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 Chromalox Model MiniMax 1 Single
Phase Solid State SCR Power Controller is
a highly versatile power pak with optional
plug-in 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 one electrical cycle
on and one cycle off. At 51% the output continues
with one cycle on / one cycle off and
gradually integrates one 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.)
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- 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:
- SCRs PIV 1500V Minimum (1400 Volts on 600 Volt model)
- Isolated Semiconductor Power Blocks are used on all Current Ratings
- I2t Fusing
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
- Optional Shorted SCR Detection
- MOV
For more features refer to catalog page PDF under the Technical Resources tab.