Honeywell FS20X Series User Manual page 17

FS20X Fire and Flame Detectors
DIP Switch SW2
Figure 25� Eight-position DIP switch SW2
SW2 Configuration
Default settings are highlighted in grey.
Alarm Relay SW2-1
Latching on
Non-latching off
Sensitivity Levels¹ SW2-2 SW2-3
Very High (4) on on
High (3) on off
Medium (2) off off off on
Low (1)* off off
*The low sensitivity range is not compliant
with the requirements of EN 54-10:2002.
Auxiliary Relay SW2-4 SW2-5
on on
No Verify Time
on
5 Sec. Verify Time off off
10 Sec. Verify Time off on
Factory Use Only
20 Sec. Verify Time off off
¹ Tested using a one square foot n-heptane pan re at the following distances:
Very High = 200 feet High = 150 feet
Medium = 100 feet Low = 50 feet
SW2
ON
OFF
1 2 3 4 5 6 7 8
Fault Relay SW2-8
Energized on
De-energized** off
**If the fault relay is de-energized,
the detector will not report loss
of power faults.
Alarm Relay SW2-7
SW2-6
Energized on
off De-energized off
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FS20X Fire and Flame Detectors
Rotary Switch SW3
Figure 26� Ten-position rotary switch SW3�
The detector has a variety of analog and RS-485 digital communication options� Analog and digital
outputs are available in addition to relay outputs� Select from two analog outputs or two digital outputs
using the ten-position rotary switch SW3� When '4-20mA sink' or '4-20mA source' are selected, the default
RS-485 protocol is FireBusII� 4-20mA Source is only available when position 1 is selected on SW3 (rotary
switch)� If position 2 (Modbus) or position 4 (FirebusII), the 4-20mA current sourcing output is inhibited�
FireBusII (position 4) is the default setting (highlighted in grey in the table below)� Use
table to configure SW3:
SW3 Configuration
Position Output Selection
0 4-20 mA sink
1 4-20 mA source
2 RS-485 Modbus
3 Factory use only
4 RS-485 FireBusII
5 Factory use only
6 Factory use only
7 Factory use only
8 Factory use only
9 Factory use only
Figure 26 and this
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