Comunello LD100 200 User manual

1
COMUNELLO ®Copyright 2019 - All rights reserved
AC - 240
INSTALLATION AND USER’S MANUAL
comunello.com
Inductive Sensor
Cod.91300158 - Rev. 01 - 27.06.19

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.
2 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 exibility in conguration.
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 congured 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 ashes. Multiply
this number by 10KHz.For example: if the LED ashes 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.
3TECHNICAL 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).
4SWITCH 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

6COMUNELLO ®Copyright 2019 - All rights reserved
5 DIAGNOSTICS
SYMPTOM POSSIBLE CAUSE SOLUTION
The POWER LED is
not on.
No power supply voltage
on the input.
Check that the power
supply is correctly wired
to the detector. (PINS 1
and 2)
The DETECT LED ashes
erratically.
There may be a poor
connection in the loop or
loop feeder.
The detector may be
experiencing crosstalk vith
the loop of an adjacent
detector.
Check all wiring. Tighten
screw terminals.
Check for broken wires.
Try changing frequencies
using the frequency
switch. Put the detector
with the larger loop onto
low frequency and the
detector with the smaller
loop onto high frequency.
The DETECT LED
randomly stays on.
Faulty loop or loop feeder
wiring.
Movement of the loop in
the ground.
Check the wiring. Tighten
screw terminals. Check
for pinched or bent wires.
Is the feeder wire twisted?
Check for cracks in the
road surface near the
loop.
The LOOP FAULT LED is
ashing.
The loop inductance is to
small or the loop is short
circuit.
Check that there is no
short circuit on the loop
feeder wiring or the loop.
If there is no short circuit
then the inductance is to
small and more turns of
wire should be added to
the loop.
The LOOP FAULT LED is
permanently illuminated.
The loop inductance is to
large or the loop is open
circuit.
Check that there is
electrical continuity on the
loop. This can be done
using a multimeter on the
ohms range (< 5 Ω). If
the loop inductance is to
large then try reducing the
number of turns.
6 WIRING DIAGRAM
7
LOOP INPUT
8
1
2 POWER INPUT
9
LD100 220VAC / LD101 110VAC
LD102 12-24VAC/DC
EARTH
LOOP
TWISTED
CABLE
5
10 11
3
4
PULSE RELAY
OUTPUT
PRESENCE RELAY
OUTPUT
6
7 RELAY FUNCTIONALITY
RELAYS VEHICLE
PRESENT NO VEHICLE LOOP FAULTY
NO
POWER
PRESENCE
RELAY
N/O CLOSED OPEN CLOSED CLOSED
N/C OPEN CLOSED OPEN OPEN
PULSE
RELAY
N/O PULSE
CLOSED OPEN OPEN OPEN
N/C PULSE
OPEN CLOSED CLOSED CLOSED
8 INSTALLATION GUIDE
• The detector should be installed in a waterproof housing as close to the
loop as possible.
• The loop and feeder should be made from insulated copper wire with a
minimum cross-sectional area of 1.5mm2. The feeder should be twisted
with at least 20 turns per metre. Joints in the wire are not recommended
and must be soldered and made waterproof. Faulty joints could lead to
incorrect operation of the detector. Feeders which may pick up electrical
noise should use screened cable, with the screen earthed at the detector.
• The loop should be either square or rectangular in shape with a minimum
distance of 1 metre between opposite sides. Normally 3 turns of wire
are used in the loop. Large loops with a circumference of greater than
10 metres should use 2 turns while small loops with a circumference of
less than 6 metres should use 4 turns. When two loops are used in close
proximity to each other it is recommended that 3 turns are used in one and
4 turns in the other to prevent cross-talk.
• Cross-talk is a term used to describe the interference between two
adjacent loops. To avoid incorrect operation of the detector, the loops
should be at least 2 metres apart and on different frequency settings.
• For loop installation, slots should be cut in the road using a masonry
cutting tool. A 45o cut should be made across the corners to prevent
damage to the wire on the corners. The slot should be about 4mm wide
and 30mm to 50mm deep. Remember to extend the slot from one of the
corners to the road-side to accommodate the feeder.
• Best results are obtained when a single length of wire is used with no
joints. This may be achieved by running the wire from the detector to the
loop, around the loop for 3 turns and then back to the detector.
The feeder portion of the wire is then twisted. Remember that twisting the
feeder will shorten its length, so ensure a long enough feeder wire is used.
• After the loop and feeder wires have been placed in the slot, the slot is
lled with an epoxy compound or bitumen ller.
300mm 300mm
1M
ROAD
EDGE
45OCROSSCUT FEEDER
TRAFFIC DIRECTION
4m
m
ROAD SURFACE
30-50 mm
SLOT
SEALANT WIRES
9 INDUCTIVE SENSOR - DETECTOR OF
METAL MASSES
The AC - 240 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 AC - 240 is compatible
with most single channel detectors on the market and is easy to set-up and
install.
Typical applications are: parking area and access control environments with
safety loops, arming loops and entry or exit loops.
Standard features of the detector are:
DIP-SWITCH no. 10: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.
DIP-SWITCESH no. 7-8-9. Switches of selectable Sensitivity.
Eight sensitivity settings are available on the switches to allow exibility in
conguration.
SENSIBILITY DIP 9 DIP 8 DIP 7 SENSIBILITY DIP 9 DIP 8 DIP 7
0,02 % OFF OFF OFF 0,2 % OFF OFF ON
0,01 % ON OFF OFF 0,5 % ON OFF ON
0,05 % OFF ON OFF 1 % OFF ON ON
0,1 % ON ON OFF 2 % ON ON ON
DIP-SWITCH n° 6: 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.
DIP-SWITCH no. 5: Sensitivity Boost.
This feature sets the undetect level to maximum sensitivity and is used to
prevent loss of detection of high-bed vehicles.

7
COMUNELLO ®Copyright 2019 - All rights reserved
DIP-SWITCH no. 4: 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.
DIP-SWITCH no.3: 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.
DIP-SWITCH n° 2: Pulse Relay Selection.
The Pulse relay may be congured to energise on detection of a vehicle or
when the vehicle leaves the loop.
DIP-SWITCH n° 1: Selectable Pulse Time.
This feature sets the length of time that the pulse relay will be energised for. 1
Second or 0.2 Second.
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.
TECHNICAL DATA:
Alimentation AC-240 200-260VAC (+/- 15%) 50Hz
Presence/pulse relay: 0,5 A / 220 VAC
Indicator: LED indicators show: Power ,Detect state
and Loop Fault.
Detector tuning range: 15-1500uH
Protection: Loop isolation transformer with lightning
protection.
Connector: 11 Pin Connector on rear of unit.
10 WIRING DIAGRAM
1
230 VAC PULSE
RELAY
PRESENCE
RELAY
COPPER
COIL
2
FN
34567891011
11 INSTALLATION GUIDE
The detector should be installed in a waterproof housing as close to the loop
as possible.
The loop and feeder should be made from insulated copper wire with a
minimum cross-sectional area of 1.5mm2. The feeder should be twisted with
at least 20 turns per metre. Joints in the wire are not recommended and
must be soldered and made waterproof. Faulty joints could lead to incorrect
operation of the detector. Feeders which may pick up electrical noise should
use screened cable, with the screen earthed at the detector.
The loop should be either square or rectangular in shape with a minimum
distance of 1 metre between opposite sides. Normally 3 turns of wire are
used in the loop. Large loops with a circumference of greater than 10 metres
should use 2 turns while small loops with a circumference of less than 6
metres should use 4 turns. When two loops are used in close proximity to
each other it is recommended that 3 turns are used in one and 4 turns in the
other to prevent cross-talk.
Cross-talk is a term used to describe the interference between two adjacent
loops. To avoid incorrect operation of the detector, the loops should be at
least 2 metres apart and on different frequency settings.
For loop installation, slots should be cut in the road using a masonry cutting
tool. A 45o cut should be made across the corners to prevent damage to
the wire on the corners. The slot should be about 4mm wide and 30mm to
50mm deep. Remember to extend the slot from one of the corners to the
road-side to accommodate the feeder.
Best results are obtained when a single length of wire is used with no joints.
This may be achieved by running the wire from the detector to the loop,
around the loop for 3 turns and then back to the detector.
The feeder portion of the wire is then twisted. Remember that twisting the
feeder will shorten its length, so ensure a long enough feeder wire is used.
After the loop and feeder wires have been placed in the slot, the slot is lled
with an epoxy compound or bitumen ller.
300mm 300mm
1M
45O
TRAFFIC DIRECTION
4m
m
EPOXYDE RESIN OR BITUMEN
30-50 mm