AND-logic circuit with #amplifier

Distribution #box with 4 or 8 sockets;
with built-in signal amplifier,
to connect PNP #sensors in series
and recover any voltage drop.

AND-logic circuit with amplifier - Shield's M8 distributor.

Advantages:

• Led near each M8 socket shows on-off signal status.
• It is possible to put sensors in series with high voltage drop as well.
• Connection of many sensors to the cabinet by a simple 3-pole M12 #connector.
• Single PLC input can get signal from many sensors.

Accessories: special male M8 connector for input exclusion.

Modular #connection #box

Special modular production technique allows clients to order customized #spider distribution box.
The connection box is totally overmolded with thermoplastic polyurethane.
Tools flexibility makes these products application convenient even for small production lots on a wide range of #machinery and #equipment.
Customized configuration can be delivered in quantity of 1 or 20 or 100 or even thousands pieces with very good cost/quality ratio.
Machine manufacturer gets finished items ready for plug and play assembly.
Many standard configurations are available as well.

Spider harnesses connection with plugs, sockets and cables.

Advantages:
1. Optional devices can be connected, if necessary.
2. Easy and quick “plug & play” assembly.
3. Reduction in time wiring and easy maintenance.
4. Significant reduction of weight and overall dimensions.
5. Reduction in number of machinery spare parts.
6. Avoid cable waste during machine assembly.
7. Long life and robustness. Very good cost/quality ratio.

Link to www.shield.net for Company website.
Link here for more photos about Shield’s production .

#Approvals and #Certifications

Shield's sales department is at your disposal to help you to choose products with approvals from international organizations of specific quality trademarks.
The whole Shield's organization is Certified ISO 9001 for design, development and manufacture of sensors, distribution boxes and connectors of industrial automation with and without cable; manufacture and trade of electrical cables.

Top mounting Distribox series

Shield – M12 – M8 Series top assembly distribution box.

Distribution boxes,
top mounting M8 and/or M12 sockets,
from 2 to 15 sockets,
1, 2 or 3 signals each #female socket,
with or without signalling Led,
for #connection of #sensors, #actuators, etc.;
special circuits on request.

Triple #Distribox

Star shape Distribox,
triple line M12 female sockets,
from 3 to 15 sockets,
for #sensors #electrovalves, etc.

Star shape Distribution Box with M12 angled connectors

Triple line Distribox

Space saving
top mounting #distribution #box,
triple line #M8 sockets,
from 6 to 15 sockets,
for sensors or small signals connection, etc.

Triple Line Distribox

SK23 series Distribox + SF23 series Distribox

Distribution box with M8 female socket connectors

#Distribution #boxes,
top mounting #M8 sockets,
from 4 to 10 sockets,
with or without signalling Led,
for connection of sensors, etc.;
special circuits on request.

Distribution box with narrow spacing and M8 socket connectors

Distribution boxes, narrow pitch,
top mounting M8 sockets,
from 4 to 10 sockets,
with or without signalling Led,
for connection of sensors, etc.;
special circuits on request.

SD20 series Distribox + SK20 series Distribox

Distribution box M12 socket with flat profile for application with small space.

#Distribution #box,
side mounting #M12 sockets,
with small space profile,
from 2 to 10 sockets, 1 or 2 signals each socket,
with or without signalling Led,
for connection of sensors, actuators, etc.;
special circuits on request.

Distribution box with M12 socket and top mounting.

Distribution box,
top mounting M12 sockets,
from 4 to 10 sockets,
1 or 2 signals each socket,
with or without signalling Led,
for connection of sensors, actuators, etc.;
special circuits on request.

7/8" and #M23 moulded #connectors with #cable

Round power connectors from 2- to 25-pole. Male, female, flying version and receptacle.

HD and HE series.
Round middle #power connector up to 600V, 12A,
from 2 to 6 poles for power connection,
versions of 14, 19 and 25 poles for signal connection;
female contact + female thread,
female contact + male thread,
male contact + male thread,
male contact + female thread,
with anti-vibration system,
wide cable choice,
single head or extension cable;
application with motors and distribution boxes, etc.

#Current-carrying #Capacity. Cable Voltage Drop

Cable choice.
An important element of assessment is the length of the cable. Each meter of the cable causes a voltage drop proportional to the value of the current that runs through it, if cosf = 1 we have: V = IxR.
V = voltage drop, I = current, R = resistance of the cable. In the case of inductive loads (solenoid valves, motors, etc.) or with variable currents, the higher current peak must be considered to avoid even temporary loss of power, which could hinder the proper functioning of the equipment. The longer is the cable, the greater the #voltage #drop, the IEC allows maximum values drop from 3% to 5% of rated voltage. Greater values are admitted only for the current peaks (e.g.: engines starting), if they do not create functioning problems. To minimize the voltage drop the cable section should be increased. Here are some tables that can help to easily calculate the minimum theoretical cable section. See tables 3 and 4 on the page http://www.shield.net/files/catalogue/support/2.2.pdf.
For example, an average continuous current 1 A with section 0,34 mm2 and cable length 10 m generates a voltage drop of 1,3 V, which is approximately 5% of 24 V.

#Cable Maximum Voltage Rating and #Mechanical Strength

Tips to choose a cable.
The maximum voltage depends on the material characteristics, the conductor insulation thickness and the outer sheath thickness. The insulation must be sufficiently resistant to prevent even accidental crushing situations, so different uses can have different requirements of project. Norms as UL and CSA (American), IEC (International) and EN (European) set values which are not always equal to each other and sometimes refer only to heavy employment, such as cables for power transmission.

For the transmission of signals inside industrial machinery, it is frequent to use reduced thickness which refers to commercial standards which are not supported by norms, such as cables LiYY and FROR. The advantage of using reduced thickness is particularly evident in the smaller volume occupied by bundles of cables. The reference nominal voltage is generally at least 300 V. On the market there are also low-cost cables in PVC, with extremely reduced thickness, which may not be compatible with the safety standards for specific applications; it is advisable to carefully evaluate the characteristics of the products.
The norm IEC 60204-1 (#Machinery #Safety) recommends the minimum section of the cables according to the application as well, see table 1 on page http://www.shield.net/files/catalogue/support/2.2.pdf. The norm allows smaller sections only if the mechanical protection is sufficiently guaranteed, for example with conduits.