RSFUPS108
RACK POWER
3
1. Technical description.
1.1. General description.
The RSFUPS108 is a complete solution for power supply and battery backup of 8 IP cameras (48VDC power
supply) in
RACK
19" standard.
The main elements of this system include:
- 10 ports PoE switch
- buffer power supply 27,6V unit which can accommodate two 12V batteries
- a converter (DC/DC48250) increasing the voltage to 48VDC (supply of the PoE switch)
In case of mains power loss, a battery back-up is activated immediately. Automatic detection of any devices
powered in the PoE standard is enabled at the 1
– 8 ports of the switch. The G1/TP, G2/TP ports is used for connection
of another network device via RJ45 connector. The switch is fitted with SFP slots (marked as G1/SFP and G2/SFP); the
use of fiber optic module (GBIC) allows fiber optic transmission. The LED lights at the front panel indicate the operating
status of the device.
The switch is fitted with the ALARM technical output of collective failure. In the case of failure, a LED light is
activated, which is accompanied by switching of relay contacts and acoustic indication.
The PoE technology ensures a network connection and reduces installation costs by eliminating the need to
supply a separate power cable for each device. This method allows supplying other network devices, such as IP phone,
wireless access point or router.
1.2. Block diagram.
Fig.1. The block diagram of the PSU.
1.3. Description of components and connectors.
Table 1. (See Fig. 2, 3)
Element no.
[Fig. 2]
Description
AC
OK
– green LED, indicating the presence of 230V voltage
DC
OK
– green LED, indicating the presence of DC voltage
TEMP
– red LED, indicating too high temperature of the power supply (>70°C)
LoB
– red LED, indicating too low battery voltage (<23V)
LED ALARM
– red LED collective failure indication
BAT
– battery output
ALARM
– technical output of collective failure – relay
