Blind navigation

The best way to meet  the world is with dotech

Air Compressor

[SJ700] SJ700 Series

Use the convenient high-performance inverter with a simple adjustment
high torque, high-performance, high-function inverter

3-phase 200V class: 0.4 ~ 55kW / 3-phase 400v grade: 0.75 ~ 400kW


Easy to use, high-performance inverter with a simple adjustment

1. powerful driving achieve

the same torque more than 200% in the notice 0.3HZ
applicable to the lift system 0Hz sensorless vector control,
position control

2. trip inhibition achieved stable operation

over-current and over-voltage suppression
deceleration of DC BUS AVR function

3. the parent device does not need to program operation function

Simple operation sequence realized
cranes or overdrive automatic operation suitable for the condition of the load conveyor, etc. can also
have a parent device can be simplified, and cost savings in the space around the circuit of the control panel contributions

4. the peripheral circuits built into inverter

noise reduction that occurs in EMC noise filter to the inverter with standard
built-in (22kW or less) of the regenerative braking circuit (BRD)
micro-surge voltage suppression

5. maintenance simple

extra cooling to the removable structure fan, a smoothing capacitor, maintenance is more ease of control terminal
design life 10 nyeon achieved by adopting a long-life components
, further extending the oN / OFF control to the service life of the cooling fan can
condenser, aging degree, the temperature of the cooling fan and the motor of the cooling fan monitors can rise
lifespan notice enhanced ease of maintenance by the signal

6. simple parameter setting

data comparison functions, user-selectable features, ease of operation there are features such as the default mode

7. communications, network compatible

RS-485 Modbus-RTU to corresponding port as standard
option by the substrate can correspond to DeviceNet, PROFIBUS, CC-Link
Oper Network - available

8 global response

standards corresponding to international standards (UL, cUL, CE, C -Tick)
sink / source logic corresponds to the standard
width wide supply voltage specifications

9. environmental consideration

EU RoHS Directive correspondence
in improving environmental performance

 characteristics of Hitachi low-voltage inverter

1. trip faithful suppression
    overcurrent and overvoltage suppression by high starting torque and current control, with more than 0.5 Hz 200% driven
    by a strong reinforcement the operation function is realized.
    ※ full-load operation when multiple non-inverter protection IGBT module damaged even if the output short-circuit functions
    employed (Hitachi patented)

2. input signal enhancement
    analog (current / voltage) to increase output monitor (AM / AMI terminal) to an emergency resolution It was equipped with a blocking function.
    Do not leave the built-in CPU (software) on the intelligent input terminals on the middle inverter output only hardware circuitry 
    can be blocked.

3. The program operation function

   to download the program to the inverter can be simplified sequence of operation and accelerator operation can be automatic, depending on load conditions
   can be simplified and the host device, a peripheral circuit.

4. The peripheral circuit built into inverter

   was EMC filter and built-in video core to the AC power input, and expanded the internal model of the regenerative braking circuit (BRD).
   (WJ200: full capacity, SJ700: 22Kw or less, L700: 30Kw or less)

5. Micro-surge voltage suppression function

   suppresses the motor terminal voltage control pwm by Hitachi's unique approach to the control pulse 2 times or less of the DC voltage.

6. Simple maintenance

   cooling fan, simple replacement of the smoothing capacitor and the maintenance can be simple wiring without a detachable screw terminal board
   even more easily.

7. Life diagnostics Jobs

   was adopted to realize the long-lived component design life of 10 years, temperatures, and cooling fan motor temperature rise by the lifetime diagnostics
   is life warning signals such as output.

8. The improvement in environmental performance

   within the substrate part of the varnish coating, plating the copper bar to the adoption of the standard has improved environmental resistance.

9. The global response
   suited to the world standards (CE, UL, C-UL ) , and you can respond to an open network of DeviceNet, Profibus etc.