OJ-DC Energy-Efficient Drives for Scroll Compressors

Designed for compressors in AHUs and chillers. Built on proven OJ Drives® technology. With more than 25 years of experience in developing drives for ventilation systems, designing a dedicated drive for scroll compressors was the most natural thing for us to do.

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H4 housing OJ DV GEN II from OJ Electronics A/S
H4 frame size: 4-7.5kW
H5 Housing OJ-DV GENII from OJ Electronics A/S
H5 frame size: 11-15kW

OJ compressor drive seriesA series of frequency converters dedicated for compressors

This new series of drives is dedicated to compressor systems comprising 5 output variants (from 4 to 15kW) fitted in 2 different enclosures to match scroll compressors for chillers and AHUs.

Dedicated compressor functions
A dedicated drive for scroll compressors in your chiller or AHU system ensures optimal lubrication control and flawless performance regardless of variable loads or capacity. The drive is matched with your compressor specifications.

Robust and built to last
With a durable aluminium enclosure, the compressor drive series can continuously operate in almost any environment from -40°C to +50°C / -40°F to +122°F.

Energy efficient
The OJ compressor drives save energy while providing reliable, highly efficient power for the compressor. With these drives, there will be efficiency of up to 97%.

Integrated safety
The OJ compressor drives includes Safe Torque Off (STO) to prevent unintended motor operation by disabling the drive output without requiring external contactors. Compliance with IEC 61800-5-2 and ISO 13849-1.

Plug & Play technology
Pre-programmed compressor settings help maximise functionality, while the removable front cover facilitates easy access to connectors for instant system configuration.

Norms and standards.
The OJ compressor drive series comes with a fully integrated EMC filter and therefore meets norms for emissions and immunity in industrial and residential areas EN 61800-3 (C1 and C2). IE requirements can be easily fulfilled using a PM motor with an OJ compressor drive.

The OJ compressor drive series is cULus recognised according to UL 61800-5-1 and CS22.2.174.

Product features:

  • 5 power variants
  • 2 enclosure sizes
  • PM and BLDC motors
  • Ignition-protected
  • CE, UL, CSA
  • Safe torque off

Product Documents

Product Sheets
Product Sheet, OJ Compressor Drives, English
File type/size:PDF ( 336.92 KB )
Brochures
Brochure, OJ compressor drives, English
File type/size:PDF ( 2.70 MB )
Product Catalogue EU, HVAC Controls and Drives, 2025, English
File type/size:PDF ( 2.81 MB )
Product Catalogue USA/Canada, HVAC Controls and Drives, 2025, English
File type/size:PDF ( 885.08 KB )
User Manuals
User Manual, OJ DC, English
File type/size:PDF ( 4.43 MB )
Protocols
BACnet Protocol MS TP, OJ DC, English
File type/size:PDF ( 1.51 MB )
Modbus Protocol, OJ DC, English
File type/size:PDF ( 1.61 MB )
Misc.
Certificate of Compliance, Ignition Protected Components, OJ DV / OJ DC, 11.0 - 15.0 kW (H5), 2024-12
File type/size:PDF ( 307.73 KB )
Certificate of Compliance, Ignition Protected Components, OJ DV / OJ DC, 4.0 - 7.5 kW (H4), 2024-12
File type/size:PDF ( 347.45 KB )
H4 housing OJ DV GEN II from OJ Electronics A/S

OJ-DCCustomised
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We deliver high-quality product platforms as the perfect foundation for your customisation and differentiation. Having unique, customised solutions enables you to set yourself apart in the market on the exact parameters that are important to you and your customers.

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