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5

COMUNELLO

  ®Copyright 2019 - All rights reserved

1 WARNINGS

The LD100 is a single channel inductive loop 
detector. The use of microprocessor and surface 
mount technology enables a large number of 
functions to be incorporated into a small package. 
The LD100 is compatible with most single channel 
detectors on the market and is easy to set-up and 
install.
Typical applications in the parking and access 
control environments are safety loops, arming loops 
and entry or exit loops.

PRODUCT DESCRIPTION AND 

DESTINATION OF USE

Standard features of the detector are:

• Reset 

Switch.

 

Pressing the reset switch enables the detector to be manually reset during 
commissioning and testing. This results in the detector re-tuning the 
sensing loop and becoming ready for vehicle detection.

•  Switch selectable Sensitivity.
 

The detect sensitivity is the minimum change in inductance required to 
produce a detect output. (%ΔL/L) Eight sensitivity settings are available on 
the switches to allow flexibility in configuration.
1 High - 0.01% 5 - 0.2%
2 - 0.02% 6 - 0.5%
3 - 0.05% 7 - 1%
4 - 0.1% 8 Low - 2%

•  Switch selectable Frequency.
 

The frequency of the loop is determined by the inductance of the loop and 
the frequency switch setting. If the frequency switch is on, the frequency is 
reduced. It may be necessary to change the frequency to prevent cross-
talk between adjacent loops.

• Sensitivity 

Boost.

 

This feature sets the undetect level to maximum sensitivity and is used to 
prevent loss of detection of high-bed vehicles.

• Filter 

Option.

 

This option is used to provide a delay of 2 Seconds between detection of 
the vehicle and switching of the output relay.

  This delay is normally used to prevent false detection of small or fast 

moving objects.

•  Permanent Presence Option.
 

This feature ensures detection of the vehicle will be maintained when the 
vehicle is parked over the loop for extended periods.

•  Selectable Extend Time.
 

When switched on this feature extends the outputs for 2 Seconds.

•  Pulse Relay Selection.
 

The Pulse relay may be configured to energise on detection of a vehicle or 
when the vehicle leaves the loop.

•  Selectable Pulse Time.
 

This feature sets the length of time that the pulse relay will be energised for. 
1 Second or 0.2 Second.

• Power 

Indicator.

 

This LED Indicator illuminates when power is present.

• Detect 

Indicator.

  This LED Indicator is illuminated when there is a vehicle over the loop 

or the loop is faulty. This LED can also be used to determine the loop 
frequency. On reset, count the number of times the LED flashes. Multiply 
this number by 10KHz.For example: if the LED flashes 6 times, then the 
loop frequency is between 60KHz and 70KHz.

•  Loop Fault Indicator.
 

This LED Indicator is illuminated when the loop is either open circuit or 
short circuit and is used to give a visual indication of a faulty loop.

3 TECHNICAL  DATA

POWER 
REQUIREMENT:

LD100 200 - 260VAC 50Hz 1.5VA
LD101 100 - 120VAC 60Hz 1.5VA
LD102 11 - 26VAC/DC 50/60Hz 95mA max.

PRESENCE/PULSE 
RELAY :

0.5A/220VAC.

RESPONSE TIME:

Approximately 120ms after vehicle enters loop.

INDICATOR:

LED indicators show: Power ,Detect state and Loop 
Fault.

DETECTOR TUNING 
RANGE:

15 - 1500 uH.

PROTECTION:

Loop isolation transformer with lightning protection.

CONNECTOR:

11 Pin Connector on rear of unit.

DIMENSIONS:

80mm (height) X 40mm (width) X 79mm (Depth excl. 
connector).

4 SWITCH  SETTINGS

SWITCH SETTINGS

No.

FUNCTION

ON

OFF

10
7,8,9
7,8,9
7,8,9
7,8,9
7,8,9
7,8,9
7,8,9
7,8,9
6
5
4
3
2
1

EXTEND TIME
SENS 0.02%
SENS 0.01%
SENS 0.05%
SENS 0.1%
SENS 0.2%
SENS 0.5%
SENS 1%
SENS 2%
FREQUENCY
ASB
FILTER
PERM. PRESENCE
PULSE MODE
PULSE TIME

2SECS

-

S9
S8

S8/S9

S7

S7/S9
S7/S8

S7/S8/S9

LOW

ON

2SEC

ON

UNDET

1 SEC

OFF

S7/S8/S9

S7/S8
S7/S9

S7

S8/S9

S8
S9

-

HI

OFF
OFF
OFF
DET

0.2SEC

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