Tuesday, October 20, 2015

One Servo Cable Covers All The Bases



All servo cables are the same, right? Well, not really. There are thousands of different servo cable types, each with its own electrical and mechanical capabilities and set of approvals. If you build, install or maintain industrial machines, the sheer diversity of servo cables can be a real problem.

To meet all your application requirements, you end specifying and stocking many types of servo cables, which drives cost and complexity. Our latest servo cable can help you simplify your selection process.

Designed for stationary applications with occasional flex cycles the ÖLFLEX® SERVO 719 CY is the closest thing you'll find to a universal servo cable. It offers a broad range of sizes, electrical properties and approvals. It also features new construction that allows the cable to span longer installation lengths.

Here's a closer look at all the SERVO 719 CY cables can do:

Sized And Built Right. SERVO 719 CY comes in more than 20 sizes to meet the requirements of different servo drive systems. The new cable also offers a thinner outer diameter than comparable UL-certified cables, saving additional space and weight.

The cable consists of four conductors for motor power and protective ground, plus one or two optional control pairs. SERVO 719 CY cables have a copper shielding, polypropylene insulation and PVC jacketing.

Enhanced Electrical Properties. To meet the requirements of a common motor-and-drive systems, SERVO 719 CY has a UL nominal voltage of 1,000V and test voltage of 4,000 V.  

The new cable also features other key electrical property enhancements that allow longer cable runs. To make the longer runs possible, the cable insulation has been optimized to reduce capacitance and leakage currents while improving dielectric strength.

Multiple Standards. Because it supports multiple regulatory standards, SERVO 719 CY can serve in many different stationary industrial machines and automation systems. These approvals include:

  •     UL AWM Style 2570
  •     Flame Retardant VW-1
  •     cRU AWM I/II A/B FT1
  •     CE
  •     RoHS

With its mix of properties and approvals ÖLFLEX SERVO 719 CY can serve as a drop-in-replacement for our ÖLFLEX SERVO 700 CY and ÖLFLEX SERVO 709 CY cables. 

New Industrial Ethernet Cables For Tray Applications



Industrial Ethernet offers plenty of flexibility when it comes to designing complex automation networks.  Until recently, you couldn't say the same about data cables used in these networks.

CAT 5e Ethernet cables have traditionally been intended for stationary applications. And in the early days of industrial Ethernet, that limitation didn't matter much. Modern automation systems, however, increasingly require a new breed of Industrial Ethernet cables that can withstand more flexible conditions.

Our new ETHERLINE® Tray cable has been designed with flexibility in mind.  With its PLTC rating, the ETHERLINE® Tray can be used in cable trays, interconnecting the Industrial Platform with the Commercial Infrastructure.  The new ETHERLINE cable features four twisted pairs of stranded copper, and can handle gigabit speeds. 

Reliable Data Transmission.  Reliable data transmission is a must-have if you want to control production equipment over an Ethernet network. Unfortunately the electrical noise that pervades most manufacturing environments makes error-free data transmission a challenge. The new ETHERLINE cables combat electrical noise with a rugged, flex-friendly foil and braid EMI shield.

The construction of the Etherline Tray CAT.5e consists of a polyolefin-based insulation and a PVC jacket. The cable has a 600V rating making it ideal for tray applications alongside power cables. When used in flexible applications, the cable can withstand operating temperature from -25 to 80ºC.  They have a characteristic impedance of 100 Ω, ±15 Ω, at 100 MHz. 

Important Approvals. The new ETHERLINE cables have a wide range of approvals, which lets them serve in many different settings. These approvals include:

  • CMR per UL 444
  • CMG per UL 444
  • PLTC per UL 13
  • AWM 2570 80°C 600V
  • c(UL) CMG
  • RoHS II


Click here for more information on the ETHERLINE CAT.5e Tray Cable

Monday, October 12, 2015

Differences in size and weight of equipment using copper and aluminium conductors

Common misconception

It is a common misconception that electrical equipment built using aluminum conductors will always be larger than the same equipment using copper conductors. While the actual conductor within the equipment will be larger with aluminum, many times the enclosure for the equipment is the same size whether copper or aluminum conductors are used.

This is true for switchboards, panelboards and most dry type transformers. Oil filled transformers will generally range from 2-5% larger when constructed with aluminum instead of copper windings.
The biggest size impact for electrical equipment when copper and aluminum conductors are considered is for busway. Since the actual conductor is the primary component within the busway, the size difference will be more apparent.
Busbar system inside low-voltage switchgear
Busbar system inside low-voltage switchgear (photo credit: Edvard Csanyi)

For example, GE busway is 4.5” thick, but the width will vary. For 1000A busway, the aluminum bus will be approximately 22% larger than copper bus and for 4000A busway, the size difference increases to almost 27% larger for the aluminum.
Even though the size for the aluminum bus is larger than for the copper bus, the weight difference is more dramatic and favors the aluminum bus.
Using the same examples used for size and assuming 3 phase, 4 wire busway, the 1000A copper is 50% heavier than the aluminum and for the 4000A busway, this value increases where copper is 73% heavier than the aluminum. This weight differential can be a huge factor for both the designer and the installer.

For example a 4000A, 10 foot section of copper bus is approximately 520 pounds, while the same busway with aluminum conductors is only 300 pounds. Installation by the contractor and mechanical support design by the engineer are considerations when the difference between the two products is considered.
 
The weight difference between equipment items with aluminum or copper conductors is present with all of the equipment types. For switchboards, the actual percentage will vary significantly with the amount of breakers installed in a section; and with a higher count of breakers, the percentage of weight contributed by the busbars diminishes.

However, if you just consider the weight of the steel enclosure and the busbars, copper bussed switchboard sections will be heavier than aluminum bussed switchboard sections, varying between 20% for 1000A sections to 29% for 4000A sections.

Click here for the full article

Friday, October 9, 2015

New Industrial Ethernet Cables For Tray Applications



Industrial Ethernet offers plenty of flexibility when it comes to designing complex automation networks.  Until recently, you couldn't say the same about data cables used in these networks.

CAT 5e Ethernet cables have traditionally been intended for stationary applications. And in the early days of industrial Ethernet, that limitation didn't matter much. Modern automation systems, however, increasingly require a new breed of Industrial Ethernet cables that can withstand more flexible conditions.

Our new ETHERLINE® Tray cable has been designed with flexibility in mind.  With its PLTC rating, the ETHERLINE® Tray can be used in cable trays, interconnecting the Industrial Platform with the Commercial Infrastructure.  The new ETHERLINE cable features four twisted pairs of stranded copper, and can handle gigabit speeds. 

Reliable Data Transmission.  Reliable data transmission is a must-have if you want to control production equipment over an Ethernet network. Unfortunately the electrical noise that pervades most manufacturing environments makes error-free data transmission a challenge. The new ETHERLINE cables combat electrical noise with a rugged, flex-friendly foil and braid EMI shield.

The construction of the Etherline Tray CAT.5e consists of a polyolefin-based insulation and a PVC jacket. The cable has a 600V rating making it ideal for tray applications alongside power cables. When used in flexible applications, the cable can withstand operating temperature from -25 to 80ºC.  They have a characteristic impedance of 100 Ω, ±15 Ω, at 100 MHz. 

Important Approvals. The new ETHERLINE cables have a wide range of approvals, which lets them serve in many different settings. These approvals include: 


  • CMR per UL 444
  • CMG per UL 444
  • PLTC per UL 13
  • AWM 2570 80°C 600V
  • c(UL) CMG
  • RoHS II


For more information on the ETHERLINE CAT.5e Tray Cable,  click here