The deadband concept in AB analogic modules

Hello everybody,

Just a simple question... As showed in the picture: If I set my alarm deadband to 136, does that means that I'll get two symmetric deadbands High and Low like...


normal operating range from 25839 to -25839

AND

high deadband between 25839 and 25703

AND

low deadband between -25839 and -25703 ?

(25839 - 136 = 25703 ; -25839 + 136 = -25703)

Might it be possible to set an alarm deadband asymmetrically for the Low and for the High?

Thanks in advance

You are spot on with your deadband calculations:-

High Alarm ON at +25839, OFF at +25703
Low Alarm ON at -25839, OFF at -25703

You cannot set the deadband control at different values for the two alarms in the module configuration, but you could use deadband control in logic instead, by using zero deadband in the module, and by inspecting the data directly.

OTL a new High Alarm bit with GEQ +25839, OTU it LES +25703 *
OTL a new Low Alarm bit with LEQ -25839, OTU it GRT -25703 *

Use you own different values for the OTUs as indicated * above

Thanks for help!