SPS IPC DRIVES Germany 2014

Shield at Nuremberg, SPS Trade Show

November 2014
in Nuremberg by “Trade Center Nuremberg”, Germany

SPS IPC DRIVES
Electric Automation – Systems and Components
Technologies for Industrial Automation.
SPS IPC Drives is the exhibition for electric automation technology.
It covers all components down to complete systems and integrated automation solutions.

Opening hours:
Tuesday 25th November, 9:00 – 18:00
Wednesday 26th November, 9:00 – 18:00
Thursday 27th November, 9:00 – 17:00

SHIELD – Hall 10, Stand 10-516
Register for your free day ticket

What application gets the best advantage with #electrical distribution #box or #spider #harnesses?

Splitter connectors

Spider boxes can be made with many different sizes and shapes, thanks to tools flexibility. In most cases
the limit is only the imagination of the equipment designer.
Even small production lots usually are not a problem.
Clients can order customized spider distribution box thanks to a special modular production technique.
Distribution box is totally overmoulded with thermoplastic polyurethane.
These harnesses are often used in the following fields:
industrial automation, lamps for industrial vehicles, lamps for architectural applications, measurement devices and instruments, heating and air conditioning systems, hydraulic, pneumatic and electrical automation, industrial and public transport vehicles, bus,

Hybrid distribution box

railways, ships and airplanes, warehouse and moving goods plants, earth moving machines, conveyor belts, packaging, bottling, glass, plastic, metal, textile, paper and wood working machines, assembly machines, robot, industrial washing and drying machines, wind mills, cranes and air platforms, construction equipment, food industry machinery, agricultural machinery.

Suitable also for heavy-duty applications and IP67 or higher protection degree.

What is the main advantage for a machine manufacturer ?

• For applications or Countries with low-cost labour: reduced possibility of human error.
• For applications or Countries with high cost labour: reduced total cost (labour + material).

Spiders with JPT plugs

Other advantages

• reduction in time wiring electrical assembly
• machine maintenance easier and faster
• reduction in number of machinery spare parts
• stock codes reduction
• Bill Of Materials (BOM) easier for machinery builders
• cabling simplified
• possibility to include electronic circuits in boxes and/or connectors, in order to get peripheral controllers
• possibility of installation even by unskilled workers
• machinery aesthetically better

  

  Spider with electrovalve DIN 43650 connectors
• overall dimensions significantly reduced
• total weight significantly reduced

#Shield at #SPS/IPC/Drives in Parma (Italy)

Tuesday 20th – Thursday 22nd May 2014
in #Parma by “Fiere di Parma”
Viale dell’Esposizioni
SPS/IPC/Drives ITALY
Technologies for Industrial Automation
Opening hours:
9:30 – 18:00

Visit SHIELD at Hall 3 – stand F073

Visit Shield at SPS IPC DRIVES

Click here for your free ticket
Click here for further general info about SPS

This trade fair covers the entire spectrum of industrial automation products: from electrical components to complete systems, including integrated #automation solutions.

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.

Electronic Components Box. Small #box for #electronic circuits.

Small box for #PCB (Printed Circuit Board) with electronic components, very high water protection degree, without epoxy resin.
No tooling costs, with reduced labour cost and without potting resins.
This box is a simple and inexpensive solution to coat small electronic circuits with high quality materials (polyurethane).
Cables or connectors can be according to customer’s design; metallic sheaths or special cables are available, the item can also be supplied fitted with connectors according to customer’s request: such as, Tyco, FCI, Deutsch, Molex, Amphenol, etc.

Electronic Box for reducing labour costs

Advantages:

• Overmoulded with PUR (polyurethane)
• Protection degree: IP67
• Simple and low-cost
• Small dimensions
• Very light weight
• Electrical cable exit: single or multiple.
• Cable type according to customer’s needs.
• Possibility to have protection conduit of galvanized steel or stainless steel, for applications where the most reliability and mechanical strength are requested

#SPS IPC DRIVES – #GERMANY – #ITALY

SPS IPC DRIVES is one of the most important exhibition about
Electric Automation – Systems and Components Technologies for Industrial #Automation.
This trade fair covers the entire spectrum of industrial automation products: from electrical components to complete systems, including integrated automation solutions.
It is made

• In May, every year,
  by “Fiere di Parma”
  Viale dell’Esposizioni,
  Parma
  Italy
• In November, every year,
  by “Messezentrum Nürnberg”,
  Nuremberg
  Germany

www.shield.net

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 .

#Cable #protection, #conduits made of steel

Boxes and #connectors are available with cable protection conduits made of steel.

Devices with reinforced cable

It can be an external braid or a conduit of galvanized steel (stainless steel upon request).
Metallic flexible tube increase stensile strength, mechanical abrasion and impact resistance, temperature and fire resistance.
Steel braid. In the case of metal braid (armoring), a further option is to put a second external sheath in order to protect the metal for outdoor applications, facilitating cable cleaning and preventing corrosion, but the diameter becomes bigger.
Steel flexible tube, compared to armoured cable, offers a better protection against crushing and could be even used just for a partial length (limiting the tube to the length where it is really useful, you get a cheaper cost and more flexibility where the tube is not necessary); on the other hand its external diameter is bigger.
Conduits of polyamide (nylon) are available as well; their dimensions are bigger than conduits of steel, but they have a very good chemical resistance and sometimes they are cheaper.
Halogen free polyester braided sleevings can instead offer flexibility and high temperature resistance, 150°C working temperature, 200°C melting point.
Typical applications are with welding machines, construction equipment, agricultural machinery, food industry machinery, earth moving machines, lifting or air platforms, warehouse and moving goods plants.
Another interesting application is to prevent rodent (rats, mice) and termite attacks. In many areas steel armouring (armoring) is the best way to stop or reduce serious damage.
See more details at http://www.shield.net/?news/index/product .
Click here for more photos about Shield’s production .

#Safety #circuits

IP67 electrical signal distributor for Safety Applications

Distributor device and #M12 #connectors with 5 or 8 poles
for application with safety circuits.

• Standard circuits available to connect safety sensors.
• Overvoltage category III, pollution degree 3.
• Yellow body.
• Customized circuit availability.

Click for larger photo
Click for all photos of Shield’s product on Flickr

#BUS #DISTRIBUTION POINT

The picture shows an M12 connector distribution point for #CanOpen or #DeviceNet bus applications. This distribution box can manage up to 12 circuit branches. It is a cost effective patch panel to connect many bus devices. Compact dimensions and easy to install.

The box is available with many connection circuit options, plugs and/or sockets in any position, even for small production lots.

Can Open, DeviceNet, M12 distribution box

Modular Distribution Box with #JPT #connectors

Electrical distributor for JPT connectors, Tyco Junior Power Timer

Very often it is necessary to connect a group of #electrovalves and wires to a central cabinet.
These electrical #harnesses can be made with a plug-and-play solution, simple and heavy duty.
Small quantities or big series are not a problem. Outputs quantity and cable lengths are designed upon request.
Connectors can be EN 175301-803 (ex DIN 43650), Junior Power Timer (JPT), Superseal, Tyco, Deutsch (DT, DTP, DTM series: DT06, DTP06, DTM06, etc.), Hella or hybrid mixed combinations.
Distribution Box material is polyurethane. Standard cables are of PVC or PUR, but Silicon, FEP and other high performance materials are available upon request.
Most frequent applications are with ships, trucks, earth-moving machines, tree-cutting machines, cranes, lifting platforms, agricultural machinery, etc. and hydraulic power packs in general.

How to prevent #connectivity #mistakes

Shield manufactures distribution boxes with M12 connectors that can have different #mating #keys (IEC 61076-2-101 standard); in this way it is not possible to mount connectors in the wrong position. Moreover, to facilitate the assembly visually, connectors may have different colours as well in addition to the key.
Very useful for maintenance when box is positioned in difficult areas or when a connection mistake could cause delays or damages.

Example of distribution box to prevent assembling mistakes.

#D-Sub connector, small dimensions, with #IP67 IEC60529 protection

Dsub connector with IP67 protection (EN IEC 60529)

Thanks to an innovative lip gasket, JxLF and JxMF series D-sub female connector family guarantees a high degree of #protection against #water and dust.
Can be mounted on any male connector plug already present on the market.
Terminals are crimped to wires, in this way ensure greater reliability compared to soldered or screwed terminals.
The housing may contain resistors or other electronic components, if requested.
PVC or PUR cable, with or without shielding. Standard wires with DIN 47100 colours.
Connection sockets from 9 to 62-pole, reliable and economic.
Angled or straight versions.

EN IEC 60529: IP67. #D-Sub #connector assembly

D-sub IP67 connectors

J series D-sub female connector sockets with IP67 protection degree according to IEC 60529 can be supplied with customized wiring as well:

• two, three or more cables may be overmoulded on the connector
• BUS extensions
• BUS backbone chain
• 9-pole, 15-pole, 25-pole, 37-pole, #Profibus, Interbus, #DeviceNet and #CanOpen applications
• stepping motor driver
• small motors 
• servo motor controller
• video camera
• industrial switch
• fieldbus gateway
• PLC, programmable logic controller,
• encoders,
•  etc.

#Coloured and/or A-B-C-D-P coded #M12 connectors

M12 - #IEC 61076-2-101 #connectors can be supplied with many different key codings to prevent assembly and maintenance mistakes.
Numbers of poles: from 2 up to 17.
Differently coloured connectors are also available to help easy matching, when plugs and sockets are positioned in difficult places for the operator.

Plugs and sockets to avoid error assembly.

Simplify your #wiring #assembly !

How many hours do you waste organizing your #electrical wiring?
Would it be useful for your #machine to have less spare parts?
How much space could you save reducing the dimension of distribution boxes and cables?
Is the weight of cables and boxes relevant for your application?
Does your wiring assembly require specialized workers?
Plugs, sockets, connectors, distribution boxes, cables, etc. are not a problem anymore.

Boxes and Spiders

Click for more details about this argument
Click for more details about boxes and spiders in general

6-signal #splitter of small dimensions

Splitter for several #actuators / #sensors, M8, M12 connectors, plugs or sockets.
Application: When there are many sensors and solenoid valves in small space.
For example the head of industrial #robot.
Each 8-pole M12 connector can drive from 1 up to 6 connectors M8.
Advantages:

• Reduces weight
• Reduces dimensions
• Very quick assembling
• Reduces inventory codes
• Easier maintenance
• Possible customizations
• Spiral cables are available as well

  

  Up to 6-signal splitter, spiral or straight cable

#Relays are no longer necessary

Do you have an on/off electrovalves application ?
Even if your #electrovalve supplies current over 0.5A,
relays or PLC power boards are no longer necessary.
This female socket connector contains a static relay and
is the right solution to drive high #current #solenoids.
(example: control of power electrovalves, mini-motors, contactors, etc.)
Allows to control power loads up to over 3A, with a small PLC signal.
The socket can connect the electrovalve to distribution box or directly to central cabinet.


Click for more details about this argument ;
Click for more details about connectors in general

Solution: static relay for solenoid valves

Micro Connector, also for #SMC #valve

EN 175301-803 (DIN 43650) type C, micro connector for solenoid valves

#DIN43650 form C #connectors.
The micro connectors with overmoulded cable produced by Shield are now available for all the electrovalves on the market, including SMC valves.
Socket contacts distance: 8 mm or 9.4 mm
PUR connector housing: very good oil resistance, IP67

#Electronic #Box for lighting information

This modular box can contain easily electronic components and lighting signals.

Distribox is a distribution box which can be also used to contain #lighting arrows or coloured #signals.
Distribox series is modular and dimensions can be according to customer’s project.
Advantages:

• Small dimensions
• Weightless
• Good water proof
• High efficiency
• Low consumption
• Design upon request as well

Electronic Box with power #LED #lamps

Shield box with LED lamps. Box dimensions 31 mm x 93 mm. Smaller and bigger dimensions are available.

Distribox is a distribution box which can be also used to contain LED #lights and illuminate dark angles of the #machine.
Distribox series is modular and dimensions can be according to customer’s project. 

Advantages:

• Small dimensions
• Weightless
• Good water proof
• High efficiency
• Low consumption
• Design upon request as well

Distribution box for #electrical #cabinet panel

It can be mounted on the front of an electrical panel or cabinet.

Distribox can have a rear cable or a simple rear terminal block.
In this way, the #distribution #box can be mounted on the front of an electrical panel or cabinet.
Available with M12, M8 connectors, female sockets or male plugs.

Cover for an #electronic #box

A Distribox with rear #connection can also become the #cover of a box for electronic circuits.
The number and the type of connectors can be changed according to the project needs.
In this way the customer can put inside his own circuit, even of big dimensions.
Here below the most common sizes are listed
(L x W x H mm):
120 x 80 x 55
120 x 80 x 85
160 x 80 x 55
160 x 80 x 85

Shield's cover with plug or socket connectors for electronic box.

Simple box for #electronic #circuits

This box can also be an enclosure for electronic printed circuit board.

Distribox can also become the container of electronic printed circuit board with #cable, or with #connector; polyurethane housing guarantees optimal water resistance.
Tooling modularity allows to eliminate all connectors from the box upper side, or to leave one or more connection males, with necessary poles quantity.

There are several advantages:

• wide range of dimensions, surface and thickness
• Led available
• minimum use of space
• low assemblage cost
• protection degree: IP67

Y Splitter, #M12-M12 #connector

Splitter useful to join on the same cable the signals coming from 2 different #sensors or to control 2 #electrovalves.
Solutions with direct cable instead of plug or socket connectors are available as well.
 

Splitter allows to use 1 single cable for 2 sensors or 2 valves.
Variants: each connector could be replaced by a cable,
moreover each connector could be male or female type.

#Receptacles

Examples of receptacles for panel applications

#M8, #M12, #M23, 7/8", male plug or female socket, angled or straight for mounting on panel.
Available with unsheathed or sheathed wires, with soldering or for printed circuit contacts.

Extension cord #M12 / #USB

Extension cord with several combination available

#Extension cords are available with the following #connectors at each side:

• USB standard type A or type B connector
• USB micro connector
• M12 male / female and with / without nut connected to the cable shielding.
• Can be used as an adaptor as well

#IEC 60335-1 #Certification for Household Appliances

Shield valves connectors can be supplied with certification
IEC 60335-1 – #household appliances
IEC 60695-2-12 and IEC 60695-2-13 glow wire test

These connectors conforms to IEC 60335-1

#Bus extension #cables

Shield – Extension Cables for several Bus Systems

#Shield produces #M12 extension cables for several bus systems:
Profibus DP, Profibus PA, DeviceNet, CanOpen, EtherNet, EtherCat.

• UL/CSA approved cable
• Cable lengths according to customer demands.

Alternative #solutions to #Bus: special circuits

Solutions with #distribution #boxes without Bus in many cases may be more advantageous, for example when they have circuits with special connections or when they contain electronic circuits dedicated to specific applications.

Disadvantages of the distribution boxes with Bus:

• complex circuits which require qualified technicians
• higher price
• equipments for control tests are expensive
• generally slower reaction times
• devices like sensors or actuators have different versions for each bus standard on the market: selection and availability are more difficult
• one or more Bus systems can prevail in the future and others may become obsolete: the risk to invest in the choice of a Bus system increases 

Customized distribution box can be alternative or integrative to BUS applications.

Advantages of the distribution boxes with special circuits:

• Modular system: several boxes shapes already available
• It is possible to combine from 2 to 15 female sockets or male plugs on the same box
• It is possible to integrate any electronic circuit: series or parallel connections, AND / OR, special connections with or without components of any type
• If necessary you can also add DIP switches, buttons and electronic displays
• It is possible to include a Push-pull control connector guaranteed for 5000 connections cycles (ODU, LEMO, FISCHER), useful for applications on devices which need to be changed frequently.

#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.

Distribution #Backbone #Chain

Chain made of electrical connections series.
The backbone is usually made with wires of 1,50 mm² or 2,5 mm².
Infinite number of connections.
The distance between 2 connections is upon request. Typically 1 meter.
Each output can be direct cable or connector, male or female, M8 or M12.
Example of application: #Led #illumination.

Each output can be cable or connector.

Distribution #box with #M12 sockets and built-in male 7/8" (or M23) control connector

Classic distribution box family with 4, 6, 8 or 10 #socket #connectors. Sockets can be M8 or M12.
Caps for unused sockets are available.
Control male connector is 7/8" of 14 or 19 or 25 poles (M23 of 12 or 19 poles).
This solution allows to easily change the box without unwiring the whole system.
The picture shows type SK205PD.

The internal circuit can be customized according to customer's request, for instance:

• independent and separated outputs
• series outputs
• parallel outputs
• AND/OR logic wiring
• electronic logic upon request

Wiring box with M12 female connectors and 7/8″ male connector.

Distribution box with #input and #output connectors of various sizes

SK3FxPD is a distribution #box family with triple line of output #connectors. The output connectors in the same box may be of different sizes and poles quantity. The control connector is a 7/8" of 14 or 19 or 25 poles (M23 of 12 or 19 poles). Caps for dust protection are available.
Advantages:

• reduction of boxes quantity
• no more need of adaptors
• possibility to prevent connection mistake using different sizes and codings.

Shield distribution box can be an alternative or complementary BUS applications.

No more adaptors! Distribution box can be supplied with input and output connectors of various types.

Distribution #box with M12 + 7/8" (M23) #sockets and built-in male 7/8" (M23) control connector

Distribution box with M12 sockets and built-in male power control connector.

These series are extremely multipurpose.
SK2HxPD: double line M12 + 7/8" (M23) female sockets, built-in male 7/8” (M23) control connector.
SK3HxPD: triple line M12 + 7/8" (M23) female sockets, built-in male 7/8” (M23) control connector.
Solutions with 3 or 4 or 5 modules. The male plug control connector can be 14-pole, 19-pole or 25-pole.
Standard or customized connection circuits.
The image shows a solution with 5 modules: the SK2H5PD distribution box with 5-pole M12 #female sockets + 7/8" socket, built-in 19-pole 7/8” #male plug control #connector.

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 exit #connector

Multiple exit cable connector,
to connect up to 3 #sensor switches each socket,
when used with an appropriate
distribution #box.
Application example: sensors connection.

Distribution Box with triple signal M12 connector.

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

#Timers for #condensate drain electrovalves

For #electrovalves with square #connector
EN175301-803 style A (former DIN 43650-A),
ISO 4400;
long life, easy installation and programming;
SMD technology, small dimensions, no maintenance;
adjustable timer setting; multi-voltage;
installation in any position.
Analogue type:
interval time = from 0.5 to 45 minutes, adjustable
discharge time = from 0.5 to 10 seconds, adjustable
Digital type:
interval time = from 0.1 sec to 99 hours, adjustable
discharge time = from 0.1 sec to 99 hours, adjustable

Timer with DIN 43650 connector for condensate drain electrovalve.

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. Ambient Air and Cable Temperature

How to choose the #cable #section.
The current flow in a connector and in its cable generates heat, thus a temperature rise. Any connector or cable insulating material has a maximum safety temperature that should never be exceeded to ensure the stability of their mechanical properties.
After verifying the insulating material quality and the working ambient air temperature, the maximum current-carrying capacity permitted in the connector can be calculated in function of the terminals size and the conductors section.
Table 2 on page http://www.shield.net/files/catalogue/support/2.2.pdf shows the maximum current values for a pvc cable (quality 70°C) with 2 or 3 wires without metal sheath, with copper conductors, employed for normal use and inserted into cable tray. For open air applications a current about 10% higher is admitted.
The ambient air temperature is measured around the cable, for example inside the cabinet or close to the machine interspaces. The right ambient air temperature is found after the normal functioning of the machine, under full load for a sufficient period of time, without taking into account the variations of the temperature due to heating of the cable. If the use does not require a higher temperature project, the conventional value of 40°C (IEC 60204-1) must be considered.
The table takes into account that in most of the machines not all cables are used simultaneously for long periods. In special cases (many wires used at the same time or high ambient air temperatures), a reduction factor of between 0,3 and 0,9 must be used to reflect the overheating of cables in the same group, otherwise verify that the temperature remains within the limits allowed. Particular attention must also be paid to vertical and limited ventilation routes.
Values and comments refer to IEC 60204-1 (Machinery Safety, edition October 2005) and IEC 60364-5-52 (Wiring Systems Security).

#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.