IFM SI6600 Manuale utente

Operating instructions

Flow monitor

SI6600

SI6700

SI6800

80285743 / 00 09 / 2019

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

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).

• 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�

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!

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:

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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�

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�

4.4 Use in hygienic areas to 3-A

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�

►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: 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:

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

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



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Core colours of ifm sockets:

1 = BN (brown), 3 = BU (blue), 4 = BK (black)

6 Operating and display elements

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

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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�

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The factory setting is suitable for the

application�

►No further settings are required�

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

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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).

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



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).

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