IFM SI6600 User manual

Operating instructions
Flow monitor
SI6600
SI6700
SI6800
80285743 / 00 09 / 2019
UK

2
Contents
1 Preliminary note���������������������������������������������������������������������������������������������������3
1�1 Symbols used ������������������������������������������������������������������������������������������������3
2 Safety instructions �����������������������������������������������������������������������������������������������3
3 Functions and features ����������������������������������������������������������������������������������������4
3�1 Application area ��������������������������������������������������������������������������������������������4
3�2 Operating principle flow monitoring ���������������������������������������������������������������4
4 Installation������������������������������������������������������������������������������������������������������������5
4�1 Installation location ���������������������������������������������������������������������������������������5
4�2 Interference in the pipe system ���������������������������������������������������������������������6
4�3 Installation procedure ������������������������������������������������������������������������������������6
4�3�1 Installation using an adapter with sealing ring (hygiene-compliant) ����6
4�3�2 Installation using a welding adapter with sealing ring (hygiene-
compliant)�������������������������������������������������������������������������������������������������������7
4�3�3 Installation using a process adapter with metal-to-metal seal ��������������7
4�3�4 Installation to G 1 flange�����������������������������������������������������������������������7
4�4 Use in hygienic areas to 3-A��������������������������������������������������������������������������8
4�5 Use in hygienic areas to EHEDG ������������������������������������������������������������������8
5 Electrical connection��������������������������������������������������������������������������������������������9
6 Operating and display elements ������������������������������������������������������������������������10
7 Set-up and settings for water�����������������������������������������������������������������������������10
7�1 Change the switch point (optional) �������������������������������������������������������������� 11
7�2 High-flow adjustment (optional) ������������������������������������������������������������������� 11
8 Additional settings (optional) ����������������������������������������������������������������������������� 11
8�1 Low-flow adjustment������������������������������������������������������������������������������������ 11
8�2 Configure the switching output ��������������������������������������������������������������������12
8�3 Restore the factory setting (reset) ���������������������������������������������������������������12
8�4 Lock / unlock the unit�����������������������������������������������������������������������������������12
9 Error during adjustment �������������������������������������������������������������������������������������13
10 Operation���������������������������������������������������������������������������������������������������������14
11 Maintenance ����������������������������������������������������������������������������������������������������14

3
UK
1 Preliminary note
You will find technical data, approvals and further information using the QR
code on the unit / packaging or at www�ifm�com�
1.1 Symbols used
►Instruction
> Reaction, result
→Cross-reference
Important note
Non-compliance may result in malfunction or interference�
LED lights green
LED lights orange
LED lights red
LED flashes
2 Safety instructions
• The device described is a subcomponent for integration into a system�
- The manufacturer is responsible for the safety of the system�
- The system manufacturer undertakes to perform a risk assessment and to
create a documentation in accordance with legal and normative requirements
to be provided to the operator and user of the system� This documentation
must contain all necessary information and safety instructions for the operator,
the user and, if applicable, for any service personnel authorised by the
manufacturer of the system�
• Read this document before setting up the product and keep it during the entire
service life�
• The product must be suitable for the corresponding applications and
environmental conditions without any restrictions�
• Only use the product for its intended purpose (→ Functions and features).
• Only use the product for permissible media (→ Technical data).

4
• If the operating instructions or the technical data are not adhered to, personal
injury and/or damage to property may occur�
• The manufacturer assumes no liability or warranty for any consequences
caused by tampering with the product or incorrect use by the operator�
• Installation, electrical connection, set-up, operation and maintenance of the
product must be carried out by qualified personnel authorised by the machine
operator�
• Protect units and cables against damage�
3 Functions and features
3.1 Application area
The unit monitors the flow in liquid and gaseous media�
3.2 Operating principle flow monitoring
• The unit detects the flow speed to the calorimetric measuring principle and
switches the output:
- output closed if medium is flowing / output open if no medium is flowing�
This applies to the unit on delivery: output = normally open� If necessary, you
can change the output to normally closed operation (→ 8.2). Afterwards the
following applies: output open if medium is flowing�
• If the flow speed increases, the switching status changes when the switch point
is reached�
• If the flow speed falls again, the switching status changes when the value "SP
minus hysteresis" is reached�
The hysteresis changes with the flow speed and it is essentially influenced by
the set monitoring range�
It is 2���5 cm/s for the setting 5���100 cm/s (= factory setting), it increases with
higher flow speeds�
• The typical response time of the unit is 1���10 s� It can be influenced by the
setting of the switch point:
- Low switch point = quick reaction with rising flow�
- High switch point = quick reaction with falling flow�

5
UK
4 Installation
►Ensure that the system is free of pressure during installation�
►Ensure that no media can leak at the mounting location during
installation�
4.1 Installation location
General
≥12 mm
• The sensor tip is to be completely
surrounded by the medium�
• Immersion depth of the probe:
minimum 12 mm�
Recommended
• For horizontal pipes: mounting from
the side�
• For vertical pipes: mounting in the
rising pipe�
Conditionally possible
• Horizontal pipe /mounting from
the bottom: if the pipe is free from
build-up�
• Horizontal pipe /mounting from the
top: if the pipe is completely filled
with medium�
To avoid
• The sensor tip must not be in
contact with the pipe wall�
• Do not mount in downpipes that are
open at the bottom!

6
4.2 Interference in the pipe system
Components integrated in the pipes, bends, valves, reductions, etc� lead to
turbulence of the medium� This affects the function of the unit�
Recommendation: Adhere to the distances between sensor and sources of
interference:
D = pipe diameter; S = sources of interference
4.3 Installation procedure
The unit can be fixed to different process connections�
►Insert the unit with process adapter into the process connection and tighten
using a spanner�
Information about available adapters at www�ifm�com�
►Observe the instructions of the adapter�
►Use a lubricating paste which is suitable and approved for the
application�
►Recommended tightening torque 35 Nm�
4.3.1 Installation using an adapter with sealing ring (hygiene-compliant)
Order no� E332xx / E333xx�
►To meet the hygiene regulations use a process adapter with leakage port�
The adapters are supplied with EPDM O-ring (order no� E30054�
More sealing rings are available as accessories:
• FKM O-ring (order no� E30123)
• PEEK sealing ring (order no� E30124)� The PEEK sealing ring is long-term
stable and maintenance-free� When you replace the PEEK sealing ring or
change from a PEEK sealing ring to an O-ring the process adapter also needs
to be replaced with a new equivalent adapter�

7
UK
4.3.2 Installation using a welding adapter with sealing ring (hygiene-
compliant)
►To meet the hygiene regulations use a process adapter with leakage port�
►Make sure that the process adapter does not warp during welding�
The adapter is supplied with EPDM O-ring (order no� E30054�
Another sealing ring is available as accessory:
• FKM O-ring (order no� E30123)�
4.3.3 Installation using a process adapter with metal-to-metal seal
Order no� E337xx / E338xx
A long-term stable and maintenance-free fitting without bug traps in the metal-to-
metal seal is only valid for once-only mounting�
If the sealing has to be installed several times, use a new adapter�
4.3.4 Installation to G 1 flange
The process is sealed with the sealing ring at the back of the sensor�
The sealing area at the flange must be flush with the tapped hole and have a
surface characteristic of min� Rz = 6�3�

8
4.4 Use in hygienic areas to 3-A
1
3
4
2
5
The following applies to units with 3-A
certification:
►Only use adapters with 3-A
certification for the process
connection�
►Do not install the unit at the lowest
point of the pipe or tank (→ position
5) in order that the medium can
run off the area of the measuring
element�
4.5 Use in hygienic areas to EHEDG
The sensor is suited for CIP (cleaning in process) when installed correctly�
►Observe the application limits (temperature and material resistance)
according to the data sheet�
►Make sure that the sensor is integrated into the system according to EHEDG�
►Use self-draining installation�
►Only use process adapters permitted according to EHEDG with special seals
required by the EHEDG position paper�
The gasket of the system interface must not be in contact with the
sealing point of the sensor�
►In case of structures in a tank, the installation must be flush mount� If not
possible then direct water jet cleaning and cleaning of dead spaces must be
possible�

9
UK
►Leakage ports must be clearly visible and must be installed facing downwards
for vertical pipes�
►To avoid dead space adhere to the dimensions: L < (D - d)�
1
d
D
L
1: leakage port
5 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:
Core colours of ifm sockets:
1 = BN (brown), 3 = BU (blue), 4 = BK (black)

10
6 Operating and display elements
1: operation display
• The green LEDs indicate the current flow (LEDs 0 to 9 represent the range between
minimum flow and maximum flow)�
• A lighting LED indicates the position of the switch point (orange = output closed, red =
output open)�
2, 3: setting buttons for adjustment and configuration
7 Set-up and settings for water
(For media other than water → 8.1: low-flow adjustment).
►Switch on the supply voltage�
> All LEDs light and go out again step by step� During this time the output is
closed (if configured as normally open)� The unit is in the operating mode�
►Let the normal flow circulate in the installation�
►Check the display and determine further actions�
1
The factory setting is suitable for the
application�
►No further settings are required�
2
Your normal flow is below the representation
range of the display�
2 setting options:
► Changing the switch point (→ 7.1).
► Carry out high flow adjustment (→ 7.2).
3
Your normal flow exceeds the representation
range of the display (LED 9 flashes)�
► Carry out high flow adjustment (→ 7.2).
You can restore the factory setting any time. (→ 8.3).

11
UK
7.1 Change the switch point (optional)
For the factory setting the switch point is at LED 7� A change makes sense in the
following cases:
• the display shows example 2�
• the flow fluctuates much or pulsates�
• A faster response time of the unit is requested (low switch point = fast response
with rising flow, high switch point = fast response with falling flow)�
Proceed as follows:
►Briefly press the pushbutton or �
> The switch point LED flashes�
►Press or as often as required� Each press of the pushbutton shifts the
LED by one position in the indicated direction�
Note: If no pushbutton is pressed for 2 s, the unit returns to the operating mode
with the newly set value�
7.2 High-flow adjustment (optional)
The unit determines the existing flow as normal flow and adapts the display
representation (all LEDs except the switch point LED light green)�
Proceed as follows:
►Let the normal flow circulate in the installation�
►Press the pushbutton and keep it pressed�
> LED 9 lights, after approx� 5 s it flashes�
►Release the button�
The unit is now adapted to your flow conditions� It returns to the operating mode,
the display should now show example 1�
The adjustment has failed if all LEDs are flashing red instead� Possible reasons / remedy
→ chapter 9.
Note: The adjustment affects the switch point: It is increased proportionally
(maximum up to LED 7)�
8 Additional settings (optional)
8.1 Low-flow adjustment
If the unit is used in media other than water, you should additionally adapt the unit
to the minimum flow�

12
Attention: The following adjustment must only be carried out after the high-flow
adjustment�
Proceed as follows:
►Let the minimum flow circulate in the installation or ensure flow standstill�
►Press the pushbutton and keep it pressed�
> LED 0 lights, after approx� 5 s it flashes�
►Release the button� The unit adopts the new value and returns to the operating
mode�
The adjustment has failed if all LEDs are flashing red instead� Possible
causes / solution (→ 9 Error during adjustment)�
8.2 Configure the switching output
The unit is delivered as normally open� In case of need you can change the output
to normally closed:
►Press the pushbutton for at least 15 s�
> LED 0 lights, after approx� 5 s it flashes�
> After 10 s the current setting is displayed: LEDs 5���9 light orange (= output
normally open)�
> After approx� 15 s LEDs 0���4 flash orange�
►Release the button� The output is changed to normally closed operation�
For a new changeover: repeat the operation�
8.3 Restore the factory setting (reset)
►Press the pushbutton for at least 15 s�
> LED 9 lights, after approx� 5 s it flashes�
> After approx� 15 s LEDs 0���9 flash orange�
►Release the button� All settings are reset to the factory setting:
- operating area: 5 ���100 cm/s for water
- set point: LED 7
- output function: NO
- not locked�
8.4 Lock / unlock the unit
The unit can be locked electronically to prevent unintentional settings�
►Press both setting buttons simultaneously for 10 s in the operating mode�

13
UK
> The indication goes out, the unit locks or unlocks�
On delivery: not locked�
9 Error during adjustment
If no adjustment is possible, all LEDs flash red� The unit then returns to the
operating mode with unchanged values�
Possible cause / aid:
Error during installation�
►Read chapter 4 Installation� Check
whether all requirements have been
met�
The difference between maximum flow and
minimum flow is too small�
►Increase the flow difference and carry
out the adjustment again�
The sequence high flow /low flow
adjustment was not adhered to�
►Carry out the two adjustment operations
again in the right sequence�

14
10 Operation
After every power on all LEDs light and go out again step by step (during this time
the output is closed if configured as normally open)� Then the unit is ready for
operation�
In case of power failure or interruption of the operating voltage all settings remain�
Operation indication
Green LED bar: current flow within the display
range�
Indication of the switch point (SP):
- LED (orange: output closed�
- LED red: output open�
LED 9 flashes: current flow above the display
range�
LED 0 flashes: current flow far below the display
range�
Interference indicators
Short circuit at the switching output:
The operating indicator and red LEDs flash
alternately�
If the short circuit has been rectified, the unit
immediately passes into the normal operating
state�
The current operating state is displayed�
Display OFF
(no LED lights):
Operating voltage too low (< 19 V) or failed�
Ensure a correct
voltage supply�
11 Maintenance
Recommended maintenance:
►Check the sensor tip for build-up from time to time�
►Clean it using a soft cloth� Stubborn build-up (e�g� lime) can be removed using
a common vinegar cleaning agent�
This manual suits for next models
2
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