Conduit Adapters Make The Connection

A new range of conduit adapters designed for transitioning from conduit to 7/8-16UN Minifast, M12 Eurofast and M23 Multifast connectors. Hans TURCK has a range of new conduit adapters designed for transitioning from conduit to 7/8-16UN Minifast, M12 Eurofast and M23 Multifast connectors. The front of the adapter provides quick disconnect compatibility, while the back provides Screw Terminals for wiring inside the conduit. The conduit adapters are available with one or two connectors and attach to standard conduit bodies.

The conduit adapters are available with one or two connectors and attach to standard conduit bodies. These rugged Turck connectors provide IEC IP67 protection when all receptacles are connected or covered with plugs. Receptacle housings are available in nickel-plated brass or 316 stainless steel to suit many applications. The conduit adapter also includes a gasket and mounting hardware (8-32 by 0.5in) for ease of installation.

Novel Thermal Design Reduces Inverter Volume

Lenze has developed 8200 vector inverters using the 'cold plate' technique for cases where the inverter can be mounted directly onto a substantial heatsink. AC Tech (Lenze AG) 8200 Vector Inverters are available for power 0.55 to 90kW with three-phase supply. In the more popular smaller sizes up to 22kW, a space saving variant can reduce the requirement for panel space by up to 40%.

By dissipating the heat outside the cabinet, these 'cold plate' versions enable panels to have higher enclosure ratings. Alternatively a plate with external cooling by liquid or air can be used. The cold plate versions of the 8200 vector inverters have no heat fins, so heat generated is passed to the mounting plate and transmitted out of the cabinet.

In this way inverters require less mounting depth and the space savings are substantial. For a 1.5kW inverter the saving is 25%, rising to 40% for a 22kW inverter. Therefore panels can be smaller and costs reduced. As the heat is now transmitted to outside of the cabinet, requirements for a flow of cooling air through the cabinet are removed. Cabinets can be sealed and protection to IP65 is easier to achieve.

This is particularly advantageous in dusty conditions where any through flow of air would cause a dust build-up. Above 22kW the cold plate design is not available. However an alternative 'push-through' design can be used right up to 90kW. Here the Lenze Inverter Heatsink is mounted outside of the panel, gaining the advantages of panel space and enclosure as described. The concept of the 8200 vector frequency inverter is based on a modular system of complementary components.

Combined with a Lenze geared motor or a Lenze three-phase AC motor, it can be used to implement electronic variable speed drives for a multiplicity of applications. Compact: Side-by-side mounting saves space in the control cabinet. Integrated filters (optional) simplify installation. Flexible: The modular structure enables the inverters to be optimised for your application. This results in cost-effective but high-performance drive solutions. Whether as a "stand-alone" inverter with setpoint selection via potentiometer or a networked inverter with speed feedback in master/slave mode, the inverter functions can be adapted to suit every application.

Industrial PC Separates The Display From The PC

Xycom Automation's new 1510 Industrial PC answers a common need to separate the display from the PC. The 1510 series Xycom Industrial PC is a "node" box (without integrated display) with up to 700 MHz Pentium III performance for demanding factory automation applications. Coupled with the Xycom 3015 LCD flat panel monitor, the 1510 gives the user an array of options to choose from. The 1510 Xycom Industrial Computer offers a 10-slot passive backplane with 8 available expansion slots including 4 full-length ISA, 3 full-length PCI, and 1 half-length PCI.

Ian Law, Xycom Automation's Sales Director, explains "There is a large group of factory Automation customers that require a "blind" PC solution with ISA and PCI expansion, or have good reason to physically separate the display from the rest of the PC. Many of these customers have accepted the limitations of using commercial grade PCs with an Industrial Computer LCD monitor. Because these same customers usually require ISA expansion and the commercial market has abandoned ISA expansion capability, these customers are left with even less desirable solutions.

New ABB Industrial Drives Make World Debut

The new multidrives, extension of ABB Low Voltage Industrial Drives, based on a modular configuration of dramatically smaller inverter modules, were introduced on exhibit at the Hannover Messe 2004. Following the debut of the multidrives there, it has been a successful roll out to a wide range of applications and industries around the world. The modular configuration of the multidrive provides control of multiple motors across a 1.5 - 5,600 kW power range, from 380 V up to 690 V. A single rectifier unit can be combined with a host of inverter units that are connected in parallel, to provide output current required by any given application. The multidrive offers a state of art solution for offshore and drilling applications - ultra compact and modular design ensures high availability and service.

ABB's multidrive is built from industrial drive modules that are connected to a common DC bus bar. The common bus bar is used to supply the drive modules with DC power, and each module then inverts the DC to AC and powers an individual motor. The DC power is derived from a single supply unit (rectifier) that is built into the front of the same multidrive configuration. The standard DC bus arrangement enables single power entry and common braking resources for several drives. "Common braking includes regenerative braking and motor-to-motor braking depending on the demands and modes of the various motor loads in a process or on an original equipment machine," according to Tuomo Tarula, market manager for Marine and Offshore, ABB Drives, Helsinki.

Modular construction simplifies the total installation and results in many benefits: savings in cabling, installation and maintenance costs; reduced line currents and simpler braking arrangements; energy distribution over the common DC bus bar, which can be used for motor-to-motor braking without the need for a braking chopper or a regenerative supply unit; reduced component counts; increased reliability; and space savings.

New BLF Brushless DC Motor System

Oriental Motor USA Corp. introduces the new BLF series brushless DC motor system that adopts a brand new design for its motor, gearhead, and driver. High performance speed control is achieved with an increased speed range of 80 to 4,000 rpm (50:1). In addition, the new BLF series is IP65 rated providing splash and dust protection.

The BLF series driver introduces a detachable digital operator unit that serves both as a data input unit and a digital display that can be used up to 16.4 ft (5m) away from the installed driver. The user can program 8 separate speed levels. Each speed can be set in units of 1 rev. per minute with separate acceleration and deceleration values. Detection of various motor and driver error functions including overload, overvoltage, low-voltage, missing phase, overspeed, overcurrent, etc., will immediately stop the motor and output an alarm signal.

The Oriental BLF series driver utilizes 3 speed display modes to help the user. The display modes include motor speed display in rpm, conveyor speed display in meters per minute, and load factor display in percentage of actual load to rated load. A speed teaching function allows the user to set BLF series speeds by physically operating the motor. Four speed-setting methods available to the user are: digital operator, internal potentiometer, external potentiometer, and external variable DC voltage. The motor and driver can be separated by a distance of 65.6 ft (20m).

The BLF brushless dc motors are available in 30 watt (BLF230A), 60 watt (BL460A), and 120 watt (BLF5120) versions. Two Oriental Motor gearhead families, the parallel shaft gearheads and the hollow shaft flat gearheads, are available for use with the BLF motors depending on your requirements.

Programmable Pressure Sensors

TURCK USA introduces new programmable pressure sensors that combine high accuracy and performance with simple programming, resulting in an extremely user-friendly sensor. The PS400 and PS500 sensors are easily programmed via three controls: two push buttons for scrolling through programming features and one recessed enter key. The menu is clear and concise to allow parameters such as set points, reset points, output functions, analog ranges, and a range of special options to be programmed with ease. The menu also includes an optional electronic lockout that disables the push buttons from functioning until the lockout is removed.

The high accuracy programmable pressure sensors are specified with a switch point accuracy of ≤+/- 0.5 percent, generally exceeding what is required by the machine engineering sector. The combination of high accuracy and flexible programming often allows a single sensor to replace several conventional sensors (with varying sensing ranges) resulting in a significant reduction in inventory.

These TURCK sensors feature a large, bright 4-digit, 7-segment LCD display with a constant indication of pressure in either psi (pounds per square inch), bar, kPa (kilopascals), or MPa (megapascals). This display is tilted at a 45° angle, and can be inverted electronically for easy reading in a variety of applications. The PS400 and PS500 pressure sensors are encased in compact, 34 mm diameter housing with various threaded connections for simple, versatile installation. The PS500 series also features a process connection that allows the housing to rotate 360 degrees for optimal viewing prior to locking the sensor in place.

The innovative PS400 and PS500 pressure sensors were designed to tolerate tough applications. Stainless steel housing with an integrated stainless steel M12 eurofast ® connector enables fast and reliable installation. The sensors also offer a variety of stainless steel pressure connections including G1/4 and 1/4-18NPT threads.

The sensors are highly resistant to overpressure and burst pressure, yet they also incorporate a patented medium stop system that prevents leakage when these levels are exceeded, which immediately seals the sensor if the pressure cell has been damaged. All of these features were incorporated to create a pressure sensor ideal for use in virtually any application.

ABB Drives Promote Green Paper Making

Paper manufacturer UPM's plant at Shotton has achieved its goal of producing all its paper from recovered waste paper, rather than virgin wood, with the help of ABB variable speed drives. Known as the '100% Shotton' project, it has involved the building of a new recycled fibre plant, a sludge plant and modifications to Paper Machine 1 and Paper Machine 2. ABB General Purpose Drives are used mainly on pumps in the process, using variable speed to match pump speed to the production rate.

They are also used on chemical dosing pumps to accurately add chemicals to the pulp. Some conveyors on the process also use ABB variable speed drives. The drives help control the process better, adjusting the inputs to the plant to maintain the correct pressure and temperature conditions. The drives also make it easier to control the production rate. Additionally, they contribute to energy savings by reducing the power drawn.

Ray von der Fecht, Project Automation Manager on the 100% Shotton project, says: 'We chose ABB variable speed drives because ABB is a respected name, well known in the paper industry. Also, we know the products and the people. Overall, ABB offered a very good solution along with the best price. So well did the implementation phase go, that start-up of the system went according to plan, with the drives and automation system being switched on at the exact planned minute in the schedule'. 'It was like switching on a light', says von der Fecht.

One of the UPM's major criteria for the drives was maintainability. The drives had to be capable of being changed out quickly in the event of failure and also had to be easy to move. Interchangeable cards were also considered an advantage, allowing the company to keep dives running by simply changing some of the critical components. Compact size was also part of the demand, to save on space, improve efficiency and heat loss and cut cooling costs. The ABB drives scored on all the points. Another useful feature was their ability to communicate over Profibus, the industry standard for communication in paper production. The drives also feature input line chokes to reduce harmonics fed to the network and output filters to reduce the electrical stresses on the motor windings. High reliability was the most important criterion. Says von der Fecht: 'We have had good experience with the ABB drives'.