Churchill Nano Link IP67, Technical Manual, Page: 6 / 42

Page 4
2. Common Features
2.1 Mechanical
2.1.1 Housing
All modules (except the
Nano_Link IP67
) are housed in plastic cases, which can be
clipped onto either G or ‘top hat’ DIN rails. The housings measure 125mm H x
125mm W x 110mm D (when mounted on a vertical surface). All electrical
connections are made through two part screw terminals along the top and bottom
edges. Connections between modules and with other devices are made through FCC68
RJ11 and RJ45 jacks. No internal circuitry is accessible without removing the top
cover.
The top cover is retained by internal clips, and can be removed by inserting a fingernail
or screwdriver into the centre of the gap at each side of the cover and pulling outwards.
Some modules also have screws.
To unclip modules from ‘top hat’ rails on a vertical surface, press down on the top of
the module and lift it out from the bottom.
2.1.2 Nano_Link IP67
This is a form of mechanical housing that can be used
when
Nano_Link
has no ancillary equipment around it. It
is a lower cost option than a conventional unit in a
polycarbonate enclosure.
As shown in the illustration, a leased line unit can also
incorporate a surge protection unit. All variants can also
include any of the power supply options and a rotation
sensor.
A label is attached to the inside of the lid to show the I/O
connections. It also identifies the type of power supply
fitted, and can be used to identify the required DIPswitch
settings.
2.1.3 Polycarbonate Enclosures
A range of polycarbonate enclosures is available for applications requiring wall-mounting. They range in size from
190mm x 190mm x 135mm (suitable for a single module) up to 380mm x 560mm x 135mm (for up to 4 modules). The
smallest enclosure is rated IP68 (submersible for 24 hours to a depth of 2m), whilst all others are IP67 (resistance to
temporary submersion to a depth of 1m). The enclosures are fitted with DIN rails to which the unit can be clipped and a
cable to extend the aerial connector to a TNC aerial socket on the top of the enclosure. It is assumed that the user will
fit any glands needed to bring plant I/O into the enclosure.
It should be noted that the IP rating is dependent on the lid being screwed down tightly, and all glands being correctly
fitted and secured.
Larger systems can be supplied in steel enclosures if required.
PRESS DOWN
PULL OUT