IF303 Triple Channel Current to PROFIBUS Converter

The IF303 is a converter mainly intended for interface of analog transmitters to a PROFIBUS system. The IF303 receives a current signal, typically 4-20 mA or 0-20 mA, and makes it available to the PROFIBUS PA network. The digital technology used in the IF303 enables a single converter to accept three inputs and also provide several types of transfer functions.

This provides an easy interface between the field and the control room and also includes several interesting features that considerably reduce the installation, operation and maintenance costs.

Some Characteristics

0-20 mA, 4-20 mA or any within 0 and 20 mA. Reverse polarity protected.
PROFIBUS PA,Digital only, complies with IEC 1158-2 (H1): 31.25 kbit/s and voltage mode with bus power
0.03% of span for 4-20 mA, 0.005 mA for other spans
Power Supply
Bus powered: 9-32 Vdc.
Power Consumption
Quiescent 12 mA.
Using local adjustment magnetic tool if device is fitted with LCD display. Complete configuration possible using PC software interface.
Optional LCD indicator
Injected low copper aluminum with polyester painting or 316 stainless steel housing
Process Temperature Limits
-40 to 85ºC (-40 to 185 ºF)
Ambient Humidity Limits
0 to100 % RH
Hazardous Area Certification
Explosion proof, weather proof and intrinsically safe
Wall, panel, or 2" pipe with optional bracket
Nominal: 0.80 kg;
Digital display adds: 0.13 kg;
Mounting bracket adds: 0.6 kg.


Smar Device Library CD contains several libraries that will be used in the integration of the Smar equipments in several applications (of different communication protocols as: HART, Profibus and Foundation FieldBus).

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