Most transmitters have a setting for which direction (High or Low) the transmitter should go when there is a failure (burnout direction).  The conventional wisdom is to set transmitters in loops that add energy to burnout high, then in the event of a transmitter failure, the loop will stop adding energy to the system.

We recently had an issue where we lost the wire (broken) between the transmitter and the DeltaV analog input card.  The loop went to -10%, regardless of the transmitter burnout direction.  This got us thinking about burnout direction for Analog inputs.  I know Thermocouple cards automatically burnout high when you have an open loop.  It seems Analog Input cards do not have a burnout direction, they are either -10% (0 mA) or 110% (24 mA) depending on if the problem is open loop or shorted wires.  We have all looked, and we cannot find any setting in DeltaV to control this behavior.  I have searched the internet, and it seems there are custom-rolled solutions using HART (if you have it) or looking at the AI function block status/errors.

A lot of our heater control loops route the temperature element through a third-party transmitter that has burnout settings, and it is sent to a DeltaV analog input card through a 4-20 mA loop.  In several cases, the third-party transmitter is in the same cabinet as our controller, so the likelihood of losing the analog connection between the transmitter and the DeltaV card is extremely low, and the scenarios that might cause that to happen would probably result in total loss of the cabinet anyway.  However, the rest of the temperature elements have the transmitter in the field, attached to the temperature element.  This exposes the analog wires to more opportunity to be damaged, which negates the burnout settings, exposing us to risk.

My question is if there is a built-in parameter/solution for burnout direction on Analog Input cards, or to see what others do to address failures of the 4-20 loop in loops that need to burnout high?