Sirius 800 Series User Manual
Powering Up the Sirius 800
Powering the Sirius 800 Routers 4.1
Iss 5 Rev 7
Page 49
© 2017 SAM
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Powering the Sirius 800 Routers
Before powering the router on ensure that the router has been installed in accordance with
the appropriate Sirius 800 Installation and Quick Start guide and local safety regulations.
4.1 Powering Up the Sirius 800
When power is connected to the Sirius 800, the controllers and fans switch on immediately.
The main signal modules within the Sirius 800 start to power up one second after the 48 V DC
supply has been switched on.
4.1.1 Power Sequencing
To reduce the inrush current when the whole unit is powered up the modules in the router
power up over a period of six seconds starting with the controllers and fans, and ending with
the audio crosspoints.
Important:
To avoid overloading the individual external power supply units, make sure that you power
them all up as quickly as possible and at least half of the power supply units within one
second of each other.
Note:
When hot plugging in a module to the Sirius 800, there is a delay before the module
powers up.
