METALDEC
04.02.2011
ZVL504.00
CARDIN ELETTRONICA spa
Via Raffaello, 36- 31020 San Vendemiano (TV) Italy
Tel.:
(+39) 04 38 40 40 11 - 40 18 18
Fax:
(+39) 04 38 40 18 31
e-mail (Italy):
e-mail (Europe):
http: www.cardin.it
REMARKS
These instructions are aimed at professionally qualified "
installers of electrical equip-
ment
" and must respect the local standards and regulations in force. The use and
installation of these appliances must rigorously respect the indications supplied by the
manufacturer and the safety standards and regulations in force.
Attention! Only for EU customers - WEEE marking.
This symbol indicates that once the products life-span has expired
it must be disposed of separately from other rubbish. The user is
therefore obliged to either take the product to a suitable differential
collection site for electronic and electrical goods or to send it back to
the manufacturer if the intention is to replace it with a new equivalent
version of the same product.
Suitable differential collection, environmental friendly treatment and disposal con-
tributes to avoiding negative effects on the ambient and consequently health as
well as favouring the recycling of materials. Illicitly disposing of this product by the
owner is punishable by law and will be dealt with according to the laws and stand-
ards of the individual member nation.
Description
This device is suitable for detecting the presence of metallic masses in a magnetic field
generated by a special external circuit (sensitive element) connected to it.
The system is made up of four parts:
1) An MWZ detection device contained in a special protective case.
2) Socket for fitting on panelling or rails DIN46277
3) A sensitive element (not supplied by us) that should be made up of a multipolar cable
with one or more wires and must respect the measurements as specified in the drawings.
4) A bipolar cable (not supplied by us) with which to connect the sensitive element to
the detecting device. If you use two single wire cables these should be loosely wound
together.
Use
The MWZ detector is best used in the following fields:
- the automatic opening of gates and doors where there is intense traffic (for blocks of
flats, office buildings and industry etc.);
- the control of vehicles in pay car parks;
- near automatic traffic light installations;
- detection, in predetermined places, of the presence of metallic masses in general.
Positioning the detector
The appliance is located inside a container that allows it to be installed on a panel or a DIN
rail. As the MWZ detector has a protection grade of
IP40
it must be placed inside a box or
casing in order to guarantee protection against water infiltration. It is absolutely forbidden
to install the device outdoors and it cannot be embedded. The interconnection between
the coil and the detector must be protected against water infiltration via capillarity. Access
to the appliance for future regulation and calibration must be guaranteed.
Making the sensitive element (fig. 1)
The possible dimensions are represented in figure 1. The sensitive element shall be
made by taking into consideration the system’s requirements, the fundamental part
of which is a multipolar cable, made up of at least two wires (
Ø 1-1,5 mm
). The wires
that make up the cable have to be connected in series. It is important that the sum of
their lengths does not exceed the limits indicated in figure 1 and is not less than
20
m
. Note: It is advisable to use a rectangular form when realizing the sensitive element,
the shorter side of which should measure
500 mm
and the length will depend on the
system’s requirements.
Installation (fig. 2 - 3 - 4)
- Dig a rectangular shaped excavation in the area which is to be controlled by the sensi-
tive element. The excavation must not be deeper than
100 mm
.
- If necessary protect the sensitive element with a special plastic sheath which is suit-
able for laying underground.
- Place the sensitive element into the excavation making sure that it lies correctly and
that there are no sharp edges or protuberances that could damage it.
- Connect the two ends of the coil to the appropriate binding posts (LINK) using a bipo-
lar cable no longer than
5 m
. The connection should be as short as possible in order
to optimise the operation of the system.
- Lay the coil underground and embed it in cement to ensure a stable position and
to prevent it from moving after setting. Adjust the sensor setting and place it in the
required position.
Fine tuning the detector
Fine tuning the detector must be carried out after having connected the coil endings to the
binding posts (LINK), and with no metallic masses in the vicinity as follows:
- power up the sensor;
- set the frequency selector switch to "
M
" (medium frequency);
- press the RESET button;
- the device will start the fine tuning procedure;
- Leds
L1
and
L2
will flash for 3 seconds.
Note: "
L3
" not lighting up indicates that the device is not calibrated due to a less than
perfect installation. You can try to get around this problem by adjusting the 3-way frequency
switch (modifying the characteristics of the magnetic field) and then resetting the device
and carrying out a new fine tuning cycle.
Led functions L1, L2, L3, L4
L1, L2
flash for 3 seconds at start up indicating that the system has started calibrating.
Once the calibration cycle has terminated the Leds have the following meanings:
- L4 is normally lit:
switches off when the device detects a metallic mass
- L3 is lit, L1 and L2 are off
: the device is functioning normally
- L1, L2 and L3 are off
:
the inductive coil is not connected
- L1 is lit, L2 and L3 are off
: excessive coil length (see fig. 1)
- L2 is lit, L1 and L3 are off
: insufficient coil length (see fig. 1)
Setting the Dip-switch
The appliance function selection is carried out using the block of four dip switches
(numbered from one to four) located on the front of the device. The appliance cam be
set to different function modes by moving dip 1: detection mode "normal passage" and
detection mode "rapid passage".
Dip 1 OFF
Metallic mass detection is set to the normal passage mode
(slow passage or stopping). Sensitivity level selection Dip 2-3-4
Selecting the sensitivity level "Normal passage"
Sensitivity levels
DIP 1
DIP 2
DIP 3
DIP 4
level 0 (min.)
OFF OFF OFF OFF
level 1
OFF ON OFF OFF
level 2
OFF OFF ON OFF
level 3
OFF ON ON OFF
level 4
OFF OFF OFF ON
level 5
OFF ON OFF ON
level 6
OFF OFF ON ON
level 7 (max.)
OFF ON ON ON
Dip 1 ON
Metallic mass detection is set to the rapid passage mode (passage without stopping,
high speeds up to
200 km/h
).
Dip 2 allows you to select the time intervention threshold for rapid passage:
- Dip 2 ON
15 ms
- Dip 2 OFF
30 ms
Sensitivity level selection Dip 3 - 4.
Time intervention and sensitivity level in the "Rapid passage mode"
Sensitivity levels
DIP 1
DIP 2
DIP 3
DIP 4
ON OFF
level 0 (min.)
ON
15 ms 30 ms
OFF
OFF
level 1
ON
15 ms 30 ms
ON
OFF
level 2
ON
15 ms 30 ms
OFF
ON
level 3 (max.)
ON
15 ms 30 ms
ON
ON
Terminal board connections (fig. 6)
1-2
Power supply (see the indications on the terminal board)
4-9
Impulsive output, relay contact common/N.O. The metallic mass will be monitored
for a 1 second time period after which the relay will reset and wait for the next
positive reading.
5-6-10 Continuous output, relay contact N.O./common/N.C. The metallic mass will be
monitored for the entire time in which it effects the coil.
7-8
Inductive coil bipolar cable in input (LINK).
Note: When constructing the inductive coil a single cable with more than one pole 3x1, 4x1,
5x1 must be used, unused poles should be isolated and disconnected. The serial connection
point could be isolated using paraffin. The cable inlaid into the ground must not move when
subject to passing vehicles.
Technical data
•
Version
METALDEC230
- Power supply
230 Vac (50-60Hz) 15 mA - 3.7 VA
• Version
METALDEC024
- Power supply
24 Vac/dc 50 mA - 3.7 VA
•
8 sensitivity settings
•
2 function modes:
- normal passage mode
- rapid passage mode up to 200 km/h
•
2 relay outputs:
- the first is impulsive, with a
N.O.
contact
- the second is continuous, with an exchange contact
N.O-N.C.
•
Contacts:
1 A at 24 Vdc
•
Operating temperature range:
-20°…+55 °C
• Protection grade
IP40
HIGH-SENSITIVITY VEHICLE DETECTION UNIT
MODEL
DATE
SERIAL NUMBER
SERIES
This product has been tried and tested in the manufacturer's labora-
tory, during the installation of the product follow the supplied indica-
tions carefully.
1 2 3 4
ON
