Communication

Overview The Grundfos fieldbus concept is the ideal solution for complete control of pumps and pump systems. The Communication Interface Module (CIM) and the Communication Interface Unit (CIU) enable data communication via open and interoperable networks. The Grundfos CIM/CIU communication interfaces offer ease of installation and commissioning, user-friendliness, and great value for money in the long term. All modules are based on standard functional profiles for easy integration into the network and easy understanding of data points. CIM modules are add-on modules that allow communication with 11 to 22 kW E-pumps and the new Dedicated Controls for wastewater pumps. The CIU communication interface unit is for products with a GENIbus interface such as small E-pumps, circulation pumps and boosters. CIU units have an integrated 24 to 240 V power supply and are prepared for wall-mounting or DIN-rail mounting. The CIM/CIU interfaces support the following fieldbus standards: LON PROFIBUS DP Modbus RTU SMS/GSM/GPRS BACnet MS/TP Applications CIM/CIU 100/110 LON is mainly used for HVAC applications CIM/CIU 150 Profibus DP is mainly used for factory and process automation CIM/CIU 200 Modbus RTU is used for versatile automation e.g. HVAC and wastewater applications CIM/CIU 250 GSM is mainly used for water supply and wastewater applications CIM/CIU 271 GRM is used together with Grundfos Remote Management CIM/CIU 300 BACnet is used for building automation Features and benefits Based on standard functional profiles Prepared for future communications standards Supports a wide range of Grundfos products Easy to install and commission Flexible power supply