ERNITEC Eagle PIR-100, Руководство по установке

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Installation and Maintenance
1 Introduction
The PIR is a highly sensitive Passive Infrared Detector designed for detection outdoors with a narrow, curtain-
shaped differential field of view. It incorporates microprocessor-controlled signal processing including signal shape
analysis, adaptive threshold level by feedback of environmental effects, temperature compensation and rejection of
disturbance signals.
Sensitivity adjustments are done with DIP-Switches for each individual unit in function of the required detection
range in order to adapt to the specific needs of an installation.
In addition to the hardware settings, adjustments can be made in a two way communication mode and signals
displayed on a PC screen by using the optional installation software and RS 485 communication interface module.
2 Mounting and Installation
The mounting structure should be stiff enough and resist to significant deflections in windy conditions. Movement of
the PIR caused by vibrations or other movements will result in swings of the field of view covered by the PIR and
could cause disturbance signals. These unwanted signals may lead to an increase of the alarm threshold level
which reduces the detection probability or in certain cases can lead to unwanted alarms.
The stainless steel bracket is ideally suited for wall mounting (using screws). For pole mounting the original
accessory ZA P-L1 is available (pole mounting bracket with two strap bands for poles of 4 – 16 cm diameter). For
further information please refer to
16.2.
•
It is very important that the cover of the detector is securely tightened. It must be tightened with the two
screws to the point where it cannot be closed further with reasonable force. There will then be hardly any gap
between the cover and the bottom part of the housing (considerably less than 1 mm).
The detectors are fitted with two cable entry assemblies of M16. The nut on the cable entry assembly should be
tightened to clamp the cable in place with reasonable force. If the cable diameter is too small to be held properly,
insulation tape should be wound around the cable to increase the outside diameter to a suitable size.
3 Connecting the PIR
For the definition of the electronic board and terminal block see appendix 19.1.
Alarm Signalling
There are three types of alarm signalling from the PIR:
•
one SPST potential-free relay contact
•
one open collector transistor output
•
an RS 485 two way communication link (see appendix 20 for details)
With the detector in factory setting the relay contact opens and the transistor switches to low resistance on alarm.
Output logic and function can be changed using the installation software.
During turn-on time the relay output is in alarm state!
Cover Switch
To detect attempts to open the detector, a switch is fitted for the cover. Its contact opens when the cover is opened.