Nice LP21 Operating instructions

User, installation and
safety instructions
Nice
LP21
EN
5 - OUTPUTS AND LED INDICATORS
5.1 - Status of the relay contacts
The following table shows the location of the relay contacts depending on the status of the detec-
tor (see table 4).
Table 4
Detector status Presence relay Pulse relay
Free loop closed open open
Occupied loop open closed open
Loop is now free closed open 200 ms pulse
Loop fault open closed open
Tension is off closed closed open
In the event of loop faults, the detector will cyclically check the status of the loop and will automati-
cally resume normal operation after the problem has been solved.
- Warning! On the card there are components which are sensitive to static energy.
When working with the device open, appropriate precautions are required. Do not touch
the components or conductors! The warranty will be nullied for damages caused by im-
proper handling!
5.2 - LED indicators
The green LED indicates that the detector is ready for operation. The red LED, depending on the
occupation status of the loop, indicates the activation of the relay output (see table 5).
Table 5
Green LED
loop control
Red LED
loop status
Detector status
Off Off No power voltage
Flashing light Off Frequency indication or adjustment
On Off The detector is ready, free loop
On On The detector is ready, occupied loop
Off On Loop fault
5.3 - Loop frequency indication
About 1 s after the adjustment of the detector, the frequency of the loop is shown by the ashing
green LED signal. First of all, the 10 kHz location of the frequency value will be displayed. For each
frequency value of 10 kHz, the green LED of the detector channel will ash once. After 1 sec. the 1
kHz position will be displayed in the same manner. If the value at the position of 1 kHz is ‘0’ the LED
will ash 10 times. The 1 kHz position ashes are slightly shorter than the 10 kHz position ashes.
Example of 57 kHz loop frequency:
Tens Units
1 s
5x 10 kHz 7x 1 kHz
6 - ELECTRICAL CONNECTIONS
- Warning!
– Incorrect connections can cause faults or hazards; therefore ensure that the specied
connections are strictly observed and performed by experienced and qualied person-
nel.
– Hook up the unit with the electrical power shut off.
24V0V 28
1516 25
~/=V42
DNG/V0
r
h
s
5'/oo
/
VEK M1H
Sensitivity
Delay
Relay operating principle
High frequency
Low frequency
Continuous signal Pulse signal
7 - DISPOSAL OF THE PRODUCT
This product constitutes an integral part of the automation system, therefore it must be
disposed of together with it. As in installation, also at the end of product lifetime, the disas-
sembly and scrapping operations must be performed by qualied personnel. This product is made
up of different types of material, some of which can be recycled while others must be disposed
of. Seek information on the recycling and disposal systems envisaged by the local regulations in
your area for this product category. – Some parts of the product may contain polluting
or hazardous substances which, if disposed of into the environment, constitute serious
environmental and health risks.
As indicated by the symbol, the product may not be disposed of as domestic waste. Sort
the materials for disposal, according to the methods envisaged by current legislation in
your area, or return the product to the retailer when purchasing an equivalent product.
- Local legislation may include the application of serious nes in the event of
improper disposal of this product.
8 - TECHNICAL SPECIFICATIONS
Note: • All technical specifications stated herein refer to an ambient temperature of 20° C (± 5° C). • Nice S.p.A.
reserves the right to apply modifications to products at any time when deemed necessary, maintaining the same
intended use and functionality.
• Dimensions: 79 x 22.5 x 90 mm (H x W x L without plug) • Protection type: IP40 • Power
supply: 24 V / ±10 % max.1.5 W • Operation temperature: -20°C to +70°C • Air humid-
ity: max 95% with no condensation • Loop inductivity: 25-800 μH, recommended 100-300 uH
• Frequency range: 26-130 kHz in 2 steps • Sensitivity: from 0.01% to 0.64% (Δf/f) in 4 levels
- from 0.02% to 1.3% (ΔL/L) • Delay: 5 min or uninterrupted • Electric power line of the loop:
max. 250 m • Loop resistance: max. 20 Ohm (including power line) • Relay: 250 mA / 24 V /
(min.1 mA/5 V) • Energise delay: normally 100 ms • Signal duration: > 200 ms • De-ener-
gise delay: normally 40 ms • Connection: Screw terminals (power supply, relay) – Snap-on ter-
minal clamps (loops connection)
www.niceforyou.com
Nice S.p.A.
Via Pezza Alta, 13
31046 Oderzo TV Italy
[email protected]
IS0425A00MM_04-11-2016

1 - GENERAL WARNINGS: SAFETY - INSTALLATION - USE
(Instructions translated from Italian)
CAUTION Important safety instructions. Follow all instructions as improper instal-
lation may cause serious damage
CAUTION Important safety instructions. It is important for you to comply with these
instructions for your own and other people's safety. Keep these instruc-
tions
•Before commencing the installation, check the “Product technical specications”, in particular
whether this product is suitable for automating your guided part. If it is not suitable, DO NOT
continue with the installation
•Before proceeding with the installation of the product, check that all materials are in good work-
ing order and suited to the intended applications
•The product is not intended for use by persons (including children) with reduced physical, sen-
sory or mental capacities, nor by anyone with insufcient experience or familiarity
•Children must not play with the appliance
•Do not allow children to play with the control devices of the product
CAUTION In order to avoid any danger from inadvertent resetting of the thermal cut-off de-
vice, this appliance must not be powered through an external switching device,
such as a timer, or connected to a supply that is regularly powered or switched
off by the circuit
•Provide a disconnection device (not supplied) in the plant’s mains power supply, with a contact
opening distance that permits complete disconnection under the conditions dictated by over-
voltage category III
•Handle the product with care during installation, taking care to avoid crushing, denting or drop-
ping it, or allowing contact with liquids of any kind. Keep the product away from sources of heat
and naked ames. Failure to observe the above can damage the product, and increase the
risk of danger or malfunction. If this should happen, stop installation immediately and contact
Customer Service
•The manufacturer assumes no liability for damage to property, items or persons resulting from
non-compliance with the assembly instructions. In such cases the warranty for material defects
is excluded
•Before working on the system (maintenance, cleaning), always disconnect the product from the
mains power supply
•The packing materials of the product must be disposed of in compliance with local regulations
•If the product is damaged do not try to x it and please contact the Service Centre
2 - PRODUCT DESCRIPTION AND INTENDED USE
• Barrier controls
• Gate and door controls
• Parking and trafc managing
- Warning! All uses other than the described use and use in environmental conditions
other than those indicated in this manual should be considered improper and forbidden!
3 - FUNCTIONAL SPECIFICATIONS
The LP21 inductive loop detector is a system used for detecting vehi-
cles by means of inductive loops with the following characteristics:
• Galvanic isolation between loop and electronic parts of the detector
• Automatic adjustment of the system after power up
• Continuous balancing of frequency drift
• Suitable for monitoring individual parking spaces
• Sensitivity can be set regardless of the loop inductivity
• Occupied loop message reported by the LED indicator
• Relay 0V contacts for continuous signal and pulse signal
• Output pulse signal from the loop
• Indication of the loop frequency via LED
• Loop connection available for Diagnostics
In the design and installation of inductive loops,
you should take into consideration the table
opposite.
A normal insulated copper wire, preferably with a
cross-section of 1.5 mm2, can be used to create
the loop.
Lay the cable,with the number of windings indi-
cated in the table. The two cable ends must be
intertwined (at least 20 times per meter) from the
loop to the detector.
Table
Loop perimeter number of windings
less than 3 m.
6
from 3 to 4 m. 5
from 4 to 6 m. 4
from 6 to 12 m. 3
over 12 m. 2
4 - PROGRAMMING
4.1 - Sensitivity
The sensitivity setting determines the change in frequency that a vehicle must cause in order to
use the output of the detector. The sensitivity setting can be adjusted on 4 levels by means of the
two DIP Switch ‘s’ located in the front part of the loop detector (see table 1).
Table 1
Sensitivity level “s” DIP Switch
1 low (0.64 % Δf/f)
2 (0.16 % Δf/f)
3 (0.04 % Δf/f)
4 high (0.01 % Δ f/f)
4.2 - Delay and reset
The delay can be set with the ‘h’ DIP Switch.
After the delay time has elapsed, a message indicating “loop unoccupied” is displayed and a new
recalibration of the loop is started automatically. The delay starts when the loop is occupied (see
table 2).
Table 2
Delay “h” DIP Switch
5 minutes
5 '
5 '/
Uninterrupted
5 '
5 '/
When switching on the power supply voltage, the detector will adjust the loop frequency. If there
are brief outages in voltage (< 0.1 s), no new adjustment will take place.
A reset with a new adjustment can be activated manually by changing the delay time.
4.3 - Operating principle of the presence relays
The presence signal and the pulse signal of the detector are both provided with a 0V contact relay.
The operating principle of the relay for the presence signal can be selected with the ‘r’ DIP Switch
(see table 3).
Table 3
Delay “r” DIP Switch
When the signal is sent, the relay coil is energised and the con-
tact opens
When the signal is sent, the relay coil is de-energised and the
contact closes
4.4 - Frequency setting
The operating frequency of the detector can be set at 2 levels on the 3-pole front terminal block.
The permitted frequency range is between 30 kHz and 130 kHz. The frequency depends on the
chosen frequency level, and the inductivity resulting from the geometry of the loop, the number of
windings on the loop and the loop's power supply line.
up = high frequency down = low frequency
Installation examples
Roadway
2m
1m
1
Roadway
0,8m
0,8m
2m
2m
2
Roadway
Gate
1m 1m
1m >1m
3
Roadway
BA
CD
4
5-8mm
A
B
D
C
30-50mm
5
Fig. 1 - Recommended for cars, lorries, buses
Fig. 2 - Recommended for motorbikes and bicycles
Fig. 3 - Applications requiring low sensitivity at the side
Fig. 4 - (A) Floor (B) Twisted wire (C) Groove (D) Loops
Fig. 5 - (A) Sealant (B) Groove (C) Twine (D) Loops