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1. Technical description
1.1. General description.
The SF116-CRB is a complete solution for uninterruptible power supply of 16 IP cameras 52VDC power supply
and uninterruptible power supply of the DVR (12VDC power supply). The enclosure has a battery compartment for
4x17Ah/12V batteries (connected in series) and a recorder.
The main elements of this system include:
- 16 ports PoE switch
- four batteries (4 x 17Ah/12V, connected in series), 54 VDC uninterruptible power supply unit
- 12VDC (DC/DC50HV) buck converter (DVR power supply)
In case of power decay, a battery back-up is activated immediately.
Automatic detection of any devices powered in the PoE standard is enabled at the 1
– 16 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;
the use of fiber optic module (GBIC) allows fiber optic transmission. The LEDs at the front panel indicate the operation status
(description in the table. 3).
The switch is housed in a metal enclosure (color RAL 9003) which can accommodate 4x17Ah/12V battery. The
enclosure features a micro switch tamper indicating door opening (front panel). The SF116-CRB is fitted with two LEDs on the
front panel (red LED
– indicates 230VAC power supply of the PSU, green LED indicates the presence of DC voltage).
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. Block diagram.
