Controller Sabroe UniSAB 4
Integrated controller for refrigeration compressors, chillers and heat pumps.
Sabroe UniSAB 4 controllers are connectivity hubs that help make sure refrigeration installations have the best possible performance, maximum uptime and lowest possible operating costs.
These important control units are pre-equipped and pre-configured with the connectivity equipment and protocols necessary for monitoring and controlling a wide range of compressors, compressor packages, chillers and heat pumps – as well as using this data for fault-finding and analysis.UNISAB 3 is no longer in production; it has been replaced by UNISAB 4. Spare parts for UNISAB 3 are still available.
- Functionality
- Connectivity
- Specifications
- Advantages
- Retrofit
- Application
Selected UniSAB 4 highlights
- New powerful hardware with more inputs and outputs
- Same footprint and cable-wire plug configuration as UniSAB III
- 10” colour touchscreen
- Embedded web browser
- User screens as mobile-friendly responsive web pages
- Secure internet connection
- Flexible and user configurable Multisab++ sequencing system
- Industrial communication protocols
- Available for retrofit
The UniSAB 4 controller has normal industry-standard communication ports fitted as standard, and therefore does not require additional communication gateways.
Data can then be made available via any kind of network, where virtually any computer can be used to monitor and operate the UniSAB 4 controller.
| Operating system | Linux |
| Communication protocols | Modbus TCP via on-board Ethernet interface. Profibus DP via optional serial interface card. Profinet (future). |
| Graphical user interface | 10.1” colour touchscreen. Web server, embedded web browser, cyber secure IoT connectivity. |
| Compressors supported | Fixed and variable speed reciprocating compressors, with or without solenoid activated unloading system. Fixed and variable speed screw compressors, with or without automatic capacity slide and VI-slide system. |
| Refrigerants | 12 preloaded refrigerant tables, e.g. R717, R600, R290, R744 and a universal. |
| Operating languages | 19 preloaded languages, e.g. English, Danish, French, German, Spanish. |
| Enclosure | IP55 box version, IP55 panel version |
| Ambient temperature | 0–55 °C box version |
| Ambient humidity | 10-90% non-condensing |
| Power supply | 100-240 VAC, 50-60 Hz |
| Max. own consumption | 20 VA |
| Max. supply fuse | 10 A |
| Cable entry | Flanges included |
| Dimensions (H x W x D) | 380 x 300 x 210 mm |
| Approvals | Marine DNV/GL UL, cUL |
| Weight | 6,5 kg |
- Advanced compressor protection and limiter system.
- Dynamic service interval computations.
- Smart, efficient capacity regulation systems for automatic control of capacity steps, capacity slide, VI-ratio and motor speed, curbing the wear of parts, securing the yield accuracy and optimising performance of the single package.
- Special heat pump compressor protective features.
- Built-in Multisab++ sequencing system for effective load distribution among multiple UniSAB 4s and UniSAB IIIs on compressors in a refrigerant pressure system or water temperature system, curbing wear, optimising performance, securing maximum plant uptime and yield accuracy of the total machine room compressor base.
- Remote control of capacity, remote setpoint, remote process sensor, outdoor compensation sensor.
- Automatic switching of parameter sets via digital inputs or communication interface (e.g. for seasonal switching between cold and hot side control of chillers/heat pumps) (future function).
- Condenser capacity control signal (future function).
- Control of pumps and valves on hot and cold side of heat pumps (for control of source/sink water energy and temperatures) (future function).
A wide range of UniSAB 4 retrofit kits are available to provide all the advantages of upgrading a wide range of existing compressors to a modern controls standard for improved performance and control system integration.
Applications supported:
- Industrial chiller applications.
- Industrial heat pump applications.
- Pump circulation and self-circulation refrigerant systems.
- DX systems.
