ProTechTPS Total Protection System
Manual 26710V1
78
Woodward
These tests share some of the same properties as the built in test routines. A test
cannot be initiated if any other module is tripped, in alarm or any other test
routine is active depending on the test mode permissive. User-defined tests can
be initiated from the front panel (with password), via Modbus (with confirmation),
or through configurable logic (which allows connection to any Boolean value
including Discrete Inputs).
An alarm is associated with each test. Also, there is a Timeout feature associated
with each User-defined Test that prevents an operator from “forgetting” to disable
this test. The timeout can be configured from 0 to 30 minutes (1800 seconds)
with 1 second resolution. When the test is enabled, the timer starts—if it reaches
the timeout value, the test is automatically reset. The test can be reset from
configurable logic, the front panel, or via Modbus.
Alarm, Trip, and Event Latches
The ProTechTPS provides pre-defined, user-configurable and user-defined
alarms and trips. This makes it easy to utilize common functions but allows great
flexibility to customize the ProTechTPS to meet a user’s specific needs. The fully
configurable Event latch makes it possible to record additional information such
as test results or to provide more detail on alarm or trip events.
Reset Function
The Reset Function is associated with all of the following latches. A Reset can be
generated by pressing the reset key on the front panel, from the pre-defined
reset contact input, via Modbus, or from a user-defined “Configurable Reset
Source”.
It is possible to configure one Discrete Input to function as a Resettable Trip input
where the Reset Function will clear the associated trip even if the contact is still
open. This is used in cases where the ProTechTPS trip must be cleared to reset
a trip system which feeds back a trip status that trips the ProTechTPS.
Alarm Latch
An "alarm" refers to an action of the ProTechTPS module to bring some condition
to the attention to the user. When any of the Alarm Latch inputs becomes true,
the output of the alarm latch is set TRUE and the yellow ALARM light is
illuminated on the front panel. By default, the Configurable Relay #1 is connected
to the Alarm latch (but this can be changed with the Programming and
Configuration Tool (PCT) software). Each Alarm Input is individually latched, and
those latched outputs are available on Modbus. The individual latches are reset
by the trip reset function if the input is false. The alarm latch output remains
TRUE until the reset function occurs and all inputs are false.
Here is the complete list of possible Alarm Latch inputs:
Internal Fault Alarm
Configuration Mismatch (if configured)
Power Supply 1 Fault (if configured)
Power Supply 2 Fault (if configured)
Speed Fail Alarm (if configured and speed input is used)
Speed Lost Alarm (if configured and speed input is used)
MPU Open Wire Alarm (if speed redundancy manager is used and speed
input is Passive)