Electrical Installation - Dräger Flame 1500 Notice D'utilisation

en |
Mounting
The end-of-line and alarm resistances are to be calculated based on the
requirements of the control system.
CAUTION
Risk of damage to the device!
The flame detector must be properly grounded. Failure to do so may cause
electrical interference in the equipment.
Metric cable entries are fitted with an internal stop that results in the threads
being visible after assembly. Over-tightening may result in damage to both the
cable entry and the gland.
► Properly ground the flame detector.
► Do not over-tighten the cable glands.
A 2 m helix should be allowed in the flame detector cabling. This allows the
detector to be repositioned if local obstructions, such as pipework and cable
trays, block the detector's view of the local hazard.
12
3.4.2.1

Electrical installation

1. Isolate all associated power supplies. Ensure that they remain isolated until
required for commissioning.
2. Connect the enclosure earth stud to a local ground point.
3. Remove the blanking plug(s) from the enclosure gland entries.
4. Fit the cable gland to the enclosure. Ensure that it is fitted with a minimum of
five threads inside the enclosure and with the ingress protection seal
washer fitted at the bottom of the thread. Tighten the gland to a torque
between 15 - 20 Nm (11 - 15 lbf ft).
5. Loosen the set screw located in the rear enclosure cover. Unscrew and
remove the rear enclosure.
6. Connect the cabling to the terminals in one of the following configurations:
0 - 20 mA output (source non-isolated)
Pin Description
1 24 Vdc
2 0 Vdc
5 0 - 20 mA source
Instructions for use |
Flame 1500