Hitachi S1 Inverters (VFDs)

S1 Series The new Standard in Sensorless Vector Control Drives

Compact design, dual rating features
Thanks to the compact design, less installation space is required. Flexible installation with DIN rail and wall mounting possibilities. Available to mount multi-inverter in side-by-side installation to be more effective and space-saving.

- Easy maintenance
- Various installation ways
- Excellent performance
- Multi-function and easy to use
- Potentiometer on the front for easy frequency adjustment

Dual rating to support space and cost savings
LD- Low Duty for Applications with normal load without large temporarily overload or torque. ND- Normal Duty for applications with heavy load and constant high torque.

Optional external keypad
- Supports optional external LED keypad
- The external LED keypad supports parameter copy function



Advanced thermal technology
Maintenance friendly thanks to easily removable cooling fan.



For space saving side-by-side mounting it is required to remove the protective film from the top heat releasing grids.

S1 Series 4.0kW - 500kW, dual rating

S1 is the new simple and easy to use inverter with top performance. Targeting for OEM equipment markets, mainly covering general applications like packaging, winding, Fan & Pump and many others.

Features
- Supports SVC control
- Enables high precision of speed torque control and fast speed response
- Integrates safety function-STO (Safe Torque OFF, SIL2)
- The unique I/F control is very suitable at low speed with high torque requirements
- The transition from rotating state to dc braking is very smooth. The current impact is small, and the current response of dc braking is faster
- Excellent function at "Catch-on-the-Fly"
- Solid plastic housing 4~75kW
- Solid metal housing 90~500kW
- ≤37kW Standard built-in DBU
- Internal C3 EMC filter, Optional external C2 EMC filter
- PID control function (with sleep function)
- Automatic voltage regulation (AVR), Torque compensate function
- Optional parameter copy LED external keypad, meeting the requirements of diverse applications

Typical applications
Pumps & Irrigation, fans, hoisting/crane, crushers, mills, conveyors, machine tools, CNC, mixers, DC motor replacement, servo drive, chemical, plastic extruder/granulator, variable speed motor control, energy saving



Excellent function at "Catch-on-the-Fly"
The S1 is very suitable for applications where large flywheel masses continue to run for a very long time after the power supply has been interrupted. These are for example applications with large fans or centrifuges. S1 detects the remaining speed and catches the motor at the correct position to accelerate back to the intended speed.

S1 Series IP54 version, dual rating (2.2kW to 110kW)

S1- IP54: Well equipped for decentralized drive applications with the robust S1 in high protection class. Many applications require that the inverter can be used in close proximity to the motor. A high protection class is therefore essential. In applications such as overhead air vents or agitators in the activated sludge tanks of sewage treatment plants as well as many other applications, it is often a mandatory requirement to be able to install the inverter in a harsh environment threatened by dust or moisture. The S1 in IP54 version offers this in an efficient version in a power range from 2,2kW -110kW with integrated C3 filter.



Features
- Ingress protection rating of (IP54) applicable to working environments dust and water vapor conditions (NEMA rating 3S)
- S1 IP54 the inverter is also designed as a dual-rate inverter to be used cost-effectively as ND or LD depending on the application and load tasks
- Optional built-in DC reactors can be integrated as accessories (30–110kW)
- Built-in brake resistors (4–37kW)

Safety Torque Function (common feature for IP20 and IP54)