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7.3
Alarm module fitting or replacement
A standard 9372-FB enclosure is supplied with the Alarm module fitted and it is
normally connected to Spur 6.
The alarm module, when supplied as a separate item, is ready wired with two
connectors, a (2-wire) blue connector for the fieldbus 'Spur' connection and a
black (3-wire) connector for the 'Alarm' signals from the barriers.
Figure 7.1 - Alarm module wiring connections
It is permitted for the alarm module to be removed or installed while the
enclosure is powered because all its connections are rated "intrinsically
safe".
7.3.1
To remove the alarm module:
1. Loosen the two captive securing screws on the blue (spur) connector and
extract the connector - repeat for the black (alarm) connector.
2. Loosen the two captive securing screws on the alarm module and lift it away
from the circuit board complete with its wiring and connectors.
7.3.2
To install an alarm module:
The carrier circuit board is designed to provide a mounting for the alarm
module beside the Spur 6 connection. Two threaded bosses are provided in the
carrier circuit board to mount the module.
Do not exceed 0.4Nm when tightening the following securing screws.
1. Locate the alarm module over the threaded connections on the carrier circuit
board and use the captive securing screws to attach the module to the
carrier.
2. Insert the blue (2-wire) connector into the Spur 6 socket on the carrier
(removing any existing connector first) and tighten the two securing screws.
3. Insert the black connector into the Alarm socket on the carrier (removing any
existing connector first) and tighten the two securing screws.
NOTE
CAUTION
INM 9370-RD Rev 5
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