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Relay Output Board Option Hydrastep 2468CB and 2468CD Manual
3a-4 24685034
3a.2.2.1 Fitting the Nylon Spacers to the Relay Output Board
The spacers fit into the holes within the white-bordered areas on the output board (see
Figure 3a.1 on page 3a-6).
1. Fit the nylon spacers into their prepared holes on
the output board and lock in position using the nylon
washer and M4 nut, see inset diagram.
2. Fit the output board on to the spacers and check for
correct alignment and adjust if necessary.
3a.2.2.2 Mounting the Relay Output Board on to the Input Board
WARNING Mains voltages are present in this instrument when power
is connected. De-energise before opening front cover.
This task can be performed on a mounted 2468 electronic enclosure or the enclosure can be
removed to a bench for the installation. Here it is assumed that the enclosure is in its normal
working location. The procedure for mounting the relay output board is as follows:
1. Isolate the power supply from the 2468 electronic enclosure and open the instrument
front cover.
2. If two output boards are to be fitted, make sure that the first output board to be fitted has
had its nylon spacers fitted before installation. Also ensure the first output board is fully
configured before fitting the second output board.
3. Ease the pins of the Berg plug PL1 of the output board into the Berg socket SK1 on the
input board, checking that the mounting holes on the output board (the holes which are
not contained in white bordered areas) are aligned over the fitted spacers and gently
press the output board ‘home’ until the spring-loaded spigot on each spacer is locked
firmly on to the output board.
Note: When fitting a second output board, use the same procedure described in operation 3
but refer to the components, etc., on the mounted output board.
This concludes the mechanical installation of the output board(s) and should be followed by
the electrical installation. If the latter is not to be carried out in the immediate future then the
power supply can be reconnected.