M-series Intrinsically Safe I/O - Emerson Process Management

DeltaV Product Data SheetJanuary 2013 – Page 8M-series Intrinsically Safe I/OIntrinsically Safe Power SupplyThe intrinsically safe power supply accepts 24 VDC power and converts it to 12 VDC to power the DeltaV I.S. I/O cards. Thenumber of I/O cards that can be powered by a single Intrinsically Safe Power Supply depends on the I. S. I/O card type.Optional power supply redundancy is supported by adding power supplies at a rate of n + 1. The following table gives thespecifications for the DeltaV I.S. I/O Power Supply.I.S. I/O Power Supply SpecificationsInput voltageOutput current18.5 36 VDC5AOutput voltage 12 VDC ± 5%Input protectionInput/output isolationInput connectionInternally fused, non-replaceable250 V ac rms (tested at 1,500 V ac rms)2 part screw terminal, each duplicatedCable size 2.5 mm 2Overvoltage protection Output protected at 110% to 120%Operating temperatureoptimum orientation (full load)worst case orientation-0 to 55°C (32 to 131 °F)0 to 50°C (32 to 122 °F)Storage temperature -40 to +85 °C (-40 to 185 °F)Relative humidityAirborne contaminants5 to 95%, non-condensingISA-S71.04-1985 airborne contaminants class G3Shock 10 g, 11 ms pulse width, to BS EN 60 068-2-27Vibration 2 g @ 10-100 Hz to BS IN60 068-2-6 and BS 2011 part 2.1MountingOn either slot of 2-wide power/controller carrierLED Indicators:Green – DC PowerInput DC power is applied and internal fuse/diode is sound.External connectors:Primary powerDC input, 3-wire