HISCREW NEXT II Controller
Hitachi Global Air Power now runs alongside Sullair under the same parent. Parts and manuals split between the two brands.
Manufacturer
Hitachi Global Air Power
Display
5.7-inch color LCD.
Years produced
~2014 – present (post Sullair/Hitachi realignment).
Power supply
24 VDC, color LCD.
Ambient range
0 – 45 °C.
Protection rating
IP54 front.
Relay outputs
Star/delta or inverter run enable, blowdown, dryer, alarm.
Used on
- Hitachi HISCREW NEXT II rotary screws
- OSP-series oil-flooded
- DSP-series oil-free (with variant)
Features
- Auto-return after power loss (selectable)
- Weekly scheduler
- Trend + fault history log
- Inverter (VSD) tuning menu
Interfaces
- RS-485 (Modbus RTU)
- Ethernet (Modbus TCP, option)
Sensor inputs
- Airend discharge temp
- Package discharge pressure
- Oil pressure (larger frames)
- Oil filter ΔP
Common fault codes
First checks
- Cooler & fan
- Oil level
- RTD verify
First checks
- Reset OL
- Phase currents
- Contactor
First checks
- Read drive fault code separately
- Check DC bus voltage
- Cooling fan on drive
First checks
- Loop wiring
- Swap sensor
Fault list is non-exhaustive and firmware-dependent. Always confirm against the controller’s on-screen help or OEM manual.
Wiring notes
- Japanese-style terminal blocks — snap-in disconnects
- Inverter comms fiber-optic on larger frames
Known issues & field notes
- English/Japanese firmware split — order region-correct board
- Fan-cooled control cabinet filter clogs quickly in fiber/paper mills
Service password default 0000 on many units, changed per commissioning. Factory-only 'engineering menu' code held by Hitachi service.
Manuals & literature
Hitachi Global Air Power — support portal
Parent of Sullair & Champion — industrial compressors
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