Global ET Logo

Global ET Logo Text

 

Global ET Power Control Unit (SIMPCU) Title Graphic

SIMPCU FAQs

Putting Software-In-Motion Since 1994

 

SIMPCU Brochure


 
Automation Alley

Global ET Power Control Unit (SIMPCU) Module Graphic

What is a SIMPCU?

A SIMPCU is a Power Controller Unit that is a solid-state smart switch that provides point-of-load and circuit level distributed monitoring, control, and protection of power producing and consuming devices.  Global ET's Software-In-Motion technology enables the SIMPCU to perform advanced functions not present in conventional power electronics.

Global ET Power Control Unit (SIMPCU) FAQs Photo Graphic

How is a SIMPCU used?

The SIMPCU is typically inserted as a power control device to programmatically control the flow of electrical current and can be connected directly to a power source or load. The SIMPCU can operate as stand-alone or be networked with other SIMPCUs or a SIMPMC to from a controlled power network.

 

How does a SIMPCU differ from a Contactor or Relay?

The SIMPCU is a solid state (semiconductor) device capable of switching up to 15 kHz. Contactors and relays often operate with mechanical contacts that have a finite number of cycles before failure and are limited to electro-mechanical switching properties.

 

How does a SIMPCU differ from a Power Supply or Function Generator?

Not only is the SIMPCU capable of producing various composite voltages, it also can produce waveforms with high load currents. The SIMPCU is also rugged and packaged for embedded applications, such as an engine compartment.

 

Can I use a SIMPCU by itself?

Yes! The SIMPCU can be configured and wired to control a single power device, such as high volume fan. With external sensing capabilities, the SIMPCU can also be programmed to perform closed loop control.  It can also be used to soft start and soft stop a motor to eliminate current inrush transients.

 

How can I communicate to a SIMPCU?

The standard industrial communication to the SIMPCU is via a Controller Area Network (CAN). Communication options include ethernet, wireless, Modbus, etc.

 

What happens if a SIMPCU fails?

In an event that the SIMPCU is subjected to an extreme power condition, the SIMPCU can be configured to default to a close-circuit or open circuit mode.

 

How can I benefit from the SIMPCU's PWM capability?

The Pulse Width Modulation (PWM) functionality of the SIMPCU allows for a variable pulse train output than results is a controlled voltage and current. A classic use of this functionality is for soft-starting an electric motor. A motor typically requires a large inrush current to rotate. A controlled PWM can ramp start the motor in a fashion that eliminates the severe inrush current. This PWM functionality also provides a convenient dimming method for controlling lighting.

 

How is the SIMPCU protected against reverse polarity?

Should the SIMPCU be connected in reverse, it will conduct as a short circuit.

 

How efficient is the SIMPCU?

The SIMPCU has been tested to achieve up to 99.7% efficiency!

 

Can the SIMPCU produce a sawtooth waveform?

Yes! The SIMPCU can produce nearly any waveform including sine, square, triangle, sawtooth, etc. The SIMPCU can be configured to transition to simulate power dips and other challenging power signatures. This is used to stress-test and evaluate load, sensor, and system robustness when operating under noisy power conditions. Systems include automotive, military vehicle, heavy truck, marine, aircraft, etc.

 

How can I configure the SIMPCU?

The SIMPCU can be configured from a simple user friendly software interface.

 

What is the onboard sensing capability of a SIMPCU?

The SIMPCU has 13 10-bit general purpose ADC channels that can be used to measure temperature, speed, pressure, etc.

 

Can I control a network of SIMPCUs from my computer?

Yes! The SIMPCU has been designed with the SIMPMC to perform system wide power management and control. The SIMPMC has ethernet connectivity, therefore it could become part of a private local area network.