing the error to occur when the unit is in use. The unit may also slow down or become sluggish when the load or speed is increased.
  3. A jumper may be required on the lower PCA if installed into a 120 VAC (Version 2) treadmill.
  4. A leaky or shorted drive motor filter capacitor (on units equipped with SCR motor controller) could increase the current demand enough to cause the error.
  5. A leaky or shorted drive motor inductor (on units equipped with SCR motor controller) could increase the current demand enough to cause the error.
  6. The high power demand is caused by a shorted or de-magnetized drive motor.
Recommended Action:
  1. Determine the amount of AC input current being drawn by the unit under no load and loaded conditions using a clamp on AC ammeter. The current displayed can be used to determine the condition of the deck and/or running belt. These same readings should be taken on a like unit, in good operating condition with a know good deck and running belt. The readings from the unit in good operationg condition can be used as the benchmark. Compare readings and replace* the deck and/or running belt if necessary. *Some units have a reversible deck. Be sure if the deck is being flipped or replaced, a new belt is installed on the new deck surface.*
  2. Inspect and repalce both drive motor brushes if necessary.
  3. Inspect the lower PCA (if unit is 120 VAC/ Version 2) for jumper. If jumper is not installed, error typically appears between 7 mph & 8 mph. Install jumper if necessary. CAUTION - DO NOT install jumper if unit is 240 VAC. Installing the jumper on a 240 VAC unit will casue the lower PCA to fail.
  4. Measure the AC input current without a load using a clamp on AC ammeter. Electrically isolate the filter capacitor from the drive motor circuit. The drive motor leads need be kept intact so the drive motor will operate with the filter capacitor removed from the circuit. Re-measure the no load AC input. If the AC input current is significantly lower, replace the filter capacitor.
  5. Measure the AC input current without a load using a clamp on AC ammeter. Electrically isolate the inductor from the drive motor circuit. The drive motor leads need be kept intact so the drive motor will operate with the inductor removed from the circuit. Re-measure the no load AC input. If the AC input current is significantly lower, replace the inductor.
  6. Swap the existing drive motor with a known good drive motor.

Precor Error Code 21

Mar 20, 2015 | Precor Exercise & Fitness

1 Answer

Precor Treadmill C956 error 21


Precor Error Code 21 Error Code: 21 Manufacturer: Precor
Model: All Models
Error Description: Error 21, Too many Consecutive Power Requests- The error 21 observes a treadmill's power bit reading when the treadmill was operating at speeds above 1 mph. Power bits indicate the relative time that the motor controller drive circuit is turned on. Power bits is an indication of the amount of power the load is demanding from the motor controller. Error 21 indicates that at a speed greater than 1 mph, an excessive amount of power is being demanded from the motor controller. Possible Reason:
  1. A badly worn deck and/or running belt can cause the error to appear when the unit is in use.
  2. Badly worn drive motor brushes may not be making proper contact with the drive motor commutator causing the error to occur when the unit is in use. The unit may also slow down or become sluggish when the load or speed is increased.
  3. A jumper may be required on the lower PCA if installed into a 120 VAC (Version 2) treadmill.
  4. A leaky or shorted drive motor filter capacitor (on units equipped with SCR motor controller) could increase the current demand enough to cause the error.
  5. A leaky or shorted drive motor inductor (on units equipped with SCR motor controller) could increase the current demand enough to cause the error.
  6. The high power demand is caused by a shorted or de-magnetized drive motor.
Recommended Action:
  1. Determine the amount of AC input current being drawn by the unit under no load and loaded conditions using a clamp on AC ammeter. The current displayed can be used to determine the condition of the deck and/or running belt. These same readings should be taken on a like unit, in good operating condition with a know good deck and running belt. The readings from the unit in good operationg condition can be used as the benchmark. Compare readings and replace* the deck and/or running belt if necessary. *Some units have a reversible deck. Be sure if the deck is being flipped or replaced, a new belt is installed on the new deck surface.*
  2. Inspect and repalce both drive motor brushes if necessary.
  3. Inspect the lower PCA (if unit is 120 VAC/ Version 2) for jumper. If jumper is not installed, error typically appears between 7 mph & 8 mph. Install jumper if necessary. CAUTION - DO NOT install jumper if unit is 240 VAC. Installing the jumper on a 240 VAC unit will casue the lower PCA to fail.
  4. Measure the AC input current without a load using a clamp on AC ammeter. Electrically isolate the filter capacitor from the drive motor circuit. The drive motor leads need be kept intact so the drive motor will operate with the filter capacitor removed from the circuit. Re-measure the no load AC input. If the AC input current is significantly lower, replace the filter capacitor.
  5. Measure the AC input current without a load using a clamp on AC ammeter. Electrically isolate the inductor from the drive motor circuit. The drive motor leads need be kept intact so the drive motor will operate with the inductor removed from the circuit. Re-measure the no load AC input. If the AC input current is significantly lower, replace the inductor.
  6. Swap the existing drive motor with a known good drive motor.
Precor Error Code 21

Dec 08, 2013 | Precor C956 Treadmill with Cardio Theater...

2 Answers

Wireless headphones buzz


USE AN AC POWER ISOLATION TRANSFORMER
AC isolation transformers are common devices in electronic repair shops.
Technicians use them to isolate the power on their repair benches from
physical grounds in the repair shop (pipes, radiators, etc.) This is primarily for
safety reasons.
You can use the same isolation transformers to electrically isolate your A/V
equipment from connected AC power and thus break any ground loops. They
are typically placed in series with the power cord to the projector
We recommend the Tripp-Lite IS 250, IS500 or IS500 models

check this Ground Loop Isolator - RadioShack.com


http://www.cinemasource.com/articles/gnd_loop.pdf
good luck


good luck

Oct 15, 2013 | Audio Players & Recorders

1 Answer

Preform 735 error e21


please see the steps for follow. However you can RUN the software calibration for diagnostic.
God bless you
Error Description: Error 21, Too many Consecutive Power Requests- The error 21 observes a treadmill's power bit reading when the treadmill was operating at speeds above 1 mph. Power bits indicate the relative time that the motor controller drive circuit is turned on. Power bits is an indication of the amount of power the load is demanding from the motor controller. Error 21 indicates that at a speed greater than 1 mph, an excessive amount of power is being demanded from the motor controller.
Possible Reason:
  1. A badly worn deck and/or running belt can cause the error to appear when the unit is in use.
  2. Badly worn drive motor brushes may not be making proper contact with the drive motor commutator causing the error to occur when the unit is in use. The unit may also slow down or become sluggish when the load or speed is increased.
  3. A jumper may be required on the lower PCA if installed into a 120 VAC (Version 2) treadmill.
  4. A leaky or shorted drive motor filter capacitor (on units equipped with SCR motor controller) could increase the current demand enough to cause the error.
  5. A leaky or shorted drive motor inductor (on units equipped with SCR motor controller) could increase the current demand enough to cause the error.
  6. The high power demand is caused by a shorted or de-magnetized drive motor.
Recommended Action:
  1. Determine the amount of AC input current being drawn by the unit under no load and loaded conditions using a clamp on AC ammeter. The current displayed can be used to determine the condition of the deck and/or running belt. These same readings should be taken on a like unit, in good operating condition with a know good deck and running belt. The readings from the unit in good operationg condition can be used as the benchmark. Compare readings and replace* the deck and/or running belt if necessary. *Some units have a reversible deck. Be sure if the deck is being flipped or replaced, a new belt is installed on the new deck surface.*
  2. Inspect and repalce both drive motor brushes if necessary.
  3. Inspect the lower PCA (if unit is 120 VAC/ Version 2) for jumper. If jumper is not installed, error typically appears between 7 mph & 8 mph. Install jumper if necessary. CAUTION - DO NOT install jumper if unit is 240 VAC. Installing the jumper on a 240 VAC unit will casue the lower PCA to fail.
  4. Measure the AC input current without a load using a clamp on AC ammeter. Electrically isolate the filter capacitor from the drive motor circuit. The drive motor leads need be kept intact so the drive motor will operate with the filter capacitor removed from the circuit. Re-measure the no load AC input. If the AC input current is significantly lower, replace the filter capacitor.
  5. Measure the AC input current without a load using a clamp on AC ammeter. Electrically isolate the inductor from the drive motor circuit. The drive motor leads need be kept intact so the drive motor will operate with the inductor removed from the circuit. Re-measure the no load AC input. If the AC input current is significantly lower, replace the inductor.
  6. Swap the existing drive motor with a known good drive motor.

Sep 29, 2013 | Proform 735cs Treadmill Motor Control...

1 Answer

Chamberlain motor lift 700 Open Question My


Not meaning to sound like a prig, but have you tried adjusting the force/sensitivity settings? I'm not very familiar with the Euro/Aust/NZ Chamberlains, but if this is an AC drive, the capacitor may have died (you would probably see some type of oil leaking from the machine, depending on the case, or you'll find some inside the case) or the opener's control board may have given up the ghost. If this is a DC drive, it could be the transformer, or the DC drive board. If this is a newer machine, I'd call the Chamberlain Service number for your area and see what they tell you. If the opener is under warranty, they'll replace it.

Aug 26, 2013 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

What is diffrent between lathe machin & cnc machin


A Lathe machine turns a piece to be worked on usually along its longest axis. An operator or machinist manually moves a cutter or other tool against the rotating piece to remove and/or polish the material to a more refined state. Instead of manually, a Lathe can be controlled by computer with the speed of rotation and positioning of the cutter or other tool being done according to a program or set of numeric data in which case the Lathe would then be a CNC machine. A CNC machine can refer to any computer controlled machine which uses a set of numeric data to determine its operation which can be cutting, drilling, milling, etc.
For a more comprehensive description go to Wekipedia for Lathe at http://en.wikipedia.org/wiki/Lathe
and for CNC at http://en.wikipedia.org/wiki/Numerical_control

Jan 31, 2011 | Computers & Internet

2 Answers

I start work in a plastics factory as an electrician. I need to know the type of work I might expect to have to do. Maybe some diagrams of motors and generators may help.


You can start here with this video, what is a PLC. To get a better sense of What is a PLC, see http://plc-training.org To get a better sense of what all is involved on the industrial electrical side, see http://bin95.com/Industrial-Training-Videos/industrial_electrical_training.htm

Oct 17, 2009 | Electrical Supplies

1 Answer

Which transformer to use


To solve the problem I tosted the whole mess of wires and equipment and bought new equipment. $8,024 spent and now all the new converters are labeled. The industry needs to mark all equipment with DC-IN 9V or whatever. This is a real problem if you have kids and grandkids and too many different standards.

Dec 13, 2008 | AOpen AOR-401M Router (90.18R10.402)

2 Answers

Canon printer MP110


ok clink the above link directly 

Nov 16, 2008 | Canon PIXMA MP130 All-In-One InkJet...

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