Manual 26710V1
ProTechTPS Total Protection System
Woodward
81
The logs, except the Configuration Error Log, are stored in non-volatile memory
so loss of power to the ProTechTPS will not affect this information. The log
functions use scrolling buffers that keep the most recent data. The individual log
sizes are described in the following descriptions below. Logs can be cleared from
the front panel with the appropriate password. The Test Level Password is
needed to Reset All Logs except the Peak Speed/Acceleration Log. The Config
Level Password is required to Reset the Peak Speed/Acceleration Log.
Overspeed/Acceleration Log
Each module logs the time and date of the last 20 overspeed or over-
acceleration events, the speed and acceleration levels sensed upon issuing a
system trip command, and the related maximum speed and acceleration values
detected during the trip condition. This includes values generated by internal
simulation testing. If the trip occurred during testing, this will also be indicated in
the log.
Trip Log
Each module logs the last 50 trip events sensed. This log stores the trip
description, time and date of the event, “first out” trip indication, and indication if
the module was performing a test when the trip occurred. Pressing the TRIPPED
VIEW button on the ProTechTPS’s front panel will display the Trip Log screen.
This screen displays the most recent TRIP event at the top of the list, and allows
users to scroll through all logged events.
Alarm Log
Each module logs the last 50 alarms sensed. This log stores the alarm
description, time and date of the event, and indication if the module was
performing a test when the trip occurred. Pressing the ALARM VIEW button on
the ProTechTPS’s front panel will display the Alarm Log screen. This screen
displays the most recent ALARM event at the top of the list, and allows users to
scroll through all logged events.
Trip Cycle Time Log
If Trip Cycle Time monitoring is configured, the module logs the trip cycle times
for the last 20 trips. Whenever a module trip occurs, two trip cycle time monitors
can be configured to monitor the milliseconds from the trip until a user-defined
Trip Indicator Input is true. The Trip indicator could be configured to be a limit
switch which indicates a trip valve has closed, or a pressure comparison that
indicates that the system or part of the trip system has actuated. The Trip Cycle
Time Monitors are designed to monitor the performance of the trip system and
detect any degradation of its response time to warn the user before a potentially
dangerous condition exists.
The Maximum Cycle Time for each event can be specified as 1 to 60 000 ms. If
this time is exceeded, an alarm will be generated. If the event has not occurred in
10x this maximum cycle time (up to a maximum of 60 seconds), then the trip
cycle time will be set to 60 seconds.