TA ACON 34 User Manual

Analogue signal converter

This device has been designed to adjust signals between UVR controllers and third party
devices or industrial sensors.

It can be used to convert different signal levels or current into voltage and vice versa. Thanks
to input filters, PWM signals can also be converted into analogue values.

Conversion of 0-10 V signal into a 0-24 V signal
Conversion of 0-10 V signal into a 0-20 mA current
Freely usable level converter (input: 0-10 V or 0-20 mA), converts input into a voltage

signal with a transfer ratio that can be adjusted using two potentiometers and a jumper

Conversion of a PWM signal (500 Hz to 1 kHz/10 V) into a 0-10 V signal

ACON 34

Vers. 1.00 EN

Technische Alternative RT GmbH

A-3872 Amaliendorf, Langestr. 124

Tel [phone] [e-mail]

Power supply +12 V

The converter is supplied by the 12 V connection of a freely programmable controller or by an
external power supply unit (12 V).

Regardless of the connection, the PCB is protected against short circuits for one minute.
A resettable fuse (0.5 A) is installed internally upstream of the supply input.
With no output load, the device typically draws a standby current of 6 mA.

1. 0-10 V to 0-20 mA converter

In addition to the 0-10 V signal, a current of 4-20 mA is also a standard interface.
This level converter generates current that is proportional to the input voltage.
The minimum current of 4 mA is not generated and must be achieved by programming the

0-10 V source accordingly.
Accuracy +/- 0.5 mA

12 V DC

Power supply

Earth

0-10 V signal

0-20 mA signal

Earth

2. 0-10 V to 24 V converter

Some boiler manufacturers use a 0-24 V signal in their products, which this converter
supplies.

Accuracy +/- 0.5 V at an internal resistance of the boiler controller of > 3 k



3. Freely adjustable level converter

The third input makes it possible to divide or amplify the input signal. The input signal can be
a 0-10 V voltage or 0-20 mA current (depending on jumper position); the output signal is

always a voltage.

3.1 Input signal – 0-10 V voltage
The jumper must be in position "U".

3.1.1. Voltage amplification

The output supplies 1 to 5 times the value of the input signal.

The amplification factor is set at the right-hand potentiometer. The
potentiometer setting must be established by taking measurements with
a multimeter.

Please note that the output signal is limited to approx. 25 V even at higher amplification
levels.

0-24 V signal

Earth

0-10 V signal

Earth

0-10 V signal

Earth

Earth

Voltage amplification

Jumper position "U"