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Cod. +030221881 rel. 1.0 - 11/02/2000
10
,167$//$7,21
The installation operations for the plug-in controls can be grouped as follows:
1. mechanical installation;
2. electrical connections: probes, power supply and actuators;
3. setting of the operating parameters.
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1. Insert the instrument in the previously created hole as per the drilling template, 71x29 mm;
2. for mounting using the bracket (for all
(FR versions): lock the instrument onto the panel, by sliding the bracket;
3. for mounting using screws from the front panel (only for the
7RS versions): rest the instrument on the front panel and, using the
screwdriver tighten the two screws, making sure the two teeth are properly clicked in. The following describes the procedure
in detail. The thickness of the fastening panel must not exceed 3 mm;
3.1 remove the front panel frame and check that the two attachment teeth are in their slot (they must not protrude from the
dimensions of the drilling template). If necessary, unscrew the two screws, applying pressure. Do not unscrew too
much, the screw must not be raised from the front panel;
3.2 connect all the cables to the corresponding terminals or insert the pre-wired removable terminals onto the
corresponding connectors;
3.3 insert the instrument in the hole in the panel, placing the connected cables inside, and hold it in position by pressing in
the centre of the front panel; using the screwdriver , tighten the lower screw 90°, the tooth must come out of its slot
and click onto the panel, then tighten up until the front panel is secure;
3.4 repeat the same operation for the upper screw;
3.5 if the tooth does not click onto the panel (max. thickness 3.0 mm), unscrew the screw, applying pressure at the same
time with the screwdriver so that the tooth moves back. As mentioned in point 1, do not unscrew too much, the head of
the screw must not be raised from the surface of the front panel;
3.6 the two screws must be tightened with the same pressure, so as to not leave one corner higher than the other. DO NOT
tighten excessively,
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3.7 apply the front panel frame.
4. If having to remove the instrument, proceed as follows:
4.1 unclip the front panel frame;
4.2 unscrew the lower screw, at the moment the front panel leaves the panel keep pressure on the screw and unscrew a
further 90° to make the tooth go back into its slot;
4.3 repeat for the upper screw;
4.4 remove the instrument from panel, keeping it horizontal;
:$51,1*6the screwdriver which should be used is the Pozidriv 1 (PZD1) Phillips head screwdriver. 'RQRWXVHPRWRULVHG
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The instruments in the PJ32 series feature different terminals for the connections:
•
the Eco versions use the traditional fixed screw terminals;
•
the Top versions, on the other hand, feature removable terminals with two types of cable connection blocks: screw, or by
crimping.
The versions with removable terminals offer considerably simplified connection of the instrument, both for installation and
maintenance. Furthermore, connection errors are avoided, as the three connection blocks have a different number of pins.
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The plug-in instruments are connected to the power supply using terminals 8 and 9 in the Eco versions, or with the two-way
removable block to be inserted in the terminals 8 and 9 for the Top versions.
The voltage supplied to these terminals must correspond, within the tolerance indicated, to the value on the instrument’s connection
label. The values are 230Vac, 115Vac and 12Vac/Vdc, according to the code.
The electrical insulation featured in the instrument, for the versions with mains power supply (230Vac and 115Vac), corresponds
to reinforced insulation. The versions with 12Vac/Vdc power supply do not feature insulation.
To guarantee correct operation during voltage drops, all the plug-in instruments feature low power operation: below a certain
threshold the current supplied to the display is gradually reduced, up to the total switching off of the display and LEDs. All the
other functions are guaranteed within the maximum allowed voltage drop limits; in particular, the status of the relay is maintained.
On return of the normal power supply conditions, the display and the LED are reset.
Summary of Contents for plug-in PJ32C
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