MiniMax 2 - Three Phase, 2 Leg SCR Power Pak Controller

MiniMax 2

Three Phase, 2 Leg SCR Power Pak Controller

120-600 VAC @ 30-75 Amp
Automatic 50/60HZ Line Sensing
User Adjustable Firing Modes Include:
   - On/Off Control Inputs:
     120Vac, 240Vac, 5-32Vdc Dry contact Closure
     Proportional Zero Cross or DOT Firing Power Control
Inputs:
   - 4-20mA, 0-5 VDC, 1-5 VDC, 0-10 VDC
   - Remote Manual Adjust,
   - Remote Auto Manual Switch
Flexible I/O Power Wiring
Shorted SCR Detection (option)
Easy Customer Interface
Remote Stop
Electronically Protected with Temperature Warning and Shutdown System
Compact Size and Construction
dv/dt Transient Voltage Protection
MOV Protection
DOT Fired with Single or Three Cycle Resolution (Jumper selectable)
Third-party certifications: cULus, CE

The MiniMax Series is specifically designed for the OEM market. The plug-in options, flexible I/O power wiring, space saving footprint, I2t fusing and universal approvals make it an excellent candidate for your product.

The MiniMax 2 is a Solid State, highly versatile power pak with optional plug-in and Shorted SCR Detection Boards. Firing modes can be switched between On/Off and proportional Zero Cross or DOT Firing power control at any time based on process needs.

Chromalox’ exclusive DOT (Demand Oriented Transfer) firing switches the fewest number of cycles to provide the most precise zero crossover control. At 50% output the unit’s output alternates between three electrical cycles on and three cycles off. At 51% the output continues with three cycles on / three cycles off and gradually integrates three extra “on” cycle for the additional one percent. With the exception of phase angle firing, DOT firing is the most precise method of SCR control. DOT firing is preferred in many applications because phase angle firing creates unwanted RFI. DOT is excellent for applications where consistent heater/process temperature control is critical.

The MaxPac Viewer Configuration Software allows users to program a variety of parameters and settings into their MaxPac I, II, III and MiniMax I, II, and III power controllers. Power management, alarm monitoring, firing mode, and cycle time adjustment are just a few of the settings available. The software also has a service platform for troubleshooting and maintenance on the spot.

MaxPac Viewer: Configuration Software Download
(Note: New configuration software releases occur without notice. If you need to update your release, you must first uninstall your current version prior to installing the latest release. This may be done in Programs and Features located in the Windows Control Panel.)

MaxPac Power Controller Configuration Software

Resistive Heaters
Electric Ovens
Furnaces
Kilns
Environmental Chambers

Mechanical Features:

LED Indication of Firing
Customer Control Connections are made on a Plug-In Screw Type Terminal Block
Optional Remote Manual Adjust and Auto/Manual Switch
Heatsink Mounted Temperature Sensor

Electrical Features:

PIV 1200V Min at 480 VAC PIV 1500V Min at 600 VAC
Isolated Semiconductor Power Blocks are used on all Current Ratings

Safety Features

Personnel Safety:

Ground Potential Heat Sink
SCR to Heat Sink Isolation

Equipment/Process Safety:

Input to Output Isolation
dv/dt Transient Voltage Protection
I²t Fusing for SCR Protection
Remote Shutdown Input
Optional Shorted SCR Detection

For more features refer to catalog page PDF under the Technical Resources tab.

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