GE GFK-0787B user manual Voting for One Analog Input

4

Voting for One Analog Input

One input may be present in a non-voted input group, in a Simplex input group, in a Duplex input group where one input has failed, or in a Triplex input group where two inputs have failed.

In a non-voted input group, the actual input is always provided to the application logic.

In a voted input group, if only one input is available the result of the voting depends on the Voting Adaptation mode that has been configured for the input group.

Discrete Input Voting with One Input Present and Voting Adaptation Set to 3±2±1±0

For a Simplex Input group (one input) the voted input is the same as the actual input. This is also true if there is just one actual input present on a Duplex or Triplex group configured for 3±2±1±0 Voting Adaptation.

	Field Input Data
	Input 1	152
Field Input	Input 2	150
Data
	Input 3	175
Duplex State
		lowest
(low, high, or average value)
Default State (hold last,
		max.
minimum, or maximum)

Single Input Provided to Application Logic

152

GMR Software Performs

1 out of 1 Voting if Voting Adapta-

tion is 3±2±1±0

100minimumvalue

175maximum value

Discrete Input Voting with One Input Present and Voting Adaptation Set to 3±2±0

Configuring a Duplex or Triplex input group for 3±2±0 Voting Adaptation prevents the data from just one input being used as the only input data for that group. If a Duplex or Triplex group configured for 3±2±0 Voting Adaptation has just one input present, the configured input Default State is used instead of the remaining actual input.

	Field Input Data
	Input 1	152
Field Input	Input 2	150
Data
	Input 3	175
Duplex State
		lowest
(low, high, or average value)
Default State (hold last,
		max.
minimum, or maximum)

Single Input Provided to Application Logic

175

GMR Software Performs

1 out of 1 Voting if Voting Adapta-

tion is 3±2±1±0

100minimumvalue

175maximum value

4-16	GeniustModular Redundancy Flexible Triple Modular Redundant (TMR) System	GFK-0787B
	User's Manual ± March 1995