User Manual

MDR5800 User Manual
862-01881 Issue 6 Page 18
and controlled. The outputs are used to indicate alarm or other states selected
by the operator via the NMS or a SNMP Management Station.
2.3.9 DC Power Input
This connector (socket) is used for power input to the IU. The connection is made
using 2-core cable. The cable is connected to a GREY connector, a plug. The
polarity-sense (labelled) must be observed and implemented.
2.3.10 Fuse Holder
This holder is used to hold a fuse (5A).
2.3.11 ON/OFF Switch
This switch is used to control power input to the Indoor Unit (and indirectly the
Outdoor Unit).
2.3.12 Ground Terminal
This is used to accept connection to an earth strap, terminated with a crimped earth
lug. Refer to the installation chapter for details on wire/earth lug requirements.