1 Preliminary note ► Instruction > Reaction, result → Cross-reference Important note Non-compliance can result in malfunction or interference� Information Supplementary note� LED lights green LED lights orange LED lights red LED flashes 2 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�...
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 outputs S1 and S2� • Factory setting 1 x normally closed (S1);...
4 Installation Using process adapters the unit can be adapted to different process connections� • The adapters have to be ordered separately as accessories� A correct fit and function of the unit and ingress resistance of the connection are only ensured using ifm adapters� • For small flow rates ifm adapter blocks are available�...
4.2 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 inter- ference: 5...10 x D 3...5 x D...
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: S2 S1 6 Operating and display elements Flow...
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 outputs S1 and S2 are open (factory setting, in case of reprogramming both outputs are closed)�...
7.2 Setting switch point SP1 ► Press the button briefly� > LED for SP1 flashes red, LED for SP2 lights red� ► Press 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�...
8.2 Configuration of the switching outputs Factory setting 1 x normally closed (S1); 1 x normally open (S2)� Reversion of the programming: ► Press the pushbutton for at least 15 s� > LED 0 lights, after approx� 5 s it flashes� >...
9 Error during adjustment If no adjustment is possible, all LEDs flash red� The unit then returns to the operat- ing mode with unchanged values� Possible cause / aid: ► Read chapter 3 Installation� Check Error during installation� whether all requirements have been met�...
Fault indication Short circuit on output S1: The operating indicator and 5 red LEDs on the left 0 1 2 3 4 5 6 7 8 9 light alternately� If the short circuit has been rectified, the unit imme- 0 1 2 3 4 5 6 7 8 9 diately passes into the normal operating state�...