CoriolisMaster FCB400, FCH400 CORIOLIS MASS FLOWMETER | OI/FCB400/FCH400-EN REV. E 5324 V DC loop power supply (plug-in module)Use of the ‘loop power supply (blue)’ plug-in card allows apassive output on the transmitter to be used as an activeoutput. See also Connection examples on page 53.G11739V1+I E+24 V DC0VV2-OC1Figure 40: (I = Internal, E = External)The plug-in module can only be used in slot OC1.Loop power supply 24 V DCTerminals V1 / V2Function For active connection of passive outputsOutput Voltage 24 V DC at 0 mA,17 V DC at 25 mALoad rating Imax 25 mA, permanently short circuit-proofNoteIf the device is used in potentially explosive atmospheres, theplug-in card for the loop power supply may only be used tosupply a passive output. It is not allowed, to connect it tomultiple passive outputs!Modbus / PROFIBUS DP interface V1 / V2 (plug-in card)A Modbus or PROFIBUS DP interface can be implemented byusing the ‘Modbus RTU, RS485 (white)’ or ‘PROFIBUS DP, RS485(white)’ plug-in cards.G12386DRV2-I EV1+ ABOC1Figure 41: Plug-in card as a Modbus / PROFIBUS DP interface (I = internal, E = external)The corresponding plug-in card can only be used in slot OC1.For information on communication through the Modbus orPROFIBUS DP protocols, refer to chapters Modbus®communication on page 61 and PROFIBUS DP® communicationon page 62.Connection examplesInput and output functions are configured via the devicesoftware in accordance with the desired application.Parameter descriptions on page 95Active digital output 41 / 42, 51 / 52, V3 / V4When the ‘loop power supply 24 V DC (blue)’ plug-in card is used,the digital outputs on the basic device and on the optionmodules can also be wired as active digital outputs.NoteEach ‘loop power supply (blue)’ plug-in card must only power oneoutput.It must not be connected to two outputs (for example digitaloutput 41 / 42 and 51 / 52)!G11744-01AV2-V1+I E+24 V , max. 25 mADC0V41+42/52BOC1012345R BA ‘Loop power supply (blue)’ plug-in card in slot 1B Digital output, digital output 41 / 42Figure 42: Active digital output 41 / 42 (example)The connection example shows usage for digital output 41 / 42;the same applies to usage for digital output 51 / 52.G11913AV2-V1+I E+24 V , max. 25 mADC0VBR BV4-V3+OC2 OC1A ‘Loop power supply (blue)’ plug-in card in slot 1B ‘Digital output (green)’ plug-in card in slot 2Figure 43: Active digital output V3 / V4 (example)