The MaxPac Series is specifically designed
for the OEM market. The plug-in options, flexible
I/O power wiring, space saving footprint,
optional lug kits, I2t fusing and universal
approvals make it an excellent candidate for
your product.
The Chromalox Model MaxPac I 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’s 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.
- 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
- Built-In Power Distribution
Electrical Features:
- SCRs PIV 1200V Minimum (1500 Volts on 600 Volt model)
- Isolated Semiconductor Power Blocks are used on all Current Ratings up to 650 Amps
- UL 508 for units 650 Amps and under
Safety Features
Personnel Safety:
- Ground Potential Heat Sink up to 650 Amps
- SCR to Heat Sink Isolation up to 650 Amps
- Touch-Safe Option
- CE Compliance: Line filters are required.
Equipment/Process Safety:
- Input to Output Isolation
- dv/dt Transient Voltage Protection
- Optional I2t Fusing
- Remote Shutdown
- Optional Shorted SCR Detection
- MOV
For more features refer to catalog page PDF under the Technical Resources tab.
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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