Keep up with power supplies

Jan. 20, 2014
As machine control systems become more sophisticated, power supplies can't let them down.

Machine builders always look to add value to their products and differentiate them from their competition. Better performing, more-efficient power supplies are on the list of components that these builders expect to help them add some of that value.

"To meet such challenges, power supply manufacturers continue to develop power systems that result in a practical system availability factor of 1 (always up)," says Paul O'Boyle, senior project engineer, Kepco.

"This means builders can offer customers enhanced reliability systems that will not go down because of single failures in the power system. Also, maintenance of the power system can be performed without having to bring down the process. Hot-swappable, redundant modules are building blocks that can be configurable to meet a wide variety of system requirements. Newer devices also offer the opportunity for system upgrades and mid-life enhancements of legacy equipment without the need for costly and time-consuming rewiring.

O'Boyle says another trend is plug-and-play power systems. "These customized power solutions let the machine builder focus on its core competencies and rapidly install preconfigured systems."

Also read: How much effect will linear power supplies’ EMI have on machine controls?

As factory and machine controls become more computerized and automated, power supply designs are being driven to incorporate digital communication capabilities, adds Alex Karapetian, director of sales and marketing for Acopian Power Supplies, noting several other trends that drive improvements in power supply performance. "Trends in clean water technology and water purification drive the development of larger, current-regulated power supplies with reversible output polarities," he says. "Cathodic/anodic protection technology drives the development of larger, current-regulated power supplies with remote programming capability; LED technology is driving the development of smaller, current-regulated power supplies; and solar power technology drives development of higher-power dc-dc converters and dc-dc converters with wider input ranges."

Multiple Choice Power
DPS range of ac/dc, DIN-rail mount, 5-, 10- and 18-W, class 2 power supplies have efficiency to 89%, are short-circuit protected, and have an integrated internal input filter, all in 22.5-mm-wide plastic enclosures. Larger power supplies in metal enclosures provide 30, 60, 120, 240 and 480 W. They have an 85- to 265-Vac input range and a standard 24-Vdc output, with 5-, 12- and 48-V versions available.
IMO Precision Controls
(817) 375-0023

Extra Low
24-Vdc power supplies provide safety extra-low voltage (SELV), according to EN 60950, offer 90–260-Vac input range, and output voltage that can be adjusted between 22.5 and 28.5 Vdc, with output current strengths of 2.5, 5, 10 or 20 A. They’re Class I, Div. 2-certified and rated IP20. The devices can be run in parallel for applications that require redundancy, and they include overload protection to 150%.
(800) 544-7769

Cool Energy
Single-phase S8VK-G switching power supplies withstand vibration. Optional S8VK-R redundancy units provide smooth switching between two power supplies. A momentary power boost of 120% of rated current increases device life when used in inductive-load applications. Built-in overload and overvoltage protection also help ensure stability.
Omron Industrial Automation
(866) 88-omron

Small, But Powerful
QS40.241 power supply with 24-V, 40-A output is 125-mm wide and provides a wide range of inputs with 94.6% efficiency, plus 50% BonusPower, active power factor correction, dc-OK relay contact, remote shutdown and load sharing for parallel use.
(630) 587-9780

Power on the Wires
Sitop UPS 1600-dc uninterruptible power supply (DC-UPS) protects multiple controllers or industrial PCs from power losses and damage resulting from power failures. With two Ethernet interfaces, it integrates into an Ethernet network or can be parameterized, diagnosed and integrated via Profinet into a totally integrated automation engineering environment. It’s available with 10- and 20-A outputs.
Siemens Industry
(770) 751-2000

Versatile Power
Model 722814, 3-ph, 24-Vdc, DIN-rail-mountable power supply is more than 92% efficient, provides 150 A for 5 s during over current situations, and has a micro controller for managing custom configurations, such as output power monitoring, remote on/off, remote measurement of output current and voltage. It has battery-charging capability for up to 1000 Ah.
(800) 447-2371

User Programmable
XCSG2401 series DIN-rail-mounted power supply has +92% efficiency, a microprocessor control and universal three-phase input, and is available with 24-, 48-, 72- or 170-Vdc outputs, current output to 100 A and power boost of 150 A. Front-panel LCD provides programming instructions for setting alarms, remote monitoring, remote shutdown of the output, battery charging, operating modes and more. A pluggable connector is used to simplify wiring to the different functions, and an event log is maintained for keeping a status history of operation parameters.
(877) 650-5160

Tolerates Your Faults
HSF series hot-swappable, plug-in power supplies are designed to be combined in an N+1 fault-tolerant power system. Built-in, forced-current sharing and O-Ring diodes are provided. HSF also can be used independently as a multi-output supply. The devices are available in 1U and 3U sizes.
(718) 461-7000

Power and More
PS6R expandable power supplies in 120-, 240- and 480-W models achieve up to 93% efficiency and have expansion modules, including dc-dc converters that let three separate voltages be used simultaneously. A branch terminal module provides additional wiring terminals. A low-voltage alarm output with NPN contact and LED indication is available. Each model is UL- and TUV-approved, CE-marked, and complies with EMC and LVD directives.
(800) 262-4332

With Power Comes Control
Epsitron 787-1675 power supply has an integrated UPS controller for local and remote monitoring and temperature-controlled charging. It has actual temperature sensor feedback for optimal charging and provides status of battery condition and advanced warning of battery life. The power supply accepts an input range of 85 to 264 Vac and provides backup battery power to loads up to 5 A at 24 Vdc, has a -25 to 70 °C operating range and is 89% efficient.
(800) din-rail

Rack or Bench
450-W, 1U, programmable, single-output, ac-dc power supplies in rack and benchtop models are available in 135 voltage ratings of 1 to 135 Vdc and current ratings to 40 A. They handle universal 95 to 265 Vac, 49- to 420-Hz input with active power factor correction (PFC) of 0.99. Units are configurable with an optional fixed auxiliary output of between 3.3 and 125 Vdc, up to 180 W. Front panel supports linear controls for precise adjustment and optional digital LED voltage and current meters.
(610) 258-5411

Power Is Universal
Rhino PSE switch-mode power supplies have universal inputs of 85–264 Vac in single- or dual-output models. Output voltages include 5, 12, 15 and 24 Vdc; and ±12 and ±15 Vdc. Single-output models provide a maximum output range of 15–60 W, and dual-output models provide 15 and 30 W. Screw terminal blocks provide easy connection, and the series is short-circuit and overload protected.
(800) 633-0405

Do One Thing Well
Uno Power power supplies offer basic functionality for 24-Vdc and 12-Vdc applications ranging from 30 to 100 W, with a mean time between failure of more than 700,000 hours. The devices have industrial polycarbonate housing and are rated for operation from -25 to 70 °C. Wide input range of 85-264 Vac allows international use.
Phoenix Contact
(800) 322-3225

Highly Efficient
Emparro power supply has a 95% efficiency rating, Power Boost for up to 150% more power for up to 4 s Output voltage is controlled with a constant current and is limited to 100% of the nominal current (or to 150% in Power Boost mode). An alarm contact on the circuit enables remote diagnostics of short-circuits, overloads and high temperatures.
(770) 497-9292

Monitor Your Health
PS3500 diagnostic module monitors the health and efficiency of PS3500 power supplies and primary side power conditions. The module provides real-time diagnostics with configurable warning and alarm levels, and alerts to irregularities, faults and impending failures. PS3500 power supplies are up to 91% efficient with selectable wiring configurations, enabling an N+1 or N+N redundant mode. N+1 and N+N redundancy guarantees system integrity and performance, even during module failure and replacement.
(330) 486-0002

Network Power
TFE3000-54, 3,000-W, 1U hot-swap power supply with 80 Plus Platinum efficiencies and 33.48 W/in3 power density offers a floating dc output of 54 V, adjustable from 42 to 55 Vdc and suitable for Power over Ethernet (PoE) and networking applications. It has a standby output of 3.3 or 5 V rated for 2A, digital I2C/PMBus status and control, and a single, rear, blind-mate connector for ac input, dc output and status/control connections. Units are safety approved to cTUVus 60950-1 and bear the CE Mark.
(416) 630-8108

Standby to Power Up
Tracopower TPC family of DIN-rail power supplies have low standby power consumption and a high efficiency across entire load range. The series consists of 30-, 55-, 80- and 120-W units in lightweight, compact, robust, plastic casings. A module is available for parallel and redundant operation with true current sharing.
Traco Electronic/PowerGate
(408) 588-1750

Power Is Easy
EZPPS programmable power supplies in 30-, 60- and 90-W models include a three-digit and two-digit LED display for voltage and current readouts and a maintenance timer to alert expected lifetime of the unit. The units are rated for operating temperatures -25 to 60 ºC, with 95% relative humidity. The 24-Vdc output has less than 100 mV peak-to-peak ripple, with 1% load regulation; output voltage adjustable from front plate, +5% to -10%; and 85-264 Vac universal input.
(877) 774-3279

Isolated, switching power supplies with universal 100- to 250- Vac input for use with Snap PAC System hardware include a built-in fuse, on/off power switch and LED indicator. Snap-PS5U provides 5 Vdc for loads to 5.0 A for a rack-mounted Snap PAC I/O processor or rack-mounted controller plus associated I/O modules. Snap-PS24U provides 24 Vdc at 1.25 A to power a Snap PAC S-Series controller, or to provide loop power for isolated current-loop analog modules.
Opto 22
(800) 321-opto

Eight Is Enough
D1U86G 460 W front-end power supplies achieve a minimum efficiency of 92% at 50% full load. The efficiency reduces host system cooling requirements and contributes to power savings. The power factor corrected units use universal 90-264-Vac input and feature hot-swap and hot-plug capability and droop current sharing for up to eight supplies to be connected together.
Murata Power Solutions
(508) 964-5117

Make It Break
Modular Capacity unit for Pro-M dc power supply along with suitable circuit breakers ensures a fault is restricted to its single loop by forcing its circuit breaker to trip. The modules have an operating temperature range of -25 to 70 °C, and approvals from CE, TUV, GL, GOST and cULus.
(800) 849-9343

Pick an Output
ZWS10-30B open-frame power supplies with outputs of 10, 15 and 30 W consume less than 0.5 W under no-load conditions operating at 85–265 Vac input. These single-output units are available with 3.3-, 5-, 12-, 15- or 24-Vdc outputs and can operate at full load with convection cooling from -10 to 50 °C ambient temperatures.
TDK-Lambda Americas
(800) 526-2324

Variable Power
SHP power supplies can configure up to 24 output combinations of 2-60 Vdc with a maximum power of 4,920 W, and intelligent modules let users choose between I2C or CANbus/RS-485 communications. They have single- and three-phase inputs, overload protection on all outputs, and power-factor correction. GUI-based configuration software enables monitoring real-time performance of the power supplies.
(877) 999-7652

Can’t Be Interrupted
Bulletin 1609-D industrial uninterruptible power supply (UPS) provides backup ac power to the control cabinet to bridge dips, sags or brief power losses. If necessary, it will facilitate a safe shutdown of industrial controls. EtherNet/IP module is available. Integrated remote on/off and dry I/O contacts meet code requirements to allow proper shutdown of the UPS when the control panel is open and closed, and provide remote monitoring and control of the UPS. Expandable battery capacity extends run-time, and included software allows for remote monitoring and configuration.
Rockwell Automation
(440) 646-3434

Power For All
24-Vdc power supplies designed for CompactRIO, Compact FieldPoint, NI Single-Board RIO, and NI Smart Cameras have operating temperature range -25 to 70 °C with full output power between -25 and 60 °C. Power reserves of 20% or 50% are available for dynamic loads. Connections via tool-less, spring-clamp terminals, and DIN-rail mounting and panel-/side-mount accessories are available.
National Instruments
(800) 258-7022