Sam Sirius 830, Installation And Quick Start Manual

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Sirius 830 Installation Manual www.s-a-m.com Warnings and Precautions
Issue 2 Rev 2 Page 11 © 2016 SAM
2.7 Earth Cables
2.7.1 Important Protective Earth Information
Due to the high leakage current, ensure that all of the power supply shelves are grounded to
the protective earth. Earth studs are provided on the rear of each power supply shelf for this
purpose. These studs have M6 size nuts, and are suitable to take an eyelet crimp.
2.7.2 Important Functional Earth Information
Up to two earth cables (636027) are supplied with the Sirius 830 depending on how many
power supply shelves are fitted. One should be fitted from each power supply shelf to the
Sirius 830 router frame, this is called a Functional Earth.
Fig 1. PSU Shelf Rear Panel
Functional Earth
Point, see
section 2.7.2
PowerCon AC Input
Connectors x4
48 Vdc power
connectors Protective Earth
Point, see
section 2.7.1
25-Way D Type
Alarms Connector
Note:
• The Protective earth is indicated on the power supply shelf by this symbol:
(located on the right side of the power supply shelf, see Fig 1.).
• Protective Earthing is a conductor in the building installation wiring, or in the power
supply cord, connecting a main protective earthing terminal to an earth point in the
building installation.
PROTECTIVE EARTH
• The building installation must provide a means for connection to the protective
earth and the equipment must be connected to that means.
• A service person must check that the socket outlets that the equipment is to be
powered from provide a connection to the protective earth. If not the service person
must arrange for the installation of the protective earth wire in the building.
Warning
High leakage current; the Protective Earth connection is essential before connecting the
supply.
Note:
• The Functional Earth on the power supply shelf is indicated by this symbol:
(located on the left side of the power supply shelf, see Fig 1.).
• Functional Earthing is the earthing of a point on the equipment or system, which is
necessary for purposes other than safety.
Warning
The Functional Earth cable from the power supply shelf to the Sirius frame must be fitted.