Eaton ExResistTel, Operating Instructions Manual

Page: 47 / 105

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be used to screw the bracket securely onto to the housing floor (see
overview of the device on page 6). Thus, if the constructor wants to use
the metal bracket, the first thing he has to do, is to fix it to the housing
floor. Subsequently, the device may be mounted on the wall.
Intrinsically safe programming interface
An 8-pole, intrinsically safe contact strip ( 14 ) ( see overview of the device
on page 7) protrudes from the compound. This contact strip is
exclusively used by the manufacturer for programming purposes. Do not
switch any circuits by using the contact strip. The constructor may not
perform any kind of programming.
Intrinsically safe display interface
An 8-pole, intrinsically safe contact strip with a soldered-on circuit board
(
15 ) (see overview of the device on page 7) protrudes from the
compound. The circuit board is equipped with a zero power plug for
connecting the intrinsically safe LC display film conductor. Connect the
built-in display only to this interface.
Intrinsically safe strand connection to the built-in loudspeaker
An intrinsically safe 2-pole strand conductor ( 16 ) (see overview of the
device on page ) goes from the compound to the built-in loudspeaker.
The strand is soldered onto the circuit board below the compound, as
well as onto the loudspeaker.
Intrinsically safe strand connection to the reed switch
An intrinsically safe, 2-pole strand conductor ( 17 ) goes from the
compound to a circuit board with a reed switch (see overview of the
device on page 7). On the compound-covered circuit board the strand
runs underneath the compound, and on the other circuit board it is
soldered onto the reed switch.
Intrinsically safe keypad connection
An intrinsically safe, 14-pole ribbon cable with plug bush ( 7 ) comes out
of the compound. Prior to screwing the device parts together, connect
this plug bush with the 14-pole pin contact strip in the housing cover.