DAMM BS422 - 1.2.6 Power Connection to BS422; Power Supply Requirements and Safety Warnings

Doc. No.
Rev.
Date
1.11 2020-03-06
Damm Cellular Systems A/S, Denmark
BS422 Installation and Setup guideline
BS422 Installation guide- Specifications subject to change without notice 7
1.2.6 Power connection to BS422
Before starting this task, please read the entire chapter carefully.
LAN/WAN or LAN/PPS
Figure 1-4: Power connection
The BS422 is operated at -48V nominal DC SELV (Safety Extra Low Voltage).
DO NOT UNDER ANY CIRCUMSTANCES USE A POWER SUPPLY THAT HAS
THE MINUS CONNECTED TO POWER SUPPLY CHASSIS
The cables used for power supply must be equal to or more than 3 x 1,5mm
2
Connect the three wires in the power connection cable according to the color markings inside
the BS422 system connector.
GND
0 V
(+48V)
- 48V
RX/TX A RXB PS LAN GPS OUT A