Manual 26710V1
ProTechTPS Total Protection System
Woodward
77
When the overspeed trip occurs, it is logged in the modules’ trip log and noted as a test.
If the test fails, a test failed alarm is generated and logged in the module’s alarm log.
To initiate the Auto Simulated Speed Test via Modbus, the Initiate Auto Speed
Test command (Modbus address 0:0102) must be followed by the Confirm Auto
Speed Test (Modbus address 0:0101) within 10 seconds. The intent of the
confirmation is to prevent an erroneous signal from initiating a test. The test can
be aborted from either the front panel or via Modbus.
Auto Sequence Test
This test is similar to the Auto Simulated Speed Test but allows the ProTechTPS
to perform the test automatically on each module on a regular basis. The test can
be initiated from the front panel, from configurable logic/inputs or by a
configurable timer. If the configurable timer is used, the test Interval can be
configured from 1 to 999 days. When initiated from the front panel or configurable
logic/inputs, the test interval will be reset.
This test will automatically be applied to all three modules. First, the test will be
performed on the A module, and when the overspeed trip occurs, it is logged in
the modules trip log and noted as a test. Then, the A module is automatically
reset and the B module is tested. When the B module test is completed, the C
module is tested. In this way periodic testing can automatically be performed on
a regular basis with no operator intervention.
The test can be configured to pause after each module is tested and wait for a
continue/acknowledge signal from configurable logic/inputs. The test will wait for
a configurable amount of time and if that time is exceeded, the test will abort.
The operator can disable the Auto Sequence test from the front panel of the
module. When the Auto Sequence test is disabled, or if any module is in trip,
alarm, or test, the Time Remaining Until Next Test will be prevented from
counting below 1 hour. If the timer is already below 1 hour it will be increased to
1 hour. When Auto Sequence Test is enabled again, and no modules are in trip,
alarm, or test, this limit on the timer will no longer be in effect.
Configuration and initiation of the Auto Sequence Test can only be performed on
Module A.
User-defined Test
Each module supports three user-defined test latches in the configurable logic. These
latches allow the users to configure custom test routines as needed to test their system.
These user-defined tests are intended to support automated tests of such
systems as trip manifolds, parameter monitoring functions, or other user-specific
systems. The associated logic may be simple or complex depending on the
nature of the system to be tested.
These tests may include tripping a single module and checking the performance
of a single channel in a trip manifold using the trip cycle time monitoring
functions, and then resetting the module.
All the test logic must be programmed with the configurable logic. The User-defined
Test latches are intended to initiate the tests, to provide the handshaking between
modules, and to signify and manage the end of the test including an aborted test.
The logic behind the User-defined Test must be validated by the user
for all possible modes of operation including normal test, test
failure(s), or test abort.
