Hitachi SJ700-110HFEF2 Variable Frequency Drive
A European-version SJ700 inverter for 11 kW-class three-phase motor control with an integral EMC filter and braking transistor.
Overview
SJ700-110HFEF2 is a Hitachi SJ700-series variable frequency drive for the European 380–480 VAC class. The model is listed in Hitachi’s SJ700 catalog as the 11 kW-class HFEF2 configuration.
The drive platform provides sensorless-vector performance, application programming functions and protective diagnostics. The HFEF2 suffix identifies the European configuration with the relevant EMC arrangement and must not be dropped when comparing replacements.
Specs
| Manufacturer | Hitachi Industrial Equipment Systems |
|---|---|
| Model | SJ700-110HFEF2 |
| Product Family | SJ700 inverter |
| Motor Output Class | 11 kW |
| Input | Three-phase 380–480 VAC, +10% / -15% |
| Input Frequency | 50/60 Hz, ±5% |
| Rated Input Current | 30 A |
| Output | Three-phase, corresponding to the input voltage class |
| Control Platform | Sensorless vector / variable-frequency motor control |
| EMC Filter | Integrated filter for EN 61800-3 category C3 application |
| Braking | Built-in braking transistor; external resistor selected for the application |
| Minimum Braking Resistance | 35 Ω for the 11 kW model according to the SJ700 catalog |
| Reactor | Built-in zero-phase reactor |
| Configuration | European HFEF2 version; preserve complete suffix |
Features
- Provides high-torque vector control for demanding machinery.
- Includes programmable application functions for local machine logic.
- Integrates the EMC filter and braking transistor in the specified European configuration.
- Provides diagnostic and protective functions for drive and motor troubleshooting.
Applications
- Conveyors, mixers, extruders and process machinery.
- Fans, pumps and general industrial variable-speed motor control.
- Replacement of an installed SJ700 HFEF2 drive with the same voltage and power class.
Lifecycle
- Save parameters, motor auto-tune data, option settings and fault history before removal.
- Record motor nameplate, duty profile, carrier frequency and braking resistor details.
- Verify EMC grounding, cable shielding and panel cooling during replacement.
- Plan migration testing if an SJ700 successor changes parameter numbers or terminal behavior.
FAQ
Why must the complete HFEF2 suffix be retained for SJ700-110HFEF2?
It identifies the regional/configuration variant; comparing only SJ700-110 can miss EMC, voltage-class and hardware differences.
What determines whether the braking arrangement for SJ700-110HFEF2 is adequate?
Use motor inertia, deceleration time, duty cycle and regenerated energy to size the resistor and thermal protection; resistance alone does not establish duty capability.
Which files should be captured before replacing SJ700-110HFEF2?
Export parameters if possible and record motor data, auto-tune values, option cards, terminal assignments, sequence logic and recent fault history.
How should an SJ700 successor be evaluated against SJ700-110HFEF2?
Compare supply/motor ratings, overload duty, I/O logic, network options, braking, EMC, dimensions and every application parameter before cutover.
What commissioning sequence reduces risk after fitting SJ700-110HFEF2?
Verify insulation and grounding, test control I/O without production load, confirm rotation and current at low speed, then validate acceleration, deceleration and protection under controlled load.
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