3600I
Page: 14
1.5.6.1 OPTIONAL
LATCHING
Alarms are set as non-latching by default. However, the detector includes a latched
alarm output capability, which operates according to the programmed function.
If selected, upon detection of a fire, the detection signal is latched until a manual reset
is performed (disconnecting the power supply or performing a manual BIT (see
Manual
BIT
on page 16).
Latching affects the Alarm Relay, 0-20mA output, the Alarm LED (the Auxiliary Relay
will be latched only when the programmable function
Auxiliary Relay
is set to
YES
.
Notes:
•
The Auxiliary Relay is available only in Model 3600I – 4XXXX and 5XXXX
•
The 0-20mA is available only in Model 3600I – 1XXXX, 2XXXX, 3XXXX
1.5.7
AUXILIARY RELAY AS END-OF-LINE RESISTOR
The Auxiliary Relay can be used as End-of-Line (EOL) resistance in Model 3600I-
4XXXX, and 5XXXX only. In this case, the Auxiliary Relay is active as long as the
detector is not in Fault state.
1.6
INTERNAL DETECTOR TESTS
The detector performs two types of self tests:
•
Continuous Feature Test, page 14
•
Built-In-Test (BIT), page 15
1.6.1
CONTINUOUS FEATURE TEST
During normal operation, the detector tests itself continuously and indicates a fault if a
failure is found. This type of test complies with SIL-2 requirements.
The detector continuously tests:
•
Input voltage level
•
All internal regulator voltage level
•
Voltage level status of sensor and sensor circuitry for noise or disconnection in the
electronic circuitry
•
0-20mA level output
•
Relays and heater operation
•
Processor Watch dog
•
Software
•
Memory
•
Oscillator
frequency
Содержание 3600I
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