Atlas Sound 3, 1 ECM Electrical Control Modules, Internal Features of the ECM Modules, Ecm-Racewy

Owner’s Manual	ECM-RACEWY
	ECM-20, ECM-20M, & ECM-30

ECM (Electrical Control Modules)

Differences Between the ECM-20 & ECM-20M Modules

The ECM-20 & ECM-30 do not support the same current monitoring or EMI/RFI Filter feature as the ECM-20M, ECM-20SH and the ECM-15SH models. However, they does support AC Spike and Surge Suppression, AC Mains Voltage monitoring, EVS circuitry, and Remote Activation.

We suggest using an ECM-20 module instead of an ECM-20M in applications where some of the features would be redundant because of the electrical location of the module. Using a less expensive ECM module where redundant circuitry is not needed could lower the overall cost.

Example: One 20A incoming AC line where two sequenced AC outlets are required. Use one ECM-20M and one ECM-20 module

wired in parallel. Explanation: If the AC Mains system required a sequenced outlet and did not require more than 20A of service for a portion of the AC power system, an ECM-20M module can be placed in parallel with an ECM-20 module. It is not necessary to have amperage readings from both ECM Modules because you can read the current from the ECM-20M Module. It is not necessary to have amperage readings from both ECM Modules if they were run in parallel because, on the same incoming AC line, they would have the same current draw. The EMI and RF filtering also is applied to both ECM modules on the same AC line leg and there is no need for redundant filtering. Note: In this wiring configuration, voltage monitoring to see if the modules are active and have extra surge protection. See ECM Module wiring configurations.

Internal Features of the ECM Modules

•EMI/RFI Filters - ECM noise filtering for eliminating unwanted Radio Frequency Interference (RFI) that is commonly introduced into the AC lines by nearby radio transmitters or wireless products. EMI filters are incorporated to reduce noise from Electromagnetic Interference (EMI) from such items as electric motors, switching power supplies and lightning. The benefit of these filters can be seen on video products or audibly by reducing static pops and external signal interference.

Note: Not available on ECM-20 or ECM-30 type modules.

•AC Spike Protection - ECM modules feature AC spike suppression. AC Spikes, or Transients, are commonly caused by lightning storms or utility power plant grid switchovers. The amount of energy that can be injected into the power system can be immense with voltages reaching 6kV or amperage peaks of 3000A. These spikes are very fast and usually only last for a very short period of time. To protect against this potential problem incoming AC Mains have special suppression circuitry to eliminate the unwanted energy. This circuitry is very fast and can suppress unwanted energy within a nanosecond, while sustaining the suppression up to 2 milliseconds, thus ensuring virtually trouble free protection.

•AC Surge Protection - High line can also be known as surges. Surges usually are a slower steady state rise in voltages ranging from 128VAC and up. They can be caused from fluctuations from the utility company’s power lines or industrial equipment turning On/Off when on the same power leg of the building’s incoming AC.

•EVS Protection - If an ECM Module is connected to the ECS-6RM, the ECS-6RM has built-in intelligence that monitors the AC lines from the ECM modules and will inform you of potentially damaging voltages. If the AC Mains voltage is between 128VAC and 132VCA or 107VAC and 101VAC the display will flash an error code indicating a potential fault has occurred and you should check sensitive equipment. If an extreme voltage swing occurs above 128VAC or below 101VAC, the Extreme Voltage Shutdown (EVS) protection circuit will automatically turn all remote ECM modules Off until the system is manually reset. The EVS feature can be defeated if required via the ECS-6RM EVS bypass switch. Note: Not available on ECM-20 type module.

•Over Current Protection - In the case of excessive current draw at the ECM module. An internal Slow Blow fuse will open to protect the devices that are connected to the ECM module.

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: 800.876.3333 • Fax: 800.765.3435

– 11 – AtlasSound.com

Specifications are subject to change without notice.