IFM SI5012 (01) PDF Document

When using the IFM SI5012, please adhere to the following safety instructions:

• The unit described is a subcomponent for integration into a system. The system architect is responsible for the safety of the system.

• The system architect undertakes to perform a risk assessment and to create 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 architect 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.

• Only use the product for permissible media.

• 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.

The IFM SI5012 detects flow based on the calorimetric measuring principle and switches the output. The factory setting places the switch point at LED 7 and sets the device to normally open. The switch point LED indicates the switching status:

• Orange = output closed

• Red = output open

With normal flow, the output has the following status:

• Output closed for normally open function

• Output open for normally closed function

If the flow velocity decreases, the switching status changes when the value falls below the switch point (SP) minus the hysteresis.

The typical response time of the device is 1 to 10 seconds. This 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.

For proper installation of the IFM SI5012, please follow these guidelines:

Immersion Depth:

• The sensor tip must be completely surrounded by the medium.

• Recommended minimum immersion depth is 12 mm.

Recommended Mounting Position:

• For horizontal pipes: mounting from the side.

• For vertical pipes: mounting in the rising pipe.

Conditionally Possible Installation Position:

• For horizontal pipes, if the pipe is free from build-up: mounting from below.

• For horizontal pipes, if the pipe is completely filled with medium: mounting from the top.

Impermissible Installation Position:

• The sensor tip must not be in contact with the pipe wall.

• Do not mount in downpipes that are open at the bottom.

Structures in the pipe, such as bends, valves, and reducing pieces, can affect the function of the IFM SI5012. It is important to adhere to the specified distances between the sensor and any interference:

• Inlet side: 5 to 10 times the outside diameter of the pipe (D).

• Outlet side: 3 to 5 times the outside diameter of the pipe (D).

Follow these steps to connect the device to the process connection:

1. Grease the threads of the process connection, adapter, and sensor. Use a lubricating paste which is suitable and approved for the application. Ensure no grease is applied to the sensor tip.

2. Screw the suitable adapter into the process connection.

3. Place the flow monitor onto the adapter and tighten the nut. The tightening torque is 25 Nm. Ensure that the unit is correctly oriented.

The IFM SI5012 must be connected by a qualified electrician. Ensure power is disconnected before proceeding. Voltage supply should be according to SELV, PELV.

The pin assignments are as follows:

Important Note: Only use 4-wire sockets without a bridge between pin 2 and pin 4. If 3-wire sockets with a bridge between pin 2 and pin 4 are used, power on of the output stage triggers the remote calibration.

The IFM SI5012 features two primary display and operating elements:

1. Operation indication (LED bar):

• The LEDs 0…9 represent the range between flow standstill and maximum flow.

• The green LEDs show the current flow.

• An illuminated LED shows the position of the switch point: Orange for a closed output, Red for an open output.

2. Setting buttons:

• Two buttons ([<] and [>]) are provided for adjustment and configuration.

1. Switch on the supply voltage. All LEDs will light up and then go out step by step.

2. Let the normal flow circulate in the installation.

3. Check the display and determine further actions based on the table below:

Note: For media other than water, carry out an additional Low-flow adjustment.

To change the switch point from the factory setting of LED 7:

1. Briefly press the [<] or [>] button. The switch point LED will flash.

2. Press [<] or [>] as often as required. Each press shifts the LED by one position in the indicated direction.

3. When the required switch point is reached, do not press the button for more than 2 seconds.

4. The device goes into operating mode with the newly set value.

This procedure adapts the device to your specific flow conditions.

1. Let the normal flow circulate in the installation.

2. Press the [>] button and keep it pressed.

3. LED 9 will turn on, and after approximately 5 seconds, it will flash.

4. Release the [>] button.

The device is now adapted to the flow conditions and goes into operating mode. This adjustment also increases the switch point proportionally (up to a maximum of LED 7).

If the device is used in media other than water, it should be additionally adapted to the minimum flow. A high-flow adjustment must be carried out before the low-flow adjustment.

1. Let the minimum flow circulate in the installation or ensure flow standstill.

2. Press the [<] button and keep it pressed.

3. LED 0 will turn on, and after approximately 5 seconds, it will flash.

4. Release the [<] button.

The device adopts the new value and returns to the operating mode.

Upon delivery, the device is set to normally open. To change over to the normally closed function:

1. Press the [<] button for at least 15 seconds.

• LED 0 will turn on, and after approx. 5 seconds it will flash.

• After 10 seconds the current setting is displayed: LEDs 5…9 light orange (indicating output normally open).

• After approx. 15 seconds LEDs 0…4 flash orange.

2. Release the [<] button.

The output is now changed to normally closed function. To change back, repeat the operation.

To reset all settings to the factory defaults:

1. Press the [>] button for at least 15 seconds.

• LED 9 will turn on, and after approx. 5 seconds it will flash.

• After approx. 15 seconds LEDs 0…9 will flash orange.

2. Release the [>] button.

All settings are reset to the factory setting:

• Operating range: 5…100 cm/s for water

• Switch point: LED 7

The unit can be locked electronically to prevent unauthorised setting. The factory setting is not locked.

• To Lock: Press both setting keys ([<] and [>]) for 10 seconds. The display will go off, and the unit will be locked.

• To Unlock: Repeat the process. Press both setting keys for 10 seconds.

The device can be adapted to new flow conditions using the remote setting function via pin 2. The relative switch point is not shifted.

High-flow adjustment:

1. Let the normal flow circulate in the installation.

2. Apply Ub+ to pin 2 for > 5…< 10 seconds. LED 9 will turn on and flash after approx. 5 seconds.

3. Disconnect the voltage. The device adapts to the flow conditions and goes into operating mode.

Low-flow adjustment:

1. Let the normal flow circulate in the installation.

2. Apply Ub+ to pin 2 for > 10…< 15 seconds. LED 0 will turn on and flash after approx. 5 seconds.

3. Disconnect the voltage. The device adapts to the flow conditions and goes into operating mode.

Restore factory settings:

1. Apply Ub+ to pin 2 for > 15 seconds. LED 9 will turn on and flash, and after approx. 15 seconds LEDs 0…9 will flash orange.

2. Disconnect the voltage. All settings are reset to the factory setting.

Important: Observe the time frame for the input signal on pin 2 exactly to avoid an unintentional reset to the factory setting.

The device displays the current flow and the switching status. In case of power failure, all settings remain. The following table explains the display for a normally open function with the switch point at LED 4:

To maintain your IFM SI5012, ensure that the sensor tip is free from build-up:

• Check the sensor tip for build-up one month after set-up.

• Repeat check regularly. Determine check intervals based on the application.

• In case of soiling, clean the sensor tip with a soft cloth. Stubborn build-up, such as lime, can be removed using a common vinegar cleaning agent.

• After use, dispose of the device in an environmentally friendly way in accordance with the applicable national regulations.

Only the manufacturer is allowed to repair the unit.