TSA-200 / TSA-200XT / TSA-240 / TSA-240XT
© 2010 –
2014 Telefire Fire & Gas Detectors Ltd
Revision 1.06 July 2014
Page 53 of 79
15
Operating Instructions
15.1
Default Operation
If the ECD is in the quiescent state, the Manual/Automatic operation is set to the
Automatic & Manual mode, then triggers from detectors, MCP or the Manual Release
inputs cause an Alarm state.If the extinguishing conditions are met, the CP starts the
extinguishing process according to the programmed configuration and timing
parameters. If the process is not interrupted by the Inhibit (Hold/Abort) input, the
extinguishant is released.
15.2
Manual Only
It is sometimes necessary to prevent the extinguishing process from being automatically
triggered by the detection zones. For example, this is required when welding is being
performed in the detection zone.
In such a case, select the "Manual Only" mode of operation using the Keyboard switch.
In The Manual Only mode, ONLY Manual activation will cause the CP to enter the
Activated state and proceed to extinguishing (i.e. alarms from detectors in zones will not
cause the CP to enter the Pre discharge warning time and/or the Activated state).
This state is indicated by the "Manual Only" LED in the Extinguishing Zone display.
DO NOT FORGET TO SWITCH BACK TO THE "AUTOMATIC & MANUAL" STATE
WHEN THE MANUAL ONLY MODE IS NO LONGER REQUIRED.
15.3
Manual Activation
Pressing the Manual Release push button switch causes the CP to enter the Activated
condition, with all its indications and outputs activated. In the default case, the Manual
Activation Delay is zero, and this will cause an immediate activation of the extinguisher
and the ECD enters the extinguishing pulse period (and also the "Released" state). If the
programmed delay is not zero, the ECD enters the Pre Discharge Warning Time at the
end of which, if not halted by Hold/Abort, the extinguisher is triggered, and the CP starts
the extinguishing pulse duration period.
Manual Triggering switches the Manual Trigger LED ON, while the zone alarm LEDs
remain in their state prior to manual triggering
i
Note
If the CP is in the Pre Discharge Warning Time caused by detection zones
triggers, and then the Manual Trigger (PB) is activated, the extinguisher is
released immediately, regardless of the programmed delay of zones, or the
programmed delay of the Manual Trigger.
15.4
Alarm Delay
The TSA-200 product family can be programmed for Delayed or Non Delayed Alarm, as
part of the Alarm Delay and Confirmation process. (Alarm Verification)
In the default configuration the alarm delay is OFF (Zero Delay), and it can be changed
to 30 seconds using the keyboard.
See "
Dependency on more than one Alarm Signal"
(Alarm Verification Function, AVF)
page 3.
