Analog outputs are designed for control of external devices such as three-way valves or heat exchangers using 0-10 V⎓ analog voltage signal or 0-20 mA current signal.
Caution!
A short circuit or long-term overload of the analog output can cause permanent damage, which is manifested by a signal conversion error or a completely non-functional output.
Connection
External devices are connected to AGND and AORx or AORy.x terminals or to AGND and AOVx or AOVy.x terminals. The following image depicts connection of a device to analog output:
Description of modes
Section 1 analog output AOR (previously only AO) can generate voltage or current:
It is necessary to select the output mode first and then control the output by entering values in the control software.
The expected values are:
- Voltage → 0-10 (V⎓)
- Current → 0-20 (mA)
Resistance measuring on section 1 AOR (previously only AO):
This feature is useful for collecting data from resistance sensors such as PT1000 temperature sensor.
Analog outputs AOV in sections 2,3 and on S5xx units support only voltage output:
The output voltage is regulated by entering the required value into the control SW. Expected values are 0-4000, which linearly corresponds to values of 0-10 V⎓ at the output.
