IFM SI0555 Manual de usuario

Operating instructions

Flow monitors

SI0555

11458758 / 00 08 / 2010

Contents

1 Safety instructions �� 3

2 Functions and features �� 4

2�1 Application area �� 4

2�2 Operating principle flow monitoring �� 4

3 Installation �� 5

3�1 Installation location �� 5

3�2 Sources of interference in the pipe system �� 6

3�3� Mounting operation �� 6

4 Electrical connection�� 7

5 Operating and display elements �� 7

6 Set-up and settings for water�� 8

6�1 Change the switch point (optional) �� 8

6�2 High flow adjustment (optional) �� 9

7 Additional settings (optional)�� 9

7�1 Low flow adjustment �� 9

7�2 Configure the switching output �� 9

7�3 Restore the factory setting (reset) �� 10

7�4 Lock / unlock the unit �� 10

8 Error during adjustment �� 10

9 Operation �� 11

10 Maintenance �� 11

11 Scale drawing �� 12

12 Technical data �� 12

Preliminary note

• An instruction is indicated by “►”:

Example: ► Check whether the unit operates correctly�

• A reaction to the action is indicated by ">":

Example: > LED 9 lights�

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�

• The unit conforms to the relevant regulations and EC directives�

• Improper or non-intended use may lead to malfunctions of the unit or to un-

wanted effects in your application�

• That is why installation, electrical connection, set-up, operation and mainte-

nance of the unit must only be carried out by qualified personnel authorised by

the machine operator�

2 Functions and features

2.1 Application area

The unit monitors the flow of liquid and gaseous media�

2.2 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� In case of need you

can change the output to normally closed (→ 7�2)� It then 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 if 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�

3 Installation

Using process adapters the unit can be adapted to different process connections�

• Adapters have to be ordered separately as accessories�

A correct fit of the unit and ingress resistance of the connection are only

ensured using ifm adapters�

• For small flow rates ifm adapter blocks are available�

3.1 Installation location

General



• The sensor tip is to be completely sur-

rounded by the medium�

• Insertion depth of the sensor: minimum

12 mm�

Recommended

• For horizontal pipes: mounting from

the side�

• For vertical pipes: mounting in the rising

pipe�

Conditional

• Horizontal pipe /mounting from the bot-

tom: 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!

3.2 Sources of interference in the pipe system

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

interference:



 











 









D = pipe diameter; S = sources of interference

3.3. Mounting operation

► Ensure that the system is free of pressure during installation�

► Ensure that no media can leak at the mounting location during installa-

tion�

  









► Grease the threads of the process connection (1), adapter (2) and nut (3)�

Note: The sensor tip (A) must not be in contact with grease�

► Screw the suitable adapter into the process connection�

► Place the flow monitor onto the adapter and tighten the nut� Tightening torque

25 Nm� Ensure that the unit is correctly oriented�

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�

► Disconnect power�

► Connect the unit as follows:





















Core colours of ifm sockets:

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

5 Operating and display elements

 









 

1: Operation display

• The green LEDs indicate the current flow (the LEDs 0 to 9 represent the range between

no 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

6 Set-up and settings for water

(For media other than water → 7�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�

 





The factory setting is suitable for the applica-

tion�

► No further settings are required�

 





Your normal flow is below the representation

range of the display�

2 setting options:

► Change the switch point (→ 6�1)�

► Carry out high flow adjustment (→ 6�2)�

 





Your normal flow exceeds the representation

range of the display (LED 9 flashes)�

► Carry out high flow adjustment (→ 6�2)�

You can restore the factory setting any time� (→ 7�3)�

6.1 Change the switch point (optional)

For the factory setting the switch point is at LED 7� A change makes sense if:

• the display shows example 2�

• the flow fluctuates much or pulsates�

• if a faster response time of the unit is requested (low switch point = fast re-

sponse with rising flow, high switch point = fast response with falling flow)�

► Briefly press the pushbutton or �

> The switch point LED flashes�

► Press the pushbutton or as often as required� Each press of the push-

button 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�

6.2 High flow adjustment (optional)

The unit determines the existing flow as normal flow and adapts the display repre-

sentation (all LEDs except the switch point LED light green)�

► 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 pushbutton�

The unit is now adapted to your flow conditions� It passes into the operating mode,

the display should now show example 1�

Note: The adjustment affects the switch point: It is increased proportionally

(maximum up to LED 7)�

7 Additional settings (optional)

7.1 Low flow adjustment

If the unit is used in media other than water, you should additionally adapt the unit

to the minimum flow�

Note: The following adjustment must only be carried out after the high flow adjust-

ment�

► 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 pushbutton� The unit adopts the new value and passes into the

operating mode�

7.2 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 pushbutton� The output is changed to normally closed operation�

For a new changeover repeat the operation�

7.3 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 pushbutton� All settings are reset to the factory setting:

- operating area: 5 ��100 cm/s for water

- switch point: LED 7

- output function: NO

- unlocked�

7.4 Lock / unlock the unit

The unit can be locked electronically to prevent unintentional settings�

► Press both setting pushbuttons simultaneously for at least 10 s in the operating

mode�

> The indication goes out, the unit locks or unlocks�

On delivery: unlocked�

8 Error during adjustment

If no adjustment is possible, all LEDs flash red� The unit then passes into the

operating mode with unchanged values�

Possible cause /aid:

Error during installation�

► Read chapter 3 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 once again�

The sequence high flow /low flow adjust-

ment was not adhered to�

► Carry out the two adjustment operations

again in the right sequence�

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