VEGA Housing type 506 - Manual (Page 6)

6 Housing type 506
Mounting
2 Mounting
2.1 General
The housing type 506 can be screwed di-
rectly on a mounting plate (see "Dimensions,
holes") or placed on a carrier rail (35 x 15
acc. to EN 50 022). To do this, it is necessary
to loosen the two screws on the front of the
housing and to remove the upper part of the
housing from the socket.
For placing on carrier rail or loosening from
the carrier rail, unlock the holding strap with a
screwdriver in the lower rectangular opening
of the socket.
Wire the terminals acc. to the connection plan
(see either "3 Electrical connection", or the
operating instructions of the signal condition-
ing instrument to be installed, or the separa-
tor).
The designations of the terminals correspond
to those on the multipoint connector on the
rear of the signal conditioning instrument. The
exceptions are the sensor connection termi-
nals, see "3 Electrical connection".
Holding strap (orange)
2.2 Coding with Ex-instruments
To avoid a not-Ex-instrument being inserted
into the housing instead of the separator, the
right multipoint connector of the housing is
provided with a coded pin (position c23). A
hole is provided in the appropriate position
on the multiple plug of the VEGATRENN 547V
Ex and 548V Ex separators.
2.3 Transparent cover
The module units can be provided with a
lockable transparent cover to avoid unauthor-
ised adjustment.
The transparent covers are supplied along
with the module units.
2.4 Retrofitting of the housing with a
power supply unit
Please proceed as follows to retrofit a power
supply unit:
- First of all make sure that the supply volt-
age is disconnected on the terminal strips
of the socket!
- Loosen the two hold screws on the front of
the housing and remove the upper part of
the housing (the hold screws are only
accessible when there is no module card in
the housing).
- Shift the power supply board into the guide
rails of the upper part of the housing. Note
the position of the connection plug.