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D-555-3-E
8.2.3 About Alarm Outputs
• Whenever the instantaneous flowrate exceeds (or falls below) the alarm setpoint, the front panel LED comes
on with a remote alarm signal (open collector) produced.
• The alarm comes in two points - alarm 1 and alarm 2 - independently set up.
NOTE: About available alarm-related parameters, see Table 8.4 "Menu Trees and Switch Operation" on
page 24.
Table 8.2 Alarm-related Parameters and Meanings
Parameter Code
Name
Description
Ad
□□□□□
Alarm 1 setup
Sets up alarm flowrate of alarm output 1 (in hourly flowrate)
AH
□□□□□
Alarm 1 hysteresis
Sets up hysteresis of alarm output 1 (in hourly flowrate)
Width from alarm setpoint to the point where alarm is lifted.
AS
△○
Alarm 1 status
Output status of alarm 1
r
: Sets up high alarm or low alarm.
"H" set up
→
Hi alarm (alarm activated above the setpoint)
"L" set up
→
Lo alarm (alarm activated below the setpoint)
○
: Remote output status when alarm is activated.
"S" set up
→
ON
"O" set up
→
OFF
Ad
□□□□□
Alarm 2 setup
Flowrate of alarm out 2 (Description remains the same as A1d.)
AH
□□□□□
Alarm 2 hysteresis
Hysteresis of alarm out 2 (Description remains the same as A1H.)
AS
△○
Alarm 2 status
Output status of alarm out 2 (Description remains the same as A1S.)
Example:
A1d=500, A1H=5, A1S=LS, A2d=1000, A2H=10, A2S=H0
OFF
OFF
OFF
OFF
ON
ON
(OFF)
(ON)
(ON)
Alarm 1
activated
Alarm 2
activated
A1d=500
A2d=1000
A1H=5
A2H=10
Instant. flowrate
(ON)
(OFF)
(OFF)
Alarm 2 LED
Alarm 1 LED
Alarm output 2
(transistor status)
Alarm output 1
(transistor status)
Содержание Delta Flowpet FLX B Series
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