TSA-1000
© 2008
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2012 Telefire Fire & Gas Detectors Ltd
Revision 1.12
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sequence, until the faulty output is isolated. All appropriate "good" outputs are then
switched back ON, except for the faulty outputs.
The controlled outputs (i.e. not relays' contacts or OC outputs) are continuously
monitored.
Recovery from faults is detected by the CPU and all relevant recovered outputs are
reactivated, if necessary.
Open Collector outputs are current limited by design, by series connected high value
resistors.
i
Note
Relays' contacts are not monitored, supervised or protected.
Connect external protective circuitry to the relays' contacts circuitry.
Figure 1 TSA-1000 typical system