(Motor Controls and Drives)
From this Article:
While the inefficiency of driving a car with the gas pedal to the floor and then controlling your speed using the brake is obvious to any driver, many facilities use that very same approach for pump...
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(Motor Controls and Drives)
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Regeneration occurs in an AC variable frequency drive system when the load overhauls the motor. This can occur when trying to decelerate the load, or when some external force causes the motor to...
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(Computer Peripherals)
From this Article:
Ink jet printers causes a stir when they first appeared on the packaging scene years ago - if for all the wrong reasons.
However, a popular quote states: "Today's opportunities erase yesterday's...
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(Power Supply and Conditioning)
(Motors)
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Sometimes it is desirable to have the inverter trip when running at constant speed and the motor current falls below a certain threshold level. In the case of a pump, this would be indicative of...
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(Heating and Cooling Equipment)
From this Article:
When applying an inverter to centrifugal compressors on HVAC chillers, there are a number of factors to consider. For some compressors, lubricating oil circulation may be driven by the rotation of the...
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(Relays and Relay Accessories)
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Sometimes it may be necessary to drive a relay to activate certain external devices such as electromechanical brakes or clutches. Typically electromechanical relays have a 24VDC coil voltage. In the...
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(Power Supply and Conditioning)
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The following describes the components Hitachi offers to meet CE EMI requirements, Class A and Class B. The NF-CEH Filters provide EMI attenuation to meet Class A. The addition of the FC-H Ferrite...
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(Motors)
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One cause of premature bearing failure is so-called "electrical discharge machining." This problem has been around for many years. Current takes the path with the least resistance which is sometimes...
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(Power Supply and Conditioning)
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Welcome to the Hitachi America Inverter Technical Support Library. We hope that answers to most of your technical questions can be found in the documents on this page. However, should you not find the...
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(Motors)
From this Article:
Although Hitachi does not offer inverters above 3 hp specifically sized and rated for single-phase operation, single-phase power can be safely used with larger 3-phase rated inverters, provided that...
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(Power Supply and Conditioning)
From this Article:
Sometimes it may be desirable to use a remote START/STOP pushbutton arrangement together with an inverter. This often occurs when a machine is being retrofitted or upgraded with the addition of a...
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(Data Input Devices)
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When a food-contamination situation erupts, it's imperative that companies be well-equipped to trace the origins of that outbreak and act effectively to limit the public's exposure to pathogens....
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(Industrial Computing)
From this Article:
When a food-contamination situation erupts, it's imperative that companies be well-equipped to trace the origins of that outbreak and act effectively to limit the public's exposure to pathogens....
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