Consumption switch impulse [CI] with accumulated air consumption
measurement
Setting NO (normally open closer)
Setting NC (normally closed opener)
CI
CI
t
t
0
OUTA
1
0
CI
100ms
[l], [m´]
CI
CI
t
t
0
OUTA
1
0
CI
100ms
[l], [m´]
Fig.10
A threshold value for air consumption can be set with the consumption switch
impulse [CI]. If the set threshold value is reached, a switch impulse is emitted at
the output Out A for 100 ms. With each switch impulse, measurement of the air
consumption is started again.
Symbols on the display
Symbols
Description
Out A/Out B
Switching output A / switching output B
Lock
Security code is active (locked against unauthorized programming)
Run
Accumulated air consumption measurement is active in the Recorder mode
Option
The sensor is set to a standard condition that differs from the factory setting
è
chapter 5.4, Setting standard condition section
Stop
Reset accumulated air consumption measurement value
Switching output set/not set
Threshold comparator
Window comparator
Air consumption switching mode (consumption only for Out A)
Impulse for accumulated air consumption (consumption impulse)
Switching point
Lower switching point
Upper switching point
Hysteresis
Normally open contact
Normally closed contact
Switching mode flow (flow only with Out A)
Minimum flow (flow low)
Maximum flow (flow high)
Special menu
Analogue filter
Digital filter
Display red with switching status ON or logical 1
Display red with switching status OFF or logical 0
Output plus switch
Output zero switch
Segments light up: graphic display of the current measured value in relation
to the max. measured value of the measuring range.
Running light (1 segment): Air consumption measurement for Out A or
RECORDER mode active
3 segments flashing: Hysteresis value is displayed
1 segment flashing:
Segment 6:
switching point SP or SP.Lo will be displayed
Segment 8:
switching point SP.Hi will be displayed
Segment 1:
min. flow (F.Lo) will be displayed
Segment 10:
max. flow (F.Hi) will be displayed
Fig.11
Preparing commissioning
In the base state, the product is in the RUN mode. The current measurement
values are displayed. The base state can be reached from other modes by:
pressing Edit button for 3 seconds or
passage of a monitoring time, timeout
1.
Switch on the operating voltage.
The SFAB is in the RUN mode.
2.
Check the settings of the SFAB
è
chapter 5.3 SHOW mode.
5.1 Icons for representing the menu structure
Icon
Meaning
Automatic return to the basic status (RUN mode) when the monitoring time
has expired (here 80 seconds)
In order to return to the basic status (RUN mode), press the Edit button for
3seconds
Create flow (for teaching the measured value here flow 1)
Symbol on the display flashes (here Out B)
Security code active (Lock blocked against unauthorised programming)
Security code inactive (Lock)
Press button (here A button)
Press A button or B button. Then the SFAB switches to the setting shown by
the arrows
Press A button and B button simultaneously
Press button (here A button) and Edit button simultaneously
Press A button or B button and thus set the desired value
Display for a value or switching point. Value can be set
Press the Edit button
Branched in the menu
Fig.12
5.2 RUN mode
In the RUN mode
the measurement values for flow (in l/min, scfm or l/h)
the measurement values for air consumption (in m´, scf or l) and
the signal states of the switch outputs Out A, Out B (set, not set) are displayed.
Note
A flashing value means:
measurement outside the permitted measuring range or
incorrectly connected hoses
è
chapter 4.2 Pneumatic connection
5.3 SHOW mode
In the SHOW mode, the current settings for the switching outputs Out A and Out B
are displayed.
The SFAB must be in the RUN mode.
· Pressing the A button (switching output Out A) or the B button (switching output
Out B) starts the SHOW mode for the respective switching output.
Note
If there are faults, pressing the A button / B button first displays corresponding
fault numbers.
· Repeated pressing of the A button/B button displays the settings of the
respective switching output one after another.
· When all settings have been displayed, the SFAB goes back into the RUN mode
when the A button/B button are pressed again and displays the current
measurement value for the corresponding output.
As a result, the displays can also be changed via the SHOW mode to switch
between the displayed measurement values, such as with a combination of air
consumption measurement and flow measurement.
