The IQ MODULE simplifies compressor installation and operation
In addition to monitoring the compressor’s key operating parameters, the IQ MODULE CM-RC-02 can also operate compressor motor protection and the oil heater and keep an eye on the discharge gas temperature and oil supply. The high pressure switch can be connected directly to the compressor module. The IQ MODULE CM-RC-02 simply requires the switch signal from the superior system controller to activate the compressor.
During the transition period, compressors can also be ordered with the software set to simulate the SE-B3 functions, in which case the compressor can be installed in the switch cabinet or even replaced without any modifications.

The IQ MODULE simplifies integration of compressor accessories and optimises operation
Additional functions included in the optional range of services for BITZER reciprocating compressors – for example, capacity control, oil level monitoring and control, and liquid injection – can be electrically connected to the IQ MODULE, which not only simplifies switch cabinet wiring, but also reduces the number of control outputs required.
There are three optional extension boards for the IQ MODULE CM-RC-02 to choose from, each with different features. With the IQ MODULE, the components selected in conjunction with the compressor can be ordered already wired, configured and tested by the BITZER factory in Schkeuditz, which simplifies compressor installation in the system and drastically reduces the amount of time necessary for production, troubleshooting and commissioning.
The extension board can also be added to compressors featuring the IQ MODULE CM-RC-02 even after delivery. The logic for operating the peripheral devices has been individually optimised to reduce energy consumption and increase compressor availability. If a system needs to be adjusted or retrofitted at a later date due to a change in refrigeration or heating requirements, for example, additional capacity control steps can be installed by arranging the wiring with the IQ MODULE – no modifications in the switch cabinet necessary.

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• Unified protection & operation concept for ECOLINE reciprocating compressors
• Selectable operation mode of the IQ MODULE CM-RC-02
  • Compressor operation mode (standard extent of delivery from the factory)
  • Protection mode (SE-B) (ordered ex-works or configured via BEST Software)
• Connection and operation of oil heater
• Motor temperature monitoring / discharge temperature monitoring / Oil level monitoring
• Monitor compressor start/stop cycles
• Operation of motor contactors (timing of relays by the IQ MODULE)
• Reduction of operation costs
• Increased compressor operational reliability
• Reduced planning effort
• Early compressor fault detection
• IQ MODULE simplifies and optimize compressor integration and operation
  • Easy system adaptations and operation of compressor peripheral devices with optional available extension boards (see options)
• Compressor operation data, fault history and access to compressor (digital) services

The BEST SOFTWARE and the BEST app can be used to configure the compressor and its accessories as well as display operating and historical data, with data visualisation optimised to provide on-site service technicians with prompt, straightforward support.

For detailed information and the wiring diagrams for electrical installation, please consult the KT-240 technical information for the compressor module and the AT-300 document on wiring diagrams, which can be found

here