About the IS230TDBTH4A
The IS230TDBTH4A is a Discrete I/O Module from the Mark VIe Series that was manufactured by GE Energy. This module is comprised of an IS200TDBT terminal board and three PDIO I/O packs. The IS230TDBTH4A can also be connected to an IS200WROB option board for expanded relay functions.
IS230TDBTH4A Specifications
The IS230TDBTH4A accepts 24 group isolated contact inputs supplied with a nominal 48 V dc wetting voltage rating. The IS230TDBTH4A also provides 12 form-C relay outputs. There are some current input resistance limits on the IS230TDBTH4A. These are:
- First 21 circuits are 2.5 mA rated
- Circuits 22 through 24 are 10.4 mA rated
There are several diagnostic features that the IS230TDBTH4A has. One of these features is the monitoring of the wetting voltage. If the wetting voltage drops below 40% of the nominal voltage, a fault will be set.