Power Controllers suit OEM applications.

Press Release Summary:




MiniMax(TM) 1P single phase, SCR Power Pak utilizes Phase Angle firing to modulate power of inductive or resistive load, providing resolution better than 0.1%. MiniMax 2 is a 3-phase, 2-leg unit. Both operate at 120-575 Vac at 30-75 A and are protected with temperature warning and shutdown system. MiniMax 3 3-phase, 6-SCR Power Pak offers On/Off and Proportional power control. It accommodates 3-phase Delta, 3-wire Wye, or 4-wire Wye connected loads.



Original Press Release:



New "MiniMax(TM)" Power Paks Offer Flexible Configurations and Fine Resolution for Fast Responding Loads



PITTSBURGH-January 10, 2003-Chromalox® announced today the introduction of "MiniMax(TM)" a new line of compact, fine resolution power controllers for OEM applications. This series of three products has flexible plug-in options, current limits, space-saving footprints, and universal approvals. These versatile units are ideal for applications that require fast responding loads where resistance changes as a function of temperature, such as resistive heaters, electric ovens, furnaces, kilns, environmental chambers, and more.

The MiniMax(TM) 1P is a single-phase, SCR Power Pak that utilizes Phase Angle firing to modulate power to an inductive or resistive load. This Phase Angle control has the advantage of proportioning every cycle, thereby providing a very fine resolution of power better than 0.1%.

A unique MiniMax Soft Start feature assures load power is gradually increased from zero to set value in the event of a power interruption. Additionally, a current limit can be used to protect the load, SCR controller, and total system from surge currents that could occur at startup. Adjustable Zero Gain, Manual Bias, and Current Limit potentiometers make calibration easy and reliable.

This power controller operates at 120-575 Vac at 30-75 amps. Isolated control circuit inputs are 0-5mA, 0-20mA, 0-50mA, 1-5mA, 4-20mA, 10-50mA, 0-5Vdc, and 0-l0Vdc.

The MiniMax(TM) 1 and 2 are solid state SCR Power Paks, with Chromalox' exclusive Demand Oriented Transfer (DOT) firing. DOT firing is a very precise method of SCR control and is excellent in applications where consistent heater/process temperature control is critical. This unique design switches the fewest number of cycles to provide the most precise zero crossover control, and virtually eliminates RFI. Thermal cycling and heater degradation are minimized with the system's fast response time. MiniMax 1 is a single-phase unit; MiniMax 2 is a three-phase, two-leg unit. Both units operate at 120-575 Vac at 30-75 amps and are electronically protected with a temperature warning and shutdown system.

The On/Off solid state control replaces a mechanical contactor for maintenance-free operation and can be used in conjunction with PID control. A proportional power controller utilizes the "Zero Voltage Switching" technique to modulate power for a wide range of resistive loads.

The MiniMax(TM) 3 is a highly versatile, three-phase, six-SCR Power Pak, with optional plug-in proportional firing and shorted SCR detection boards. Firing techniques include On/Off Power Control (Contactor) and Proportional Power Control (zero voltage switching, DOT fire). This unit offers the same specifications as the MiniMax 2, but with six SCR converters. It accommodates 3-Phase Delta, 3-Wire Wye, or 4-Wire Wye connected loads.

Price and Availability
MiniMax Power Paks are available for immediate delivery and pricing starts at $570.

For more information
MiniMax product data sheets (PDS) contain complete specifications and ordering information. To download the PDS and obtain pricing information, visit www.mychromalox.com or contact Chromalox at:

Telephone: 800-443-2640
412-967-3800
FAX: 412-967-5148
Address: Chromalox
103 Gamma Drive Ext.
Pittsburgh, PA 15238

About Chromalox, Inc.
For more than 85 years, customers have relied on Chromalox for the utmost in quality and innovative solutions for industrial heating applications. Chromalox manufactures the world's largest and broadest line of electric heat and control products, including heating components, immersion heaters, circulation systems, heat transfer systems, boilers, industrial and comfort air heating, heat trace cables, sensors and precision electronic controls. With multiple manufacturing, engineering, warehousing and sales locations throughout North America and Europe, Chromalox is a global supplier providing the highest level of customer support. Chromalox is headquartered in Pittsburgh, PA.

Products and company names listed herein are trademarks or trade names of their respective companies.

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