COMMISSIONING
44
Notes:
1) (*) When switch 1-1 is turned off (default) then DIP switches 2 to 8 are ignored
and all detector settings must be made using the PC configuration tool. If switch
1-1 is on, then the primary options are set by the DIP switches and can be
supplemented by advanced options set using the PC configuration tool.
2) For detectors with V1.001 software, when the DIP switches are active the action
of switch 5, Alarm Latching, is inverted (Off = Alarm Latching Disabled, On =
Alarm latching enabled).
3) The detector is supplied with the default configuration shown in Table 2.
7.2.3
4-20mA MODE SWITCH (SW2)
The 4-20mA output can operate in either a source or sink mode. This is selected on switch SW2,
see Fig. 28.
Switch
Function
Action
Off (Default)
On
1-1
Remote Configuration(*)
Ignore DIP switch settings
(Use programmed settings)
Use DIP switch settings
1-2
Alarm Delay
Refer to Table 3 Delay Options
1-3
1-4
Reserved
Set in Off position
1-5
Alarm Latching
Latching
Non-Latching
1-6
Fault Latching
Non-Latching
Latching
1-7
Window Heater
Off
On
1-8
OPM Man/Auto
Automatic
Manual
Table. 2
Configuration DIP Switches
SW
1-2
SW
1-3
Delay
Description
Alarm / Prealarm
ON condition
Alarm / Prealarm
OFF condition
Off
On
SHORT
1.5 seconds over threshold
in any 4 second period
10 seconds under
threshold
Off
Off
MEDIUM (Default)
4.5 seconds over threshold
in any 8 second period
10 seconds under
threshold
On
Off
LONG
9 seconds over threshold
in any 12 second period
12 seconds under
threshold
On
On
EXTRA LONG
12 seconds over threshold
in any 15 second period
15 seconds under
threshold
Table. 3
Delay Options
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