What power supply is required for ZETSENSOR modules? Are there any ready solutions for that?
Power supply of ZETSENSOR modules must be from 9 to 24 V, and required power is calculated by formula:
where n – number of interface modules connected to power supply unit, Рi — power of i-th module
Power consumption of all types of ZETSENSOR modules is 1 W, and the formula above changes as follows: Р=1,5*n
Example: for power supply of 40 units 60 W is required.
Note: if third party primary converters connect to the measuring modules, it’s necessary to adjust power consumption.
The ZETSENSOR modules provide reverse polarity protection and in case of connecting with reverse polarity they will not fail, but try to avoid voltages over 36 V, since it causes burn out of built-in protective fuses.
Note that building long measuring lines requires controlling modules’ power supply in points of their connection to the measuring line. Power supply voltage can be measured with a multimeter between the “orange” and “white-orange” contacts (for the modules in plastic case) or “1” and “4” (for industry version modules)*
* — for the ZET7×12, BC314, ZET7×50, and ZET7×54 modules power supply voltage is measured between contacts “3” and “5”.