IFM Electronic SC0522 User manual

Installation Instructions
Flow monitor compact
SC0522
SC0523
SC0524
SC0525
SC0528
704928/01 03/2011
UK

2
1 Function and features
The flow monitor monitors liquid media. It senses whether there is a preset flow
and provides a switching signal.
The switch point can be set: minimum value (< 10) - 10 - 15 - 20 ... 55 - 60 - maxi-
mum value (> 60).
Factory setting in cm/s
SC0522 15
SC0523 35
SC0524 45
SC0525 60
SC0528 25
The values are valid for water and installation in pipes 2“. They change with other media/
other pipe diameters.
Contents
1 Function and features..........................................................................................2
2 Installation............................................................................................................3
3 Electrical connection............................................................................................4
4 Switch point setting..............................................................................................5
5 Operation.............................................................................................................6
6 Scale drawing ......................................................................................................6

3
UK
2 Installation
The sensor tip must be completely immersed in the medium.
• In the case of horizontal pipes mount the unit from the side, if possible (fig. 1).
- When the unit is to be mounted at the bottom of the pipe, it should be free
from deposits.
- When the unit is to be mounted at the top of the pipe, it should be completely
filled with the medium to be monitored.
• In the case of vertical pipes mount the unit in a place where the medium flows
upwards (fig. 2).
Use only a correctly-sized spanner (or torque wrench) to fasten the unit. Tighte-
ning torque max. 100 Nm (with stainless steel adapter) or ANSI B1.20.1.
1 2
Components integrated in the pipes, bends, valves, reductions, etc. lead to turbu-
lence of the medium. This affects the function of the unit.
Recommendation: Adhere to the distances between sensor and sources of inter-
ference:
10 x D
S
6 x D
S
D = pipe diameter; S = sources of interference

4
3 Electrical connection
The unit must only be mounted by an electrician.
The national and international regulations for the installation of electrical
equipment must be observed.
Voltage supply and contact rating for the relay to EN50178, SELV, PELV.
►Disconnect power before connecting the unit as follows.
N / L
1
2
4
5
3
L1 / L+
4
2 1
3
5
5: programming input
Note:miniaturefusetoIEC60127-2sheet1,≤2A(fastacting)
Operating voltage [V].................................................... 24 AC / DC ± 15% (AC: 47...63 Hz)
Contact rating [V]........................................................................................... 30 AC / 30 DC
Current rating [mA] ........................................................................................ 45 AC / 65 DC
Voltage drop [V]............................................................................................................ < 0,8
Current consumption [mA]..............................................................................................< 50
Output.............................................................................................................normally open
The maximum current rating must not be exceeded.
Even if it is exceeded for a short time the unit is destroyed.
For the scope of validity cULus: The device shall be supplied from an isolating
transformer having a secondary Listed fuse rated as noted in the following table.
Overcurrent protection
Control-circuit wire size Maximum protective device rating
Ampere
AWG (mm2)
26 (0.13) 1
24 (0.20) 2
22 (0.32) 3
20 (0.52) 5
18 (0.82) 7
16 (1.3) 10

5
UK
4 Switch point setting
There are 2 possibilities:
►Connect the SC teach button (order no. E40212) and press the button for the
specified time.
►Or apply the operating voltage (+UB) to pin 5 for the specified time.
    
   

IN (pin 5)
OUT = 1
OUT = 0
Time window
Duration [s]
Within the time windows A, B, C the output is switched depending on the flow: output closed
(OUT=1)ifflow≥SP/outputopen(OUT=0)ifflow<SP.
If the flow rises or falls within the time windows A, B, C, the switching status can change.
InthetimewindowsD,E,Ftheoutputisusedforfeedbacksignals(→tablebelow).Itdoes
not react to flow changes.
Time window Operation
A Inititalisation of the setting operation
B Confirmation of the initialisation
C Switch point (SP) setting*
pressing the teach
button or signal +UB at
pin 5 in seconds
5 10 15 20 ... 55 60 65
results in SP in cm/s Min 10 15 20 ... 55 60 Max
D Last switching status from C is maintained (= internal monitoring).
E Output signal is inverted (confirmation of the setting); duration = setting
time of the selected switch point).
F Output signal is inverted again (= internal monitoring).
After this SPNEW is active.
*Accuracy:±1s;factorysetting→1Functionandfeatures
Min < 10 cm/s; Max > 60 cm/s

6
5 Operation
After mounting and wiring check whether the unit operates correctly.
Recommended maintenance:
Check the sensor tip for build-up from time to time. Clean it with a soft cloth. If ne-
cessary, build-up which adheres firmly (e.g. lime) can be removed with a common
vinegar cleansing agent.
6 Scale drawing










