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Hitachi VFD Drives

Hitachi America, Ltd., Industrial Components & Equipment Division, today announced two new 100 V Class models in the innovative WJ200 series of inverters. The new models are rated at 1/2 hp and 1 hp, 100-120 VAC, single-phase input, and 200-240 VAC, 3-phase output. The WJ200 series sets a new benchmark for performance, flexibility and functionality in micro-size AC drives.

Hitachi WJ200 Series Compact Sensorless Vector AC Drives Distributors

Hitachi's Unique 100 V Class AC Variable Frequency Drive

The WJ200 is a sensorless vector (SLV) drive capable of 200% or greater torque across the speed range. Speed regulation at low speed is dramatically improved - fluctuation is half that of previous models. Improved trip avoidance measures have been incorporated for unsurpassed system reliability and availability. The WJ200 is distinguished by its integrated PLC-like functionality. With its powerful Easy Sequence (EzSQ) logic controller function, programs up to 1024 lines can be created on a PC using a structured language editing tool.

These programs can then be transferred to the WJ200 to control its operation and allow very sophisticated control schemes to be created without the use of external controllers. Simple position control applications are also possible with the WJ200 utilizing the integrated pulse input. Together with EzSQ, intricate motion profiles can be developed. Further adding to its flexibility, the WJ200 has the capability to drive both induction motors and permanent magnet (PM) motors - a single drive for two motor realms.

A new EzCOM peer-to-peer communications function is standard and allows multiple WJ200s to share data. One drive is designated as the "administrator," and controls the network. Other drives on the network can be master or slave, with masters able to write data to any designated slave(s). Master/slave roles are rotated under the control of the administrator automatically. Up to 8 masters can reside on the network, and up to 32 drives (up to 247 drives, if external signal repeaters are used). The administrator can be master or slave also. EzCOM allows for creation of sophisticated coordinated systems without any additional external hardware or programming.

Other desirable standard features include a safe-stop function (meets ISO/IEC standards), password protection of parameters, real-time clock, standard Modbus/RTU RS-485 serial port, micro surge voltage suppression, dynamic braking circuit, and much more. The WJ200 is designed for long service with bus capacitors and cooling fans designed for 10 year life and varnish coating of circuit boards. The WJ200 also is RoHS compliant. Option boards will be released in the near future to allow communication via Ethernet/IP, DeviceNet, CompoNet, ProfiBus, CANopen, and others.

Hitachi X200 Series Trip-Less Compact AC VFD Distributor

Hitachi Introduces Microdrive Pump Sleep Mode Functionality

Hitachi America, Ltd. is one of the leading suppliers of AC variable frequency drives (industrial inverters) that are utilized for an array of applications in the Americas. Hitachi industrial AC variable frequency drives are equipped with several advanced features, and deliver unprecedented performance, reliability, and flexibility. Hitachi holds deep expertise in manufacturing new generation AC variable frequency drives that offer high level functionality and accuracy.

Hitachi America, Ltd., Industrial Systems Division, today announced the availability of Pump Sleep Mode functionality in its X200 and SJ200 series microdrives. The functionality is implemented utilizing only the inverter's built-in PID control, logic and timing functions as a basis. Together with parameter settings, external jumper wiring is all that is required to realize the sleep mode operation.

Standard PID control may, depending on system demand, allow a pump to operate at undesirably low speeds for prolonged periods of time, which can cause mechanical issues with certain pump types. In general, it is a wasteful use of energy, since most pumps do not generate significant flow or head at low speeds. A means is needed to stop the pump when no pumping is actually taking place. The term "sleep mode" is used to describe such a means. The implementation requires no additional hardware beyond what is required for standard PID operation. The simple set-up and wiring is described in an Application Note (AN080717-1) which is available to view or download in the Technical Support Library area of Hitachi America's web site.

Hitachi L700 Series Industrial AC Adjustable Speed Drives Distributor

Hitachi Introduces Advanced Industrial AC Variable Frequency Drives for Fans, Pumps, Conveyors and More.

Hitachi America, Ltd., Industrial Components & Equipment Division, today announced the introduction of the L700 series of industrial AC variable frequency drives. The L700 significantly expands on the performance, capabilities and functions of its predecessor, the L300P.

Hitachi has broadened the applicability of this series by incorporating the improved sensorless vector (SLV) control algorithm that was first developed for the SJ700 series. This allows the L700 to develop 150% torque at 0.5 Hz, ideal for a wide range of applications beyond just fans & pumps. The L700 also has a number of features built in that make the commissioning process quick and trouble free. Another notable upgrade in the L700 is Hitachi's EzSQ (Easy Sequence) built-in programming function, which actually provides the functionality of a PLC built into the inverter.

In many cases, the need for a separate PLC can be eliminated due to this internal capability. The program is developed on a PC and then downloaded to the inverter, using the simple to use EzSQ software provided at no charge. Hitachi has designed many other new and helpful features into the L700 industrial AC variable frequency drive, such as the patented micro-surge voltage suppression (to protect the motor winding insulation), advanced trip avoidance functions, configurable sink/source logic on digital inputs, built-in dynamic braking circuit in models up to 30hp (22kW), a built-in EMC filter in models up to 200 hp (160 kW), and much more.

The L700 also has features customers have come to expect from Hitachi variable frequency drives, such as built-in RS485 Modbus/RTU communication, and options for other communications networks, such as Ethernet Modbus/TCP, DeviceNet, Profibus and LonWorks. The L700 can be configured via the front mounted keypad or using Hitachi's ProDrive PC based software. A true global product, the L700 carries CE, UL, cUL and c-Tick marks, and is RoHS compliant.

Hitachi NE-S1 Series Economical Drives with Simple Operation Distributors

Hitachi America Announces the Addition of 400V Class Inverters to the NES1 Economical Series

Hitachi America, Ltd., Industrial Components & Equipment Division, today announced the addition of 400V class inverters to the NE-S1 series. Hitachi America, Ltd. is pleased to offer these economical and simple to use inverters in the popular HP range of 1/2 to 3 HP with availability in late October. With its ultra-compact design, the new 400V class NE-S1, like the 200Vclass, is designed with both OEMs and System Integrators needs in mind.

With popular preconfigured and simple default settings, the NE-S1 400V class variable frequency drive offers end users and integrators the ability to use the control as is right out of the box. As with its 200V class counterparts, the NE-S1 400V class variable frequency drive has a wide variety of options available that can be used to configure the control for specific applications. These powerful pre-configured inverters allow for the use of remote mounted speed potentiometers, contacts or switches, and for preset speed selections to be used without any parameter changes, thus saving time during the installation and integration process. This simplified installation adds value to the OEM and system integrators' overall final products.

Another important new option available on the 400V class NE-S1 inverters is a full keypad, complete with built in speed potentiometer, making the NE-S1 a versatile option for distributors who use MRO applications. High volume applications will benefit from the use of our downloadable ProDriveNext software to configure the inverter for further flexibility. The NE-S1 allows end users to choose the level of customization required that best fits their application. Other sophisticated features and options are available including:

  • Pre-configured parameters
  • Optional field installed operator display
  • 3 wire Start Stop compatible
  • RS-485 Modbus RTU standard
  • Logic and time delay functions built in
  • Energy saving function standard
  • CE/UL/cUL/c-Tick approvals
  • Optional door mounted display
  • Loss of signal protection
  • Sink or Source input compatible

Hitachi SJ700 & L700 Series Variable Frequency Drives Distributors

Hitachi Introduces High Performance SJ700D AC Drive Model

Hitachi America, Ltd., Industrial Components & Equipment Division, today announced the new SJ700 model inverter, with a 440 A output current capability. This new model fills in the gap at 300-350 hp in the SJ700 series, which now completely covers the range from 1/2 to 600 hp.

The SJ700 significantly expands on the performance, capabilities and functions of its predecessor, the SJ300. Hitachi reasserts its technological leadership with an improved vector control algorithm and auto-tuning function that enables the open-loop SJ700 (SLV) to develop more than 200% starting torque at 0.3 Hz. Using Hitachi's unique "0 Hz Domain" open-loop control mode, the SJ700 can develop 150% torque near 0 Hz, ideal for vertical lift applications. In closed-loop mode with encoder feedback, the SJ700 performance is unmatched, delivering in excess of 100% torque at 0 Hz.

Another major new element in the SJ700 is Hitachi's EzSQ (Easy Sequence) built-in programming function. It's like having a PLC inside the inverter! In many cases, the need for a separate PLC can be eliminated. The user develops EzSQ programs on a PC, and then downloads them to the inverter using the simple-to-use configuration/programming software provided at no charge. The SJ700 can deliver true servo-like position control when mated with a general-purpose induction motor and encoder, offering a low-cost motion control alternative. The SJ700, given a position command, speed command, and acceleration/deceleration times, can move the motor shaft from position A to position B following the defined profile and then maintain the shaft in "servo lock" status.

Hitachi has added other new features into the SJ700, such as patented micro-surge voltage suppression (to protect the motor winding insulation), advance trip avoidance functions, configurable sink/source logic on I/O, built-in dynamic braking circuit in models up to 30 hp (22 kW), built-in EMC filter up to 75 hp (55 kW). The SJ700 also includes built-in RS485 Modbus/RTU communication, and options for other communications networks, such as Ethernet Modbus/TCP, DeviceNet, Profibus and LonWorks. Others, such as Ethernet/IP are in the works. The SJ700 can be configured via the front-mounted keypad or using Hitachi's ProDrive PC-based software. Designed to be a product for the global market, the SJ700 carries CE, UL, cUL and c-Tick marks, and is RoHS compliant.

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