Festo SFAM-62-***-T User manual

en Operating
instructions
8078141
2017-09c
[8068109]
Flow Sensor
SFAM

SFAM
2Festo – SFAM – 2017-09c
Original instructions
SFAM-EN
Identification of hazards and instructions on how to prevent them:
Danger
Immediate dangers which can lead to death or serious injuries
Warning
Hazards that can cause death or serious injuries
Caution
Hazards that can cause minor injuries
Other symbols:
Note
Material damage or loss of function
Recommendations, tips, references to other documentation
Essential or useful accessories
Information on environmentally sound usage
Text designations:
 Activities that may be carried out in any order
1. Activities that should be carried out in the order stated
– General lists
èResult of an action/References to more detailed information

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English – Flow Sensor SFAM
Table of contents
1 Product description 5.......................................................
1.1 Overview 5................................................................
1.2 Characteristics 6...........................................................
1.3 Factory settings 7...........................................................
2 Function and application 7...................................................
2.1 Operating statuses 8........................................................
2.2 Function range 9...........................................................
2.2.1 Switching outputs 9................................................
2.2.2 Change in colour 10..................................................
2.2.3 Standard conditions 10...............................................
2.2.4 Analogue filter 11...................................................
2.2.5 Digital filter 11......................................................
2.2.6 Security code 11....................................................
2.2.7 Min/max values 11..................................................
3 Requirements for product use 12...............................................
4 Installation 13..............................................................
4.1 Mechanical/pneumatic installation 13...........................................
4.2 Electrical connection 14.......................................................
5 Commissioning 15...........................................................
5.1 Symbols on the display 15.....................................................
5.2 Symbols for representing the menu structure 16...................................
5.3 RUN mode 17...............................................................
5.4 INFO/SHOW mode 18........................................................
5.5 EDIT mode 20...............................................................
5.5.1 Start EDIT mode 20..................................................
5.5.2 Setting the switching characteristics of the switching outputs 21.............
5.5.3 Set special menu [SPEC] 22............................................
5.6 TEACH mode 24.............................................................
5.7 RECORDER mode 25.........................................................

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6 Operation 26...............................................................
7 Maintenance and care 26.....................................................
8 Disassembly 27.............................................................
9 Fault clearance 27...........................................................
10 Accessories 27..............................................................
11 Technical data 28............................................................

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1 Product description
For all available product documentation èwww.festo.com/pk
1.1 Overview
6
SFAM-62- … -M
1
2
3
4
5
7
SFAM-62- … -T
5
6
8
6
SFAM-90- … -M
1
2
3
4
5
7
SFAM-90- … -T
5
6
8
1Display
2B pushbutton
3Edit button
4A pushbutton
5Plug for electrical connection
6Supply port
7Laminar flow cartridge
8Stabilizing zone
Fig. 1 Operating elements and ports

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1.2 Characteristics
Feature Order
code
Specification
Type SFAM Flow sensor
Grid dimension -62 62 mm
-90 90 mm
Flow measuring range -10001) Max. 1000 l/min
-30001) Max. 3000 l/min
-5000 Max. 5000 l/min
-100002) Max. 10000 l/min
-150002) Max. 15000 l/min
Flow input LUnidirectional from left
RUnidirectional from right
Type of mounting -M Manifold assembly
-T Threaded mounting
-W1) Threaded mounting with wall fastener
Pneumatic connection G121) G½
N121) ½” NPT
G12) G1
N12) 1” NPT
G1122) G1½
N1122) 1½” NPT
Electrical output -2SA 2x PNP or NPN, 1 analogue output 4 … 20 mA
-2SV 2x PNP or NPN, 1 analogue output 0 … 10 mA
Electrical connection -M12 Plug connector; M12x1, 5-pin; A-coded
Electrical accessories3) -2.5S Connecting cable, straight socket, cable length 2.5 m
-5S Connecting cable, straight socket, cable length 5 m
-2.5A Connecting cable, angled plug socket, cable length 2.5 m
-5 A Connecting cable, angled plug socket, cable length 5 m
1) Only SFAM-62
2) Only SFAM-90
3) Included in the scope of delivery.
Tab. 1 Overview of variants

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1.3 Factory settings
Settings Menu item Value/function
[SPEC]
Standard conditions [Option] OFF (=DIN 1343)
Physical unit for flow rate [FLW] l/min
Filter time constant [AnA.F] A.60
Digital filter [diG.F] d.2
Physical unit for consumption [ConS] l
Switching output PnP
Security code [lock] OFF
[OutA]
Measured variable FLW (flow rate)
Switching function [Threshold value comparator]
Switching point [SP] 40 % FS
Hysteresis [Hy] 2 % FS
Switching element functions NO (normally open contact)
Consumption switching impulse [Ci] 30 l at FS = 1000 l/min
100 l at FS = 3000 l/min
150 l at FS = 5000 l/min
300 l at FS = 10000 l/min
500 l at FS = 15000 l/min
[OutB]
Switching function [Threshold value comparator]
Switching point [SP] 60 % FS
Hysteresis [Hy] 2 % FS
Switching element function NO (normally open contact)
Change in colour of display Blue (function deactivated)
Tab. 2 Factory settings
2 Function and application
The SFAM is designed to monitor changes in the flow rate and air consumption/air volume for suitable
media in piping systems or terminals in industry; for suitable media èChapter 11 Technical data.
Thedesign enables stand-alone operation of (SFAM-…-T) or assembly with service units of the MS
series (SFAM-…-M).
Measurement is carried out by means of a thermal procedure. Here, the amount of heat drawn from
aheated surface of the sensor by the medium flowing past it is calculated. Through the amount of heat
removed, the flow rate or accumulated air consumption is determined and shown on the display. The
connection to higher-level systems is implemented through 2 binary outputs (Out A/B) and one
analogue output (Out C). The switching points for both binary outputs are adjustable for flow rate
measurement. To measure air consumption, a consumption switching impulse is adjustable for output

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A (Out A). The combination of air consumption measurement (Out A) and flow rate measurement
(Out B) is possible. The flow rate value is passed on via the analogue output (Out C).
2.1 Operating statuses
INFO mode EDIT mode TEACH mode RECORDER mode
SHOW mode
Fig. 2 SFAM operating statuses
RUN mode
In the RUN mode, the following are displayed:
– the measurement values for the flow rate (in l/min or scfm)
– the measurement values for air consumption (in m³, scf or l) and
– the signal statuses of the switching outputs Out A, Out B (set, not set).
INFO mode
In INFO mode, when air consumption measurement is active, the display of input variables (flow rate,
air consumption) can be switched quickly in the display. The display can be switched by pressing the
Apushbutton or B pushbutton.
SHOW mode
In SHOW mode, the current settings for the switching outputs Out A and Out B, as well as the
min/maxvalues for the flow rate or air consumption measurement, are displayed. The min/max values
can be reset.
EDIT mode
In EDIT mode, the settings for the flow sensor (switching outputs, standard condition, physical unit,
etc.) can be made or changed.
TEACH mode
In TEACH mode, the switching points can be taught.

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RECORDER mode
In the RECORDER mode, a manual air consumption measurement can be performed.
2.2 Function range
2.2.1 Switching outputs
Configuration of the switching outputs
Switching output Out A:
This can be done either with the physical input variable flow rate [FLW] or the air consumption
measurement [ConS] derived from it.
Switching output Out B:
can only be used with the physical input variable flow rate.
Switching outputs Out A/Out B can be configured according to the setting range in the technical data
èTab. 13.
For the switching output Out A and Out B, the switching function threshold value or window comparator
can be selected independently of one another. Each switching output can have the switching element
function N/C contact (NC – normally closed) or N/O contact (NO – normally open) separately allocated
toit èTab. 3.
Switching points [SP] and hysteresis [HY] can be set corresponding to the setting ranges in the
technical data table èTab. 13.
Switching point and hysteresis with flow rate measurement for Out A/Out B
Threshold value comparator Window comparator
Switching element function NO (normally open contact)
q
1
0
HY
OUT
SP [l/min.]
HY HY
q
1
0
OUT
SP Lo SP Hi
[l/min.]
Switching element function NC (normally closed contact)
q
1
0
SP
HY
OUT
[l/min.] q
1
0
OUT
SP Lo SPHi
HY HY
[l/min.]
Tab. 3 Switching point SP and hysteresis Hy setting

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Consumption switching impulse [CI] with air consumption measurement
Setting NO (normally open) Setting NC (normally closed)
CI CI
t
t
0
Out A
1
0
CI
100 ms
[l],
[m³]
CI CI
t
t
0
Out A
1
0
CI
100 ms
[l],
[m³]
Tab. 4 Consumption switching impulse
A threshold value for air consumption can be set with the consumption switching impulse [CI]. If the set
threshold value is reached, a switching impulse is emitted at the output Out A for 100 ms. With each
switching impulse, measurement of the air consumption is started again.
2.2.2 Change in colour
A red colour change can be set for Out B, dependent on the switching status. This allows the system
status to be seen across large distances.
The following settings can be chosen:
r.On = Display is red when the switching output is High (1).
Display is blue if the switching output is Low (0).
r.OFF = Display is red when the switching output is Low (0).
Display is blue if the switching output is High (1).
bLUE = Display is always blue; the colour change function is switched off.
2.2.3 Standard conditions
The air mass flow measured and output by the SFAM refers to standard conditions. The SFAM is
calibrated at the factory to the physical standard conditions in accordance with DIN 1343 and the unit
l/min.
Note
If standard conditions and/or other units that deviate from the calibrated measurement
range with the unit l/min are used, there are corresponding characteristiclimits for the
analogue output èTab. 16 in Chapter 11 Technical data.