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CH2 - Energization of Relays

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eunit-wpts-500-cables (45K)

Energization Demo

(1.6 Mb, Audio and Slides, 100 second run time, requires Flash plug-in)


External power energization is now available for the easywire CH2 Tester. The CH2 Energization Unit (E Unit) is a separate test box (see top box to left) with 160 to 800 energization points. These points are not used as test points but to energize lamps, LEDs, relays or other devices needing external power. The energization unit is connected to a CH2 test system using the same cable as a standard expansion box.

With special Actuate and Energize commands now added to our easywire software version 9.0 you are able to design your test to accommodate a wide variety of external power needs.

  • Energization Points: 160 - 800 Points (in 160 pt. increments)

  • Max Current: 1 AMP

  • Power Supply Voltages: 5, 12, 15, 24 & 48 Volts.

  • Interfacing to E-Unit: Standard AC61-KF cabling

Each CH2 Energization Unit has a power supply port on the back of the box where you plug in your selected power supply. Cirris offers 5 different voltage level power supplies to fit your specific needs; IE: 5, 12, 15, 24 and 48 volts. You simply select the power supply to match the voltage of the relay coils, or other devices you wish to power. Only one power supply is plugged into the unit at a time.

For more information on the (E-Unit) we recommend that you view the Energization Demo presentation linked to from this page. (see above) and if more detailed information is required we suggest the following PDFs.

General Guidelines for Testing Relays PDF    |      Using the CH2 to Test Relays... (PDF)


powerplugture-300 (8K) eunit-closeup-500 (58K)




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