Sam Sirius 830, Инструкция по установке и быстрому запуску

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Sirius 830 Installation Manual www.s-a-m.com Power Supplies
Issue 2 Rev 2 Page 37 © 2016 SAM
8.2 Power Distribution
The power supply shelves provide 48 V DC for distribution to the entire frame. All router
modules (inside the frame) have on-board DC to DC converters to locally supply the required
voltages. A single Green LED on the front edge of each module indicates that all is working
correctly. This arrangement provides simple power distribution, as well as effective power
de-coupling between modules.
8.3 Power and Alarm Connections to the Sirius 830 Frame
The Sirius 830 is powered by up to two 2RU power supply Shelves depending on the router
configuration and mains voltage (see section 3.4.5). The power supply shelves each have up
to four PowerCon AC input connectors (see Fig 21.).
Each power supply shelf has three 48 V DC power connectors, only two connectors from
each power supply shelf are used to power the Sirius 830. The cover on the unused 48 V DC
socket must be left on the power shelf.
Up to two power supply alarm cables (636028) are supplied with the Sirius 830 depending on
the number of power supply shelves fitted. Connect each power supply shelf to the router
alarm rear panel using the 25-Way connector. The alarm signals send a warning to the Door
PC, and via external GPIs or an external Workbench system if there is a power supply failure.
The power supply alarm cables are supplied by SAM and can be ordered as either 2.5 metre
cables or 8 metre cables.
Important:
The Fan Control modules provide power to all fan modules. At least one Fan Control
module must be present or the fans will stop, which can cause the Sirius 830 to quickly
overheat. To prevent the fans from stopping there are two Fan Control modules.
• The power supply shelves MUST be isolated from the AC supply by means of the
external distribution switch/circuit breaker before connecting or disconnecting the
48 V DC power cables. This is required because the “PowerCon” connectors are
not suitable for isolating current.
• This equipment has more than one power source, to reduce risk of electric shock
isolate all power supplies before servicing.
• High leakage current, Protective Earth connection essential before connecting
supply (see section 2.7.1).