ICM492D: Product Spotlight of the Month

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ICM Controls is an electronics control, monitoring manufacturer putting your safety at the top of mind. Our fully integrated facility allows us an opportunity to ensure our products are the most technologically advanced in the field. Most recently, we have made a few adjustments to the ICM492C to increase its overall performance and accuracy. With these changes, the ICM492C, single-phase line voltage monitor has evolved to the ICM492D, single-phase line voltage monitor. Below we’ve provided a brief overview on the importance of line voltage monitoring as well as outlined updates to the product as well as.

Why is it important to monitor incoming voltage?

It’s important to monitor incoming voltage because when your system is subjected to prolonged periods of a voltage imbalance, the motor windings overheat, and you’ll shorten the lifespan of your motor or compressor. As a rule of thumb, it is recommended that you contact a utility company directly if there is an imbalance approaching 3% or greater.

Why Use a Line Voltage or Phase Monitor?

These are vital add-on investments that help to protect valuable equipment against voltage imbalance and other power anomalies, including high and low voltage, phase loss, phase reversal, rapid short cycling and more. The better line voltage monitors on the market, are programmable and have a digital display that let you get real-time read outs of the incoming power. Plus, they offer fault-memory, so you can get an idea of where to go looking for a problem when on occurs.

Important to Keep in Mind – Line Voltage Monitors are Wired in Parallel

It’s important to note that line voltage monitors are wired in parallel which means that it does not control the contactor. It merely monitors the power that is coming into the system.

Now Let’s Look at Our Single-Phase Line Voltage Monitor – ICM492D

The ICM492D continuously monitors incoming line voltage for faults and displays RMS voltage on the digital display. When line voltage is appropriate, the ICM492D will close COM and N.O. relay contacts. When incoming line voltage is outside of the user selected parameters, the ICM492D will close COM and N.C. relay contacts and indicate a fault condition by flashing FAULT on display. The SELECT menu has the following user adjustable settings: voltage set point, time delay, over voltage, under voltage, control mode, and response time. Time delay prevents system short cycling caused by transient faults and rapid power interruptions. The response time on the fault condition can be adjusted to help reduce nuisance trips from transient faults. When Control Mode setting is selected ON, the ICM492D will close COM and N.O. relay contacts only when control voltage is present at Control Voltage terminals. The relay contacts can be used to direct drive the load if the current rating is not exceeded.

 

Specifications – Knowing the Difference Between the ICM492C and ICM492D

Standard features of the ICM492C Include:

  • Protects against over and under voltage, and rapid short cycling caused by transient faults and power interruptions
  • Adjustable voltage set point
  • Adjustable anti-short cycle time delay
  • Adjustable response time
  • Control mode (optional)
  • 5-fault memory
  • Universal line voltage input
  • Heavy-duty SPDT relay output
  • Universal control voltage input (for integrating a thermostat)

ICM492D Includes the Above Advantages Plus More:

  • Improved backlit digital display, easy to read in low light conditions
  • Re-designed buttons for increased durability
  • New micro-processor for improved accuracy
  • Displayed voltage calibration feature to match the RMS value of a voltmeter

Moving Forward the ICM492D will be included in the new Sentry 3N1

With a focus on innovation, our newest product solution the Sentry3N1 contains our best-in-class ICM492. The Sentry3N1 itself provides both surge protection and line voltage monitoring for single-phase residential equipment, creating an all-in-one solution.

Key Roles that the ICM492 Plays in the Sentry3N1:

  • Integral Anti-short cycle delay prevents short cycling the compressor and reversal of scroll compressors (some lower cost competitor options do not have this feature)
  • Easy to read and set up
  • Passive device wired in parallel with the line and breaks the contactor to shut down a load
  • Within the assembly the voltage monitor is replaceable should it ever become damaged

 

To learn more about the ICM492D watch our pre-recorded webinar here:

For more product information we invite you to look at our ICM492 product page. We are currently in a transition period to the ICM492D and will be updating our website to reflect these changes momentarily. Please check our social media pages or email us at marketing@icmcontrols.com to show your interest.