Siemens SIREC DS 7ND4120 Series, User Manual

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43-TV-25-20 GLO Issue 4 01/02 UK 17
A5E00117351-04
Electrical
All connections to the unit are made via the rear panel.
Cables
To comply with CE Mark, all cables connected to the rear of the unit should use screened
cable terminated at both ends.
A.C. Power
A.C. supply is connected via the standard configuration IEC chassis plug on the rear
panel.
NB: For the panel cut-out sizes, See “Specifications” on page 6.
NB: The
SIREC DS
range is intended for panel-mount use and as such should be
considered as permanently connected. Disconnection from the supply MUST be
made possible by means of a switch, circuit breaker or other means of supply iso-
lation. The disconnection device must be included in the panel installation, clearly
marked, in close proximity to the equipment, and within easy reach of the operator.
In the case of portable equipment, the protective earth terminal must remain con-
nected (even if the recorder is isolated from the mains supply) if any of the ana-
logue, communications, or relay terminals are connected to hazardous voltage.
Processor/
Universal/
Ethernet card
External
earth point
Relay Alarm
card option
Ethernet
connection
A.C. mains filter
connector
ENSURE SAFETY EARTH CONNECTION
Always ensure the unit is connected to safety earth when connecting to a D.C. supply.
Failure to comply with these instructions could result in death or serious injury.
WARNING