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Power consistency is control cornerstone
ControlDesign.com
Keywords: power supplies, Product Roundup, power management devices, machine control, Rick Pedraza, ControlDesign.com and Control Design magazine
Providing technical machines with high-quality power and protecting them from power surges and other disturbances is crucial when designing reliability into industrial automation systems.
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UNWANTED surges or disturbances can wreak havoc on sensitive factory-floor devices. As a result, new products and devices designed to prevent or reduce such risks are introduced continually to the global marketplace.
The power supply and power management market experienced some difficult times from 2001 until recently, as did the overall semiconductor market. Current forecasts are rosier and project that the recovery of the power supply industry will depend on new and improved product technology, architecture, delivery capabilities, price and quality.
According to recent research by industry analyst Frost & Sullivan, the North American uninterruptible power supply (UPS) market was $1.7 billion in 2003 and is expected to reach $2 billion in 2006.
In addition, increased networking capabilities have changed the demands on new power management devices, resulting in improvement in the markets since the second half of 2004. Worldwide shipments of UPS equipment and supplies are projected to grow at an annual rate of 6.8% to $10.1 billion by 2009.
Further, a soon-to-be-released report from Business Communications Co. (BCC) shows the worldwide market for power supply and management devices and software reached $27.5 billion in 2005, and is expected to grow at an annual rate of 9.6% to $43.6 billion by 2010.
To speed up the recovery, say Frost’s analysts, power supply manufacturers are introducing technologies to build power reserves into their new products, and eliminating the need for control designers to overbuild or oversize a system.
While many industry observers now describe power supply devices as high-end because they include programming and intelligence, Frost says the lack of strong differential features has created a commodity market for these products, especially in the high-end segment. Also, outsourcing to low-cost regions such as Asia is creating strengthening price competition. To overcome pricing pressures, vendors are beginning to offer more differential features such as device accessories. In addition, form-factor reduction has gained importance and vendors are now presenting additional features at the same price.
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Product Roundup:
Power Supplies
Dual Dimensions
YR2.Diode dual-input, single-output decoupling Dimension family module is rated 10–60 VDC wide-range input, has a 20 A output, and is UL508-listed. The diodes are enclosed in a 32 mm wide, rugged metal housing, and have spring-clamp terminals. Typical applications are redundancy, battery charging and backup, isolation of sensitive loads and buffered branches. Puls Power Supplies; 630-587-9780; www.puls-power.com/us
Switch Hitter
PSM24-090S-N Rhino switching power supply includes 24 VDC, 3.75 A, 90-W output, DIN rail mounting, a slim metal case with pluggable screw terminal connector, 85-264 VAC auto-selectable input, constant-current short-circuit protection, as well as UL508, 1950 and CE-compliance. It has a dual-color status indicator LED, remote on/off contact and NPN output. AutomationDirect; 800/633-0405; www.automationdirect.com
Power to the PoEple
PSM275 power supply has integrated 24-port power over Ethernet (PoE) injection for switch and PBX applications. With 12 VDC output voltage for switch and 50 VDC output voltage per port in PoE, it can implement eight to 24 ports, and can be powered from either wide-range AC input, 90-265 VAC, or a single 44-57 VDC input. It has power factor correction and full compliance to European and U.S. EMC requirements. Phihong; 510/445-0100; www.phihong.com
Hot and Cold Power Housing
Logo! power supply provides 24 VDC/4 A while delivering up to 96 W of power in a 90 mm-wide housing. Units come with output voltages of 5, 12, and 15 VDC. Input ranges from 85-264 VAC. The models operate from -20 to 55 ºC, and have a standard green LED operating status indicator and a potentiometer to adjust the output voltage on the front of the modules. Siemens E&A 800/964-4114; www.siemens.com/sitop
More Trunk Space
TrunkGuard fieldbus power supplies provide up to 350 mA power for two, four or eight Foundation and Profibus PA fieldbus segments. Each carrier provides mounting positions for multiple segment power conditioners and has built-in connectors for two DC supplies (18-32 V). Segment wiring is via conventional screw-clamp terminals or controller-specific connectors. On-board surge protection is optional. MooreHawke; 818/894-7111l; www.moorehawke.com
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