AK-LM 340 RS8GV202 © Danfoss 2016-06 41Supply voltageSupply voltage is only connected to the controller module. Thesupply to the other modules is transmitted via the plug betweenthe modules. The supply must be 24 V +/-20%. One transformermust be used for each controller. The power supply must be aclass II. The 24 V must not be shared by other controllers or units.The analog inputs and outputs are not galvanically separatedfrom the supply.The + and – 24V input must not be earthed.Power supply sizeThe power consumption grows with the number of modules used:Module Type Number á EffectController 1 x 8 = 8 VAExtension module 200-series _ x 5 = __ VAExtension module 100-series _ x 2 = __ VATotal ___ VA12Example continued:Controller module 8 VA------Power supply size (least) 8 VACommon pressure transmitterIf several controllers receive a signal from the same pressure trans-mitter, the supply to the affected controllers must be wired so thatit is not possible to switch off one of the controllers without alsoswitching off the others. (If one controller is switched off, the sig-nal will be pulled down, and all the other controllers will receive asignal which is too low)
