Loop Detector Settings
in
Parking and access control equipment manufactured in the UK
Automatic Sliding Gates
21
3.2.2 Sensitivity
The sensitivity of the detector allows the detector to be selective as to the change of inductance
necessary to produce a detect. There are four sensitivity selections and are set as follows: -
SW4 SW3
Off
Off
High
On
Off
Medium-High
Off OnM
edium-Low
On
On
Low
3.2.3 Automatic Sensitivity Boost
Automatic sensitivity boost is a mode which alters the undetect level of the detector. This mode is
selected by switch No. 5 on the front of the enclosure and is as follows: -
SW5
Off
Disabled
On
Enabled
Automatic sensitivity boost causes the sensitivity level to be boosted to a maximum on detection of
a vehicle, irrespective of current sensitivity level and maintained at this level during the entire
presence of the vehicle over the loop. When the vehicle leaves the loop and the detection is lost,
the sensitivity level reverts to the pre-selected level.
3.2.4 Filter Mode
The filter mode is selected with the mode switch No. 6. The filter produces a delay turn-on time of
two seconds when a vehicle occupies the loop. This is to enable small, unwanted objects to pass
over the loop without being detected. The filter option may be used on any sensitivity setting and is
selected as follows: -
SW6
Off
Disabled
On
Enabled
3.2.5 Pulse Relay
The pulse relay may be made to operate on detect (entry) or on undetect (exit) of a vehicle. This
option is selected with Switch No. 7 and is configured as follows: -
SW7
Off
Pulse on Detect
On
Pulse on undetect
3.2.6 Presence Time
The presence time may be set to permanent presence or to limited presence. In permanent
presence mode the detector will continuously compensate for all environmental changes whilst
there is a vehicle present over the loop, The presence mode is set with switch No. 8 and is
configured as follows: -
SW8
Off
Limited Presence
On
Permanent Presence
