YSI DIQ/S 182 XT-4-PR - Manual (Page 17)

System 182 XT-4 Installation
3 - 3 ba76027e01 02/2012
3.4 Basic requirements for optimum installation
3.4.1 General information
The System IQ S ENSOR N ET supplies all components with low voltage
as well as digital communication via a shielded 2-wire line.
Because of this characteristic the energy consumption of all
components must be taken into account (power rating) when planning
an IQ S
ENSOR N ET system. The energy consumption determines
whether an additional power module is necessary (section 3.4.2).
3.4.2 Drawing up the power rating
Power rating - why? All components in the system require a specific level of electrical power
for operation. Thus, it is necessary to draw up a power rating after
selecting the desired components. At the same time a determination is
made of whether the entire power requirement of all components
(consumers) is covered by the existing power supply in the DIQ/
S 182 XT-4-PR. If this is not the case, the power available in the system
must be increased by an additional MIQ power supply module.