Hitachi SJ700/SJ700D AC Drives

A series of electric drives SJ700/SJ700D from the company Hitachi It is designed to work with applications of various levels of complexity and, due to its high accuracy and efficiency of process management, meets the highest requirements. The range of power characteristics covered is designed for small, medium and high-power applications. This type of frequency converter is designed to control asynchronous and synchronous motors (permanent magnets) using vector control technology with sensorless control (optional feedback module is also available), advanced capabilities for maximum control. They can be used for normal and heavy load levels by selecting the appropriate mode. The SJ700D series can be used for both constant and variable torque applications.

A universal set of functions for ease of use and flexible adjustment of production cycle parameters. The applied protective measures ensure stable and safe operation of the drive.

Technical characteristics of Hitachi SJ700/SJ700D electric drives

• Supply voltage: 3AC 380 - 480 V;
• Power of electric motors: 0.75 - 400 kW;
• Output current: 2.8 - 800 A;
• Management methods: scalar, vector (sensorless, touch with optional SJ-FB module);
• Output frequency: 0.1 - 400 Hz;
• Permissible overloads: the normal mode is 120% of the nom. current for 60 seconds (150% - 5 seconds), heavy mode - 150% of nom. current for 60 seconds (200% - 3 seconds);
• Enclosure protection class: IP20, IP00;
• Interfaces: RS485, Modbus RTU, optional DeviceNet, PROFIBUS;
• Visualization and customization tools: control panel with display and push-button navigation (optional with data copying function and potentiometer), LED display, EzSQ software for control and parameterization using a personal computer;
• Other features and functions: up to 16 speed stages, free configuration of V/f dependence, automatic and manual adjustment, torque control, AVR function, energy saving, PID controller, real-time accounting, acceleration and braking settings, restart, protective algorithms, dual engine control and others.

Hitachi SJ700/SJ700D I/O Configuration

• Analog: 3 inputs and 2 outputs;
• Digital: 8 inputs and 5 outputs;
• relay: 2 outputs;
• connection of thermistors.

Optional Hitachi SJ700/SJ700D Drive Modules

• I/O expansion boards.
• Modules of industrial communication protocols.
• Additional anti-interference filters.
• Braking resistors.
• Input/output channel reactors.

Parameters of standard sizes of Hitachi SJ700/SJ700D electric drives

Supply voltage 400 V, 3 phases 

You can buy Hitachi SJ700/SJ700D frequency converters, find out the price and more information about the products by contacting our specialists.