VESDA by Xtralis
VESDA Sensepoint XCL
– Large Bore Quick Start Guide
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3.
Turn over the detector module and locate the terminal blocks on the back. Remove the terminal
blocks, pulling them toward the centre of the module.
4.
Connect the cable to the appropriate terminal block, referring to section 3 depending on the version.
Strip and insert the end of each wire into the corresponding terminal hole, and tighten the terminal
screw, using a flat-blade terminal screwdriver until the wire is secured.
5.
Replace the terminal blocks in their correct positions.
4.4
Ground Connections
Effective grounding is crucial to ensure stable Modbus communications and to limit the effects of radio
frequency interference. Ground points are provided inside the back box. In order to prevent false readings or
alarms as a result of ground loops, ensure that the shield of all cables is grounded at a single point,
preferably at the controller.
Note:
Any earth regime must avoid earth loops.
4.5
Securing Detector Module and Flow Cap
1.
Position the detector module with the Flow Cap onto the back box ensuring that the Status Indicator is
in the top left-hand corner when viewed from the front.
2.
Tighten the four retaining screws using a No. 2 Phillips screwdriver to secure.
3.
Where used, tighten the sealing nut of the cable gland to secure the cable. Refer to the cable gland
manufacturer’s instructions.
