Dräger Flame 3000 Instrucciones De Uso página 10

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Use
1. Fix the mounting bracket to the mounting location using 8 mm fastenings.
2. Orientate the Dräger Flame 3000 so that it provides the desired coverage
and securely fix in place. Ensure that it is orientated so that the status LED
and earthing stud are directly beneath the lens.
3.2.2 Electrical installation
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.
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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.
The flame detector can operate via a standard 3 or 4 wire termination and has
two types of alarm output available simultaneously:
– 4 – 20 mA
– Relay (alarm and fault)
The 4 – 20 mA signal outputs are as follows:
Event
Power/detector fault
Optical fault
Healthy condition
Alarm
Over-range
The internal connections of the alarm and fault relay contacts and jumpers are
shown below. Each field connection is also shown on this illustration for clarity.
The end-of-line and alarm resistances are to be calculated based on the
requirements of the control system.
Instructions for use
Output
0 mA
2 mA
4 mA
18 mA
21 mA
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Dräger Flame 3000