24
Installation & Operation Manual
Copyright © Puretec Pty Ltd 2022
Using The 4-20ma Analog Output For PLC Connectivity
The UV controller provides a two wire 4-20 mA analog output on the PCB to interface with
a PLC/SCADA system. To use this function connect the output from the UV controller to the
analog input of the PLC and set the range as follows:
•
4 mA = 0%
•
20 mA = 120%
By default, the controller outputs the UV intensity as a percentage as per the above range.
In specific cases where the absolute UV intensity needs to be transmitted, please contact
Puretec customer support.
IMPORTANT NOTES
1. Interface wire should be two core shielded cable. Avoid the use of multi-core wire
as it causes EMI interference. The shield should be grounded at one end
2. This is 2 wire analog output,
DO NOT
connect an external power supply. It will
damage the UV controller permanently.
4-20ma For PLC Connectivity
Содержание RI-HF19
Страница 27: ...27 Puretec Radfire RI HF Series Copyright Puretec Pty Ltd 2022 ...
Страница 28: ......