Monitoring Master/slave operation 7 6 In open bayed enclosure systems that are not separate from 4 one another, cooling units and air/water heat exchangers with Comfort control should always be used as they may be placed in master/slave mode via bus cable, part number SK 3124.100: 1 Simultaneous activation and deactivation of the devices 3 Parallel fault and door limit switch function Even temperature distribution across all sections of the enclosure 5 2 5 1 Control cabinets 5 Door limit switch 2 Wall-mounted unit 6 Connection terminals 3 Roof-mounted unit 1 and 2 of the cooling unit 4 Comfort controller 7 Master/slave unit Master/slave operation The interface board (part number SK 3214.200, see Further information may be found in our assembly and Catalogue 33, page 477) is an extension for TopTherm operating instructions, at cooling units and air/water heat exchangers with Comfort www.rittal.com –> Products –> Product search control. It may be used to monitor a master/slave application –> SK 3124.200. of up to 10 cooling units. Control is achieved via standard- Warnings and alarms from the interface board ised interfaces RS-232 (DB9) or RS-485, a PLC interface. RS-422 (RJ 45 jack) is the connection to the Rittal CMC III. Interior temperaure too Sensor failure, ambient Remote monitoring via TCP-IP, graphical interfaces for opera- high temperature tion, evaluation and control, documentation, and connection Icing Sensor failure, icing to additional sensors for access control facilitates monitoring. High-pressure sensor sensor Leakage Sensor failure, conden- The extension card is built into a 1 U plastic housing. Condenser/fan defect sate level A voltage supply of 24 V DC is needed. This can be supplied from the CMC III via long-range power pack or Evaporator coil/fan defect Sensor failure, internal Compressor defect temperature externally via a Kycon connector. Sensor failure, condenser Phase missing or incorrect temperature EEPROM defect Technical System Catalogue/Climate control 3 - 88
Technical System Catalogue Climate Control
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