304UM0001 Rev 00
PD160 Enhanced Series User Manual
Page: 21 of 39
Multiple sensitivity levels have been provided in the PD160 Enhanced Series Detector to cater for a
wide range of parking and vehicle access control applications. The detection of small unwanted
objects such as bicycles and trolleys may be eliminated by selecting lower sensitivity levels whilst high-
bed vehicles and vehicle/trailer combinations will not lose detection by using Automatic Sensitivity
Boost (ASB) option.
ASB operates as follows: When ASB is disabled, the un-detect level is dependent on the sensitivity
setting of the detector. Hence as the detector is made less sensitive, the un-detect level will reduce
accordingly. When the ASB is enabled the un-detect level is fixed irrespective of the sensitivity setting
and will be equivalent to the un-detect level when the sensitivity is on maximum setting.
4.3 Types of Output
Each relay output may be configured to be either a presence or pulse output. Refer to section 3.2.5 for
more information on how to set the outputs.
4.3.1 Presence Output
When a relay is configured as a presence output, it will produce a continuous output during the
presence of a vehicle over the inductive loop, or during the presence of a fault, depending on whether
configured as presence on detect or presence on fault from the relay menu. Default is presence on
detect and is used in the paragraphs below.
When the presence method is set to permanent, the relay will indicate vehicle presence for an
unlimited period of time. However on limited presence, the detect time will be dependant on the
change of inductance. The presence time on the limited presence setting will be approximately 1 hour
for a 1%
∆
L/L. Refer to section 3.2.4 for more information on presence methods.
The presence outputs are known as fail-safe outputs. This implies that in the event of a power failure
or loop failure the relays will produce detect outputs. By default on the PD160, relay1 is configured as
a presence output and so is a fail-safe output. (Fail-Secure outputs are available on request. MOQ
applies)
