Operation; Output Signals; Table 4: Output Signals - GasTech F-GUARD UVIR User Manual

4

Operation

On power-up, the LED on the front of the detector flashes Yellow indicating the startup routine has begun.
After approximately 30 seconds, if the startup is successful, the LED turns green, the 0-20mA output goes to
4mA and the fault relay is closed.
Detector configuration settings can be changed as described in section 2.7.
To restart the detector, turn it off and then turn on the power.
4.1

Output Signals

The detector has the following output signals:
Current output (0–20mA) with HART® 7

Relays (Fault, Auxiliary and Alarm)

RS-485

Tri-color LED

Output
Startup
Fault
BIT Fault
Dirty Window Warning
Normal
IR Radiation detected
UV Radiation detected
Pre Alarm
Fire Alarm
1 – 3mA when "Enable dirty window warning 0-20mA" enabled. 4mA when "Enable dirty window warning 0-20mA" disabled.
2– Closed when "Aux Relay" set to "Dirty Window Warning".
3– Closed when "Aux Relay" set to "IR Detected".
4– Closed when "Aux Relay" set to "UV Detected".
5 – 16mA when "Enable Pre-Alarm 0-20mA" enabled. 4mA when "Enable Pre-Alarm 0-20mA" disabled.
6– Closed when "Aux Relay" set to "pre-alarm".
For more information & Technical support:
F-Guard UV-IR User Manual
T 4: O
ABLE UTPUT
State
0 – 20mA Fault Relay
1mA
1mA
2mA
3mA ( )
1
4mA
8mA
12mA
16mA ( )
5
20mA
info@gastech.com and support@fg-detection.com
Doc. No. F110V0020.06
S
IGNALS
Alarm Relay
(NC) NO
Open Open
Open Open
Open Open
Closed Open
Closed Open
Closed Open
Closed Open
Closed Open
Closed Closed
Aux Relay LED
(NO
Open Flashing
Yellow
Open Flashing
Yellow
Open Yellow
Closed ( ) Green
2
Open Green
Closed ( ) Green
3
Closed ( ) Green
4
Closed ( ) Flashing red
6
Closed Red
25