Setting Example; Monitoring Of Limit Values And Differential Pressure - IFM Electronic ecomat200 DL2003 Notice D'utilisation

AL-3
MONITOR

9. Setting example

Monitoring of limit values and differential pressure

(see also principle comparator mode, page 25)
Application
Monitoring of a filter system by recording the measured pressure values before and behind the filter.
System requirements
Max. possible system pressure
Operating pressure (nominal pressure)
Min. permissible operating pressure
Measuring range of the sensors/transmitters
Analogue output of the sensors/transmitters
The measuring ranges and output signals
of the sensors/transmitters have to be identical!
Monitor parameters
MOD Mode
INx Input (type)
DHI Display High
DLO Display Low
FO1 Function Output 1
FO2 Function Output 2
SP1 Switch point Output 1
SP2 Switch point Output 2
HY1/2 Hysteresis for SP1/2
AO3 Analogue Output 3 (type)
AE3 Analogue End Output 3
AS3 Analogue Start Output 3
Output characteristics (OUT1...3)
38
Example values
0...25 bar
4...20 mA
Setting (value)
= measured value A (e.g. constant)
= measured value B (e.g. variable)
21 bar
20 bar
5 bar
Description
A-B Differential monitoring [∆ bar]
4-20 Analogue outputs of the sensors/transmitters
25 Max. measured value of the sensor/transmitter
0 Min. measured value of the sensor/transmitter
(4) Relay 1 de-energises when current value is above SP1
(switches back at SP1 – HY1)
(4) Relay 2 de-energises when current value is above SP1
(switches back at SP2 – HY2)
Differential pressure ∆ bar 1 (limit value 1)
5
Differential pressure ∆ bar 2 (limit value 2)
15
10 Reset point [% of SPx]
0...20 mA signal for ∆ bar evaluation
0-20
21 Max. possible differential pressure (∆ bar
0 Min. possible differential pressure (∆ bar
filter system
)
max
)
min