Dräger Junction Box Ex d Instrucciones De Montaje página 8

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Connection to transmitters
Option
Mounting to a bar or beam
Mounting in a pipe/duct
For PIR 7x00 sensors:
● Mount the housing of the Junction Box Ex d on the mounting spacer
(Fig. D).
2. Ground the housing using the grounding screw. (Fig. A1).
3. Unscrew the lid.
4. Screw in the sensor (at least 5 rotations and 266 LB IN. / 30 Nm).
5. Observe the preferred position of the sensor (Fig. A2).
For PIR 7x00 sensors (Fig. A2a):
● The "Dräger" lettering on the splash guard must read horizontally.
A deviation from the horizontal of ±30° maximum is permissible.
6. Connect the sensor plug to the socket of the cable harness (Y) (Fig. B1).
● In case of DD/DQ CatEx sensors, twist the sensor cables with
7 rotations (Fig. B2).
7. Feed the field wiring through the cable entry and connect it to terminal (Y).
In case of 3-core field wiring:
● Install screw bridges between contacts 1a/1b and 3a/3b of the terminals.
(Fig. C).
8. Attach the lid and tighten it (≥44 LB IN. / ≥5 Nm) (Fig. E).
9. Tighten the locking screw (≥ 8 LB IN. / ≥ 0.7 Nm) (Fig. E).
10. Close unused housing openings with screw plugs.
11. Tighten all cable entries and screw plugs (at least 5 rotations and 266 LB IN.
/ 30 Nm).
4 Connection to transmitters
4.1 Connecting the Junction Box Ex d to
®
Polytron transmitters
1. Screw the cable harness (X) into the Polytron
8
Mount kit 4544198
Duct mount kit 6812725
For PIR 7x00 6812300
®
enclosure (Fig. F1).
2. Feed the field wiring through the cable entry and connect it to terminal (X)
(Fig. G).
In case of 3-wire field wiring:
● Install screw bridges between contacts 1a/1b and 3a/3b of the terminals.
(Fig. C).
3. Connect the cable shield to one of the two the grounding screws inside of
the transmitter (Fig. G1).
4. Connect the plug of the cable harness to the socket of the PCB unit.
5. Attach the lid and tighten it (≥44 LB IN. / ≥5 Nm) (Fig. E).
6. Tighten the set screw (≥ 8 LB IN. / ≥0.7 Nm) (Fig. E).
7. Close unused housing openings with screw plugs.
8. Tighten all cable entries and screw plugs (at least 5 rotations and 266 LB IN.
/ 30 Nm).
4.2 Connecting the Junction Box Ex d to
PointGard
For the connection to PointGard, the transmitter cable harness (X) is not
required. It can be disposed of professionally or returned to Dräger.
1. Feed the field wiring through the cable entry and connect it to the remote
CatEx sensor connection (Fig. G).
In case of 3-core field wiring:
● Use double ferrules (Fig. I).
2. Close PointGard, see the instructions for use of the transmitter.
5 Connection to control units
For the connection to control units (e.g., REGARD), install Junction Box Ex d
(see "Installation", page 7) and connect the field wiring to the control unit (see
the instructions for use of the control unit).
1) Included in the scope of delivery of Gard 3200 CAT Remote
Assembly instructions
1)
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Junction Box Ex d