Ma Loop Status - Honeywell SEARCHLINE EXCEL PLUS Technical Manual

52 Chapter 8 Operation and Configuration
Operation with
Colour
Bluetooth connected
Fault Yellow flashing
Inhibit Yellow steady
Warning (connecting) Blue flashing with
yellow alternating
Warning (connected) Blue steady with
yellow alternating
Blue flashing
Normal (connecting)
Blue flashing
Blue steady
Normal (connected)
Blue flashing
Alarm Red flashing
Over-range Red flashing
Notes:
Color text encodings in the table represent: R=Red, G=Green, B=Blue, Y=Yellow, K=OFF
1)
Pattern is defined as repeating: Green for 166ms then OFF for 19s
2)
3) Pattern is defined as continuous OFF
Pattern is defined as repeating pattern (400ms Blue, 800ms OFF, 400ms Blue, 800ms OFF) followed by 5s OFF period
4)
between repeats
Pattern is defined as repeating pattern (6*400ms Blue) followed by 5s OFF period between repeats
5)
The Default, Optional 1 and Optional 2 Configuration Set correspond to the LEDPatternSet parameter as described in
Sec. 8.6.1 Parameters.
8.2.2 mA Loop Status
Searchline Excel Plus & Searchline Excel Edge are equipped with a 4–20 mA loop output which can operate in
source or sink mode. Source and sink modes are configured by wiring. For more information see the wiring diagram in
the Electrical Installation chapter. This output is a safety-related output and is compatible for use in SIL 2 applications.
Normal operation and alarm conditions are indicated between 4 to 20 mA, depending on configuration.
The mA Loop offers two modes of operations:
1. Proportional to the detected gas concentration.
2. Discrete, where the output will switch between distinct levels, based on detector status.
Fault and Inhibit indications are signalled with values lower than 4 mA, Over-range indications are signalled with value
higher than 20 mA. Output levels of the 4-20 mA loop are configurable,
Config. Set
Default;
Optional 1;
Optional 2
Default;
Optional 1;
Optional 2
Default;
Optional 1;
Optional 2
Default;
Optional 1;
Optional 2
Default
Optional 1;
Optional 2
Default
Optional 1;
Optional 2
Default;
Optional 1;
Optional 2
Default;
Optional 1;
Optional 2
Searchline Excel™ Plus / Searchline Excel™ Edge – Technical Manual
Time Sequence (2.4 sec)
1 2 3
(400ms) (400ms) (400ms)
Y Y K
Y Y Y
B K K
B B B
B K K
B Special
4
B B B
R R K
R R R
4 5
(400ms) (400ms)
K K
Y Y
B K
B B
B K
B K
B B
Special
5
K K
K K
6
(400ms)
K
Y
Y
Y
K
K
B
K
K