3.8 Input Circuits

This page configures the usage of the input circuits procided by the IO-FEP. The IO-FEP monitors 32 general purpose inputs (48 on the IO-FEP-E). Each input may be configured as a simple state monitor, signalling it's state as ON/OFF, or as alarm input signalling it'state as OK/FLT.

The following properties may be set for each individual input:

• Type --- Defines the main purpose / type of the input:

  • UNUSED --- The input is not connected / not used. te .ns INPUTThe input is used for general purpose state monitoring. It reports it's state as ON/ OFF.
  • ALARM --- The input is used for alarm monitoring. It reports it's state as OF / FLT.

• Name --- When you activate an input at the 'Type' setting, the IO-FEP names this input as 'Ixx'. You may name the input in a more meaningful way by entering a circuit name at this place.

• Polarity --- 'NORMAL' polarity signals 'ON' or 'FLT' for a closed contact, 'INVERTED' polarity reverses this behaviour.

• Delay --- If this parameter is set to a non-zero value, the IO-FEP requires the input signal to be stable for at least the given time before a new state is signalled. You may use the delay to prevent short fault 'spikes' from being signalled.