NIVELCO BCV-141 User manual

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1. INTRODUCTION
The NIMET BC capacitive proximity sensors are for industrial automation tasks for non-contact detection of metallic and non-
metallic objects (water, plastic, stone, wood, etc.). The NIMET BC capacitive proximity sensors operate like an open capacitor.
The dielectric of the capacitor is the air. If there is an object with a significantly different dielectric constant in the sensing area,
the switch will change state. The material-dependent sensitivity can be set with the potentiometer. Devices with a DC power
supply have short-circuit protected PNP or NPN transistor outputs. Devices with an AC power supply have a thyristor-driven
output. Furthermore, there is a LED and a potentiometer on the backplate of the device. The LED shows the output state.
2. TECHNICAL DATA
GENERAL DATA
Type BCV
–
BCZ
–
BCV
–
BCZ
–
141 142 161 162 145 165
Sensing distance 8 mm 15 mm 8 mm 15 mm
Metal holder min. distance 10 mm 30 mm
Hysteresis Max 20 % of sensing distance
Supply voltage (operational) 12
–
24 VDC (10
–
30 VDC) 100
–
240 VC (85
–
264 VAC)
Sensitivity adjustmen
t
With potentiomete
r
Max. current consumption 15 m
A
2.2 m
A
Residual voltage 1.5 V 20 V
Max. response frequency 50 Hz 20 Hz
Setting distance 0
–
5.6 mm 0
–
0.5 mm 0
–
5.6 mm 0
–
10.5 mm
Output 30 VDC transisto
r
230 VAC
NPN PNP NPN PNP thyristo
r
Maximum output load Resistive load: 200 mA, Inductive load: 100 m
A
Sensing distance temperature sensitivit
y
±10% max for sensing distance at +20°C, within the temperature range of −25°C…+70°C
Housing 18 mm 30 mm 18 mm 30 mm
Housing material Plastic Metal Plastic Metal
Connection, 2 m cable with plastic
insulation 3 x 0.25 mm22 x 0.25 mm2
A
mbient temperature −25°C…+70°C
Electrical protection Class III. Class II.
Ingress protection IP66 IP65 IP66 IP65
Weight ~72 g ~212 g ~63 g ~220 g
2.1 Accessories
User’s manual
Warranty card
EU declaration of conformity
Two hex nuts for mounting
2.2 ORDER CODE (NOT ALL COMBINATIONS ARE POSSIBLE!)
NIMET B C – 1 –
TYPE [Ø mm] CODE SENSING DISTANCE [mm] CODE OUTPUT CODE SUPPLY VOLTAGE CODE
18 V 8 (Ø18) 0 NPN / NO 1 230 V AC 1
30 2 15 (Ø30) 5 PNP / NO 2 10
–
30 V DC 4
Thyristor / NO 5
2.3 DIMENSIONS
BCV–14–
BCZ–16–
3. INSTALLATION
The device must be mounted with the two hex nuts provided with it so that the distance
between the device and the object to be detected is less than 70% of the sensing (switching)
distance of the given device.
Materials of sensing targets: Sensing distance may be different due to the electrical
characteristics of the target (conductivity, non-dielectric constant) and its physical
properties, like water absorption, size etc.
High-frequency electric fields may cause malfunction, e. g., fields generated by
washing machines, etc.
Surrounding environment: water or oil on the surface of the sensing part may cause a
malfunction. If the sensing bottle is covered in oil etc., it may cause a malfunction.
Especially in the case of the 15 mm version (BCZ–16–), which is highly sensitive
to certain objects and water droplets.
Oil: Do not let the oil or other liquid flowed into the sensor or in the plastic case.
3.1 MUTUAL INTERFERENCE &EFFECTS OF SURROUNDING METALLIC OBJECTS
When several proximity sensors are mounted close to one another, the sensors may
malfunction due to mutual interference. Therefore, be sure to provide a minimum distance
between sensors as per the chart below.
Type BCV–14–BCZ–16–
A
[mm] 48 90
B [mm] 54 90
When sensors are mounted on a metallic panel, the sensors must be prevented from being
affected by any metallic objects except the target. Therefore, be sure to provide a minimum
distance as per the chart below.
Type BCV–14–BCZ–16–
ℓ[mm] 20 10
d [mm] 54 90
m [mm] 24 45
n [mm] 54 90

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4. WIRING
4.1 CONTROL OUTPUT DIAGRAM
DC 3-wire type
NPN output
PNP output
AC 2- wire type
Thyristor output
Attention:
Devices with an AC power supply must not be powered without a load connected in series
to avoid damaging the devices. The load must be connected in series with the device. The
phase must be connected to the load.
4.2 SENSITIVITY ADJUSTMENT
1. Without a sensing object, turn the potentiometer
to the right (on the backplate of the device) until
the output switches on.
2. Place the target in front of the sensor and turn the
potentiometer to the left until the output switches
off.
3. If the difference between positions 1and 2is
more than one and a half turns, the setting is
stable. Therefore, the potentiometer should be
turned to the middle between the position 1 and 2
when finalizing the adjustment.
4. If the target’s distance from the surface of the
sensor is variable, follow the procedure below:
Set point 1 when the target is at the nearest
position and set point 2 when the target is at the
farthest position. Then set the potentiometer in
the middle between the two positions.
If the distance between the sensor and the target fluctuates, move the sensor to the
farthest position and adjust the potentiometer as described in 2.
Turning the potentiometer clockwise is increasing, while turning it counter-clockwise
decreases the value. The potentiometer is adjustable within 15±3 turns. If it is turned
past that, it will turn without the value changing.
The notes in brackets ( ) apply to the closed-by-default variant.
5. MAINTENANCE AND REPAIR
The device does not require regular maintenance. However, if the settings deviate from the
ideal position later, the adjustment procedure must be repeated. The warranty conditions can
be found on the warranty card.
When sending a device back for repairs, the official repair form must be included in the
package. In it, the sender must state that the device was properly decontaminated and the
device was cleaned from all harmful or hazardous substances. Download the form here:
Returned Equipment Handling Form.
6. STORAGE CONDITIONS
Storage temperature: −30°C…+80°C maximum humidity 95%.
bcv1410a0600h_05
May 2021
NIVELCO reserves the right to change technical data without notice!