Woodward ProTech TPS - Configurable Logic

ProTechTPS Total Protection System Manual 26710V1
74 Woodward
For the speed fail timeout trip function to provide the intended fault
detection, 'Start' must be selected when the turbine or equipment is
to be started.
The timer can only be started when speed is below the Speed Fail
Setpoint. Selecting 'Start' has no effect if speed is above the Speed
Fail Setpoint.
Configurable Logic
The ProTechTPS provides configurable, or user-definable, logic to implement
custom safety/protection and test programs. This can be used in conjunction with
the configurable inputs and user-definable alarms and trips to monitor values
such as lube oil pressure, vibration, trip manifold status, and provide parameter
monitoring functions. Configurable logic is also used to implement the user-
defined test functionality. It is possible to generate (and reset) module trips,
alarms, or events and to use the associated logs and trip cycle time monitoring
as part of the safety system test validation.
The logic unit provides configurable logic that allows the user to define how the
input signals are used in detecting an unsafe condition and generating a trip
signal.
The configurable logic provides the following functions:
 Analog Comparators
 Analog Redundancy Managers
 Boolean Redundancy Managers
 Boolean combinatorial logic (AND, OR, NOT, etc.)
 Boolean Latches
 Delays
 Timers
 Lags
 Difference Detection
The user is responsible to validate that the configured logic unit's input-to-output
behavior performs as expected, with the intent of confirming the following:
 Verify that the logic unit was configured as intended.
 Verify that the documentation for the logic unit has been correctly understood
and applied.
 Verify that the information presented to the user by the Programming and
Configuration Tool (PCT) is correct.
Functional Examples
For robust programming and reliability system fault response, it is
recommended that the programming features are used to sense out
of range conditions. For example, when using a configurable input in
analog mode, this can be done by using the Lo, LoLo, Hi and HiHi
setpoints.