User Manual Chapter 2

Chapter 2: Preparing the Installation Site 2-3
Power, Grounding and Distribution Requirements
Voltage transients, line noise, surges, sags, impulses, and spikes can
happen routinely or sporadically. When such phenomena occur,
protective devices such as surge protectors may help to ensure proper
operation of the equipment.
Power Requirements
The CBS does not have an internal power supply. It receives DC power
from an external power supply that can support up to five CBSs. The
power supply's output is +24 VDC.
Note: Power requirements in EU/EC countries limit the number of
CBSs on one power supply to three (3).
For maximum system integrity, install the power supply(s) on a
dedicated branch circuit from a distribution panel that does not supply
any switched inductive loads (motors, air conditioners, etc.). Do not
connect anything else to this branch circuit except other DecisioNet
System equipment. This branch circuit must remain "live" at all times.
Each power supply circuit should consist of three conductors,
including separate wires for the line, neutral, and insulated ground
connections to the distribution panel.
The following are the specifications for the CBS power supply:
Voltage (in) 100 to 240 Volts AC
Current (in) 3 Amps
Power (in) 100 Watts
Frequency 50 or 60 Hz
Voltage (out) 24 Volts DC
Current (out) 4.5 Amps