Detector Mode Setup
TM 787100 Rev (Af), May 2019
29
Table 10: Detector State with Output Signals
Detector
State
Color
LED
Flashing
LED
Alarm
Relay
Fault
Relay
4
–
20mA
Output
Normal
Green
1Hz
Off
On
5mA
Warning
Red
2Hz
Off
On
10mA
Alarm
(1)
Red
Steady
On
On
15mA
Latch
(2)
Red
Steady
On
On
15mA
BIT Fault
(3)
Yellow
4Hz
Off
Off
2mA
Warning at
BIT Fault
Red
2Hz
Off
Off
10mA
Alarm at BIT
Fault
Red
Steady
On
Off
15mA
Fault
Yellow
4Hz
Off
Off
0mA
Notes:
(1)
The alarm outputs are activated as long as the alarm conditions are present.
(2)
The alarm state can be latched (optional) according to programmable function.
(3)
The detector is in its BIT fault state until it has passed a successful BIT and stops
approximately 3 seconds after the fire is no longer detected.
4.2.1
Optional Latching
The detector has an optional latched alarm output capability, which operates
according to the programmable function. If selected, upon detection of a
fire, the detection signal is latched until manually reset by disconnecting the
power supply, latching or performing a manual BIT. Latching affects the
alarm relay, 4
–
20mA output, and the alarm LED.
4.2.2
Built-In-Test
When the programmable function alarm BIT at YES is successful, the
manual BIT activates the alarm relay for 3sec and the 4
–
20mA output
provides 15mA for 3 sec.
4.3
Detector Mode Setup
4.3.1
Detector Setting
on page
31 for default factory settings.
The detector incorporates several functions that can be set by the customer
using SPECTREX host software, which is supplied with each detector
shipment. Please refer to
Manual TM768050
for programming instructions.
The host software enables you to change functions as described in
on page 31.
