322444 Pepperl + Fuchs

What type of device is this?

This is a Pepperl+Fuchs frequency-to-voltage/current converter used to display, process and convert periodic input signals such as frequency or rotational speed into proportional analogue output signals.

What is the main function of this converter?

It measures input pulses, calculates the corresponding frequency or speed, and converts that value into a selectable analogue output such as 0–10 V, 2–10 V, 0–20 mA or 4–20 mA.

What types of input signals can it process?

The unit can process periodic pulse signals from common industrial sensors, including 2-wire, 3-wire and 4-wire proximity sensors, as well as incremental rotary encoders.

What is the maximum input frequency?

The converter is designed for input frequencies up to 40 kHz, with a required pulse pause and pulse length of at least 12 µs.

Can it be used for speed measurement?

Yes. In addition to frequency measurement in Hz, the device can display and process rotational speed in min-1, making it suitable for speed monitoring applications on rotating machinery.

What analogue output options are available?

The analogue output can be configured as 0–10 V DC, 2–10 V DC, 0–20 mA or 4–20 mA, allowing the converter to interface with a wide range of industrial control and monitoring equipment.

Does the unit include a display?

Yes. It has a 4-digit red 7-segment display with 7 mm digit height. The display can show the input value in Hz or min-1, or the output value in V or mA.

How are parameters configured?

Parameters are set using a keypad-driven menu on the front of the device. Adjustable settings include operating mode, pulse output division factor, signals per rotation, measurement range, display format and display rate.

What supply voltage does it require?

The device requires a rated supply voltage of 20–30 V DC and has a power consumption of less than 5 W.

Does it provide sensor power?

Yes. The converter includes an auxiliary sensor supply output. The sensor supply is derived from the rated voltage minus approximately 1.5 V and is short-circuit protected up to 30 mA.

What digital output function is included?

The unit provides a digital incrementing pulse output. The input frequency can be divided by an adjustable factor from 1 to 9999 before being output.

What mounting method is used?

The converter is built in a modular terminal housing and is intended for installation in a control cabinet. It can be snapped onto a 35 mm standard rail or fixed using screws.

What is the ingress protection rating?

The device has an IP20 protection rating, meaning it is intended for use inside suitable enclosures or control cabinets in indoor industrial environments.

What ambient temperature range is specified?

The specified operating ambient temperature range is -25 to 40 °C, with a storage temperature range of -40 to 85 °C.

What connection type does it use?

The converter uses removable terminals suitable for conductor cross-sections from 0.2 mm2 to 2.5 mm2.

What are typical applications for this device?

Typical applications include speed monitoring, frequency measurement, pulse signal conversion, machine monitoring, conveyor systems, rotating equipment, process automation and control cabinet signal conditioning.

Can the measurement range be adjusted?

Yes. The final measurement range value can be set so that the selected maximum frequency or speed corresponds to the analogue output maximum, such as 10 V or 20 mA.

What accuracy is specified for signal conversion?

The stated deviation is no more than 0.2% of full-scale value, making it suitable for industrial signal conversion where consistent frequency or speed scaling is required.

Is galvanic isolation provided at the input?

Yes. The NPN/PNP input is galvanically isolated, helping separate the sensor input circuit from the converter electronics.

What is the display update range?

The display rate is adjustable from 0.01 s to 2.5 s, allowing the indication to be tuned for either faster response or a steadier displayed value.