IFM Electronic efector300 SBU3 User manual

Operating instructions
Mechatronic flow sensor
SBU3
706020/00 03/2011
UK

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1 Safety instructions
• Please read the product description prior to set-up of the unit. Ensure that the
product is suitable for your application without any restrictions.
• Improper or non-intended use may lead to malfunctions of the unit or to unwan-
ted effects in your application. That is why installation, electrical connection,
set-up, operation and maintenance of the unit must be carried out by qualified
personnel authorised by the plant operator.
• Check the compatibility of the product materials (see technical data) with the
media to be monitored in all applications.
• The device shall be supplied from an isolating transformer having a secondary
Listed fuse rated either
a) max 5 amps for voltages 0~20 V (0~28.3 Vpeak), or
b) 100/Vp for voltages of 20~30 V (28.3~42.4 Vpeak).
• Flow Operated Switches shall be connected only by using any R/C (CYJV2)
cord, having suitable ratings.
Contents
1 Safety instructions ...............................................................................................2
2 Functions and features ........................................................................................3
3 Installation............................................................................................................3
4 Electrical connection............................................................................................4
5 Switch point setting..............................................................................................4
5.1 Definition of requested value .........................................................................5
5.2 Adjustment to existing flow ............................................................................5
6 Operation.............................................................................................................6
7 Maintenance, repair and disposal........................................................................6
8 Scale drawing ......................................................................................................7
9 Technical data .....................................................................................................8

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2 Functions and features
The unit monitors liquid media.
It detects the volumetric flow quantity to the principle of differential pressure and
switches the output:
• Outputclosed(LED=ON),ifvolumetricflowquantity≥switchpoint.
• Output open (LED = OFF), if volumetric flow quantity < switch point.
The switch point is adjustable.
3 Installation
►Ensure that the system is free of pressure during installation.
►Ensure that no media can leak at the mounting location during installa-
tion.
The unit provides 5 connections for pipe thread G½.
• 1: Connection for additional sensor
• IN = inlet
• OUT1 to OUT3: 3 x outlet for 3 different connection types
IN OUT1
G2
1
OUT2
G2
1
G2
1
G2
1
OUT3
G2
1
The cover plugs are only loosely screwed to the connections.
►Firmly tighten the cover plugs for unused connections. Tightening
torque: 70 Nm.

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4 Electrical connection
The unit must be connected by a qualified electrician.
The national and international regulations for the installation of electrical
equipment must be adhered to.
Voltage supply to EN 50178, SELV, PELV.
►Disconnect power.
►Connect the unit as follows:
3
1
4
2
L+
L-
1
3
4
For information about available sockets/connectors see:
www.ifm.com →Products→Accessories
5 Switch point setting
There are 2 possibilities:
• Definition of requested value →5.1.
• Adjustmenttoexistingflow→5.2.
1
5
L/min
D
C
B
A
1
5
L/min
1 2
A: LED; B: setting scale; C: lock nut; D: knurl
Do not turn the setting screw beyond the maximum value of the setting
range(→Technicaldata)toavoidfaultyswitching.

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5.1 Definition of requested value
►Loosen the lock nut.
►Turn the knurl until the requested value just becomes visible on the setting
scale.→Exampleinfigure2:requestedvalue=10l/min.
►Tighten the lock nut.
5.2 Adjustment to existing flow
►Let the normal flow circulate in the installation.
►Loosen the lock nut.
►Set the switch point with the knurl.
- If the LED lights before setting: turn the knurl in the direction [+] until the LED
goes out. Then turn in the opposite direction [-] until the LED lights.
- If the LED does not light before setting: turn the knurl in the direction [-] until
the LED lights.
►Tighten the lock nut.
Correlation between number of the turns of the knurl (SET) and switch point in l/
min (typical course of the measurement curves):
SET
SBU325
SBU324
SBU323
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0
10
20
30
40
50
Q [l/min]
60
70
80
90
100
The diagram shows the typical course of the measurement curves for coolants at 20 °C.

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6 Operation
After power on the unit is ready for operation. It detects the volumetric flow quanti-
ty and switches the output according to the setting.
Function diagram
t
Q
1
0
A
B
C
A = requested flow; B = switch point; C = switching output
7 Maintenance, repair and disposal
In case of correct use no maintenance and repair measures are necessary.
In case of strongly polluted media: mount a filter in front of the inlet (IN). Recom-
mendation: use a 50-micron filter.
Only the manufacturer is allowed to repair the unit.
After use dispose of the unit in an environmentally friendly way in accordance with
the applicable national regulations.

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8 Scale drawing
30
G
2
1
G
2
1
80
62
24
150...167
40
G
2
1
80
68
6
40
6,3
26

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9 Technical data
Setting range
- SBU323 [l/min] ....................................................................................................... 0.3...25
- SBU324 [l/min] ....................................................................................................... 0.3...50
- SBU325 [l/min] ....................................................................................................... 0.3...75
Operating voltage [V]....................................................................... 24 DC (-15 % / +10 %)
Current rating [mA] ......................................................................................................... 100
Protected against short circuits, reverse polarity and overload
Voltage drop [V].............................................................................................................< 2.5
Current consumption [mA]..............................................................................................< 15
Hysteresis
- SBU323 [l/min] ...................................................................................................... 0.1...1.0
- SBU324 [l/min] ...................................................................................................... 0.1...1.5
- SBU325 [l/min] ...................................................................................................... 0.2...2.0
Repeatability [% of value of measuring range]....................................................................1
Accuracy [% of value of measuring range].......................................................................± 5
Response time [s]........................................................................................................< 0.01
Materials (wetted parts).......................... stainless steel 316 / 1.4401; aluminium anodised;
PEEK; O-ring: FPM (Viton)
Housing materials....................................................................... aluminium anodised; steel
Protection ............................................................................................................... IP 67 III
Switching cycles min. ........................................................................................... 10 million
Medium temperature [°C] ........................................................................................... 0...60
Operating temperature [°C] ........................................................................................ 0...60
Pressure resistance [bar]................................................................................................ 200
Temperature changes affect the specified standard settings for coolants.
For oils, the settings are influenced by temperature and viscosity.
More information at www.ifm.com