NORMAL OPERATION
Touchpoint Pro
Pt. No. 2400M2566_1_EN
28
Operating Manual
5.4
TPPR Safety Function
During normal Day-to-Day operation:
•
The TPPR system will collect data every 250 ms from all of the
Input/Output
modules on the
Ring Network
•
The
Cause and Effect
matrix will be evaluated every 250 ms, and commands sent accordingly to the appropriate
output channels. System response time for AIM is ≤3 s and ≤1 s for DIM
•
Any change in status of an I/O channel will be reported to the
User Interface
and logged in the
event history
•
Any occurrence of any of the events listed in
Chapter 11
will be reported on the User Interface and logged in the
event history
•
Any system fault or inhibit will activate the
System Fault
relay
•
Any failure of the safety function e.g. due to major fault or power loss will activate the
System Failure
relay
5.5
Touchscreen Operation
During normal operation the Touchscreen should show a menu bar at the top and a green tick on the main screen below it.
During active events the status changes and an alarm may sound.
Users may touch the screen to show further menus or descriptions (some menus require password access).
A table of icons is given at
Chapter 17
.
5.5.1
System Status Screen Alert Icons
The
System Status
screen provides a summary of the TPPR status using
Alert Icons
accompanied by the text in bold:
System OK
All input and output
channels are Normal
Fault
One or more channels are
in Fault
Alarm
One or more input channels
are in Alarm
Inhibit
One or more channels are
in Inhibit
Warning
One or more Warnings are
active
Table 8.
System Alert Icons
WARNING
High ‘off-scale’ readings may indicate an explosive concentration.
AVERTISSEMENT
Des résultats dépassant considérablement l’échelle peuvent être indicateurs d’une
concentration explosive.