Rockwell Automation Analogue input card 1771-IFE/C - 250 ohm load for HART

Hi,

Does anyone have experience with this card. Looking to find out if the card has required resistance ( 250ohm ) built in for HART or if an external resistor has to be wired in? It does mention 250 ohm input resistance but not clear whether its just stating the specification of the connected input or that is the card itself. Thanks
 

Attachments

Hi,

Does anyone have experience with this card. Looking to find out if the card has required resistance ( 250ohm ) built in for HART or if an external resistor has to be wired in? It does mention 250 ohm input resistance but not clear whether its just stating the specification of the connected input or that is the card itself. Thanks

It is written input impedance, which means it is the resistance which the card will offer to the loop. We also have Rockwell Systems,though not this card specifically. In the datasheet of the cards which we have in our plant,similar input impedance specs are provided and also we do not connect any resistors when using HART.

Thank You.
 
Top