Ease of Maintenance

Easy-removable construction for maintenance

Field replacement of cooling fan(s) and DC bus capacitors can be accomplished in a fraction of the time.

Using Logic terminal move to SJ700 without wiring change. Read SJ300 Parameter by SRW remote operator and write them in to SJ700

 

 

 

 

 

 

 

 

Easy-removable

 

 

 

Easy-removable

Cooling Fan

 

 

 

DC bus Capacitors

 

 

 

 

 

 

 

(SJ700: above 15kW

 

 

 

 

 

 

 

SJ700B: above 18.5kW)

 

SJ300series

 

 

 

SJ700series

 

 

 

 

Parameter

 

 

 

 

read write

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Removable Control circuit terminals (Move to SJ700 without rewiring)

 

*1 Control circuit terminals comparison table

 

 

 

Series

Input terminals

Output terminals

 

 

SJ700

9terminals

5terminals

 

 

SJ700B

 

 

(Intelligent 8terminals,FW)

(Open collector outputs)

 

 

SJ300

 

 

 

 

 

 

L300P

6terminals

2terminals

 

 

(Intelligent 5terminals,FW)

(Relay outputs)

 

 

 

 

 

 

 

 

 

 

 

Long life time components & Life time warning function

Long life time components

Design lifetime 10 Years or more for DC bus capacitors & Cooling Fan.

Cooling Fan ON/OFF control function for longer fan life.

*Ambient temperature: Average 40 deg C (SJ700B: 30 deg C) (no corrosive gases, oil mist or dust)

Design lifetime is calculated, and not guaranteed.

Life time warning function

Perform preventive maintenance before a failure occurs using the Lifetime Warning function.

DC bus capacitor, cooling fan, heat sink temperature and motor temperature can be monitored in order to replace components prior to failure.

Easy Operation

User selection of Displayed Parameters

Data comparison function

Allows display of only parameters changed from default.

User selected function

Display of up to 12 User Defined Parameters U001 to U012.

Basic mode (default)

Basic display mode for commonly used parameters.

Basic mode

Indication only

Basic Parameter Chose Basic

Parameter

Other Functions

-The direct input of function code selection is possible rather than scrolling through the list.

-Holding down the function key for 3 seconds, causes the display to jump to output frequency monitor (d001) mode from any menu location.

Network compatibility

A serial RS-485 Modbus-RTU port is standard. The SJ700 can communicate with DeviceNet, PROFIBUS-DP, and other networks with communication options.

-DeviceNet is a trade mark of Open DeviceNet Vender Association, Inc. -PROFIBUS-DP is a registered trade mark of PROFIBUS Nutzer Organization

Simple & Low cost wiring, Ease of installation and replacement

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Hitachi SJ700B manual Parameter, Read write, Control circuit terminals comparison table

SJ700B, SJ700 specifications

The Hitachi SJ700 and SJ700B series are renowned variable frequency drives (VFDs) that represent a significant advancement in motor control technology. Designed for industrial applications, these drives offer a versatile solution for managing motor speed, torque, and efficiency in a variety of settings.

One of the main features of the SJ700 and SJ700B series is their compact design. This allows for easy installation and integration into existing systems, which is crucial for minimizing downtime during upgrades or replacements. The drives support multiple mounting orientations, facilitating applications with space constraints.

Another standout characteristic is their advanced control algorithms. The SJ700 series uses vector control technology, which optimizes the performance of both AC and induction motors. This ensures high precision in speed and torque control, making it suitable for processes that require fine adjustments. The drives also feature automatic tuning capabilities, which allow for quick commissioning while minimizing the need for extensive parameter adjustments.

The SJ700 and SJ700B series are designed with energy efficiency in mind. They utilize advanced regenerative braking technology that recovers energy, reducing power consumption and improving overall system efficiency. Furthermore, these drives incorporate energy-saving features that optimize motor operation based on load requirements, contributing to a lower carbon footprint.

These drives come equipped with robust communication capabilities. They support various communication protocols such as Modbus, Profibus, and EtherCAT, making them easily integrable with modern automation systems. This flexibility allows for real-time monitoring and control, enhancing operational visibility and efficiency.

Reliability is another hallmark of the SJ700 series. Built with high-quality components, these drives exhibit excellent thermal management and protection against overvoltage, overload, and short circuits. The SJ700B variant boasts additional features such as enhanced fault diagnostics and improved environmental protection, making it suitable for more demanding applications.

In conclusion, the Hitachi SJ700 and SJ700B series variable frequency drives stand out in terms of compact design, advanced control technologies, energy efficiency, versatile communication options, and robust reliability. These features make them an ideal choice for a wide range of industrial applications, from manufacturing automation to HVAC systems, ensuring optimal performance and cost savings for users.