Eaton PRC-E Series Instruction Manual

Contents

84Appendix B: Digital SwitchPRC-E Series Instruction Manual MN014003EN August 2015 www.eaton.comDigital Switch field devices connectionsInput wiringEach Digital Switch has one analog input (AI) and one digitalinput (DI). The digital input requires a dry contact closurebetween the DI terminal and GND terminal. This input istypically connected to a low voltage occupancy sensor orany device with dry-contact output.otee:N Digital input option is not available on 6-buttondigital switches.The analog input accepts 0–10 Vdc signal from externaldevices.The AI is typically connected to interior/exterior photosensors to monitor light levelsOutput wiringEach Digital Switch has one analog output (AO) to directlycontrol analog devices. The analog output provides0–10 Vdc signal. This output is typically used to controlfluorescent and LED lighting equipped with 0–10 Vdcdimming control circuitry. Up to 20 fluorescent ballasts or10 LED drivers can be controlled.External device powerEach digital switch includes a 12 Vdc/20 mA output (VOUT)for connecting field devices such as, occupancy sensors andphoto sensors.otee:N The power output of the switch has limited currentcapabilities. Connecting devices that require thehigher current to this output will disable operationof the switch.Table 6 Digital Switch I/O ConfigurationPushbuttonConfiguration AnalogInput AnalogOutput DigitalInput 12 VdcOutput2-button n n n n4-button n n n n6-button n n — nFigure 38 Typical Digital Switch Field Devices Wiring(+)(-)DSN from PreviousDigital Switch orcompatible PRCcontrollerDSNto next Digital Switch*Note - for additional information onthe DSN see drawingPRCE-DigitalSwitchNetworkDSN Network23 AWG Cat 6 CableSingle Occupancy Sensorw/ Dry-Contact InputDIAIGNDAOVdcOutInPhotosensorw/ 0 to 10 V Signal LevelTo additional ballasts or LED driversMaximum 10 mAGNDVDC (12V)DIDI (Digital Input-Not avilable on the6-button switch)AI (Universal Input- analoglevel or dry-contact)GND Ground- I/O commonAO (Analog Output-0–10 V 10 mA max)VDC (12 Vdc ext. devicesupply 20 mA max)AOGNDAIAOGNDVdc (12 V)DIAIAOVdc (12 V)DIAILED Drivers and Fluorescent Ballasts0 to 10 V DimmableGNDVdc (12 V)DIAIAODry-Contact Override SwitchGNDDIAIAOMultiple Occupancy SensorsRequire SwitchpackL NAdditional OccupancySensors.(See sensor manualsfor further information)Vdc (12 V)SP20-##BlueBlueBLKWDimming Circuit(+ -)OR BK R BLGYPOR BK R BLGYPOR BK RGY0 0