Issue:
Unable to get LTU software to communicate with and test Micrologic trip unit in Powerpact H, J, or L frame circuit breaker.
Step 1 below should resolve "A1 trip unit identification command failed" error.
Product Line:
Circuit Breakers
Resolution:
Unable to get LTU software to communicate with and test Micrologic trip unit in Powerpact H, J, or L frame circuit breaker.
Step 1 below should resolve "A1 trip unit identification command failed" error.
Product Line:
Circuit Breakers
Resolution:
- Check Help and About to see the version of software that you have. If it is anything less than 10.2.1, install the latest software from this link https://www.se.com/us/en/download/document/LTU_Test_Software/ .
- Install the 32 bit version even for 64 bit computers.
- Go to the Setup menu item, and select PC Communication Parameters.
- Under Serial port name, select com port with identifier: Maintenance Module.
- Under Channel, select USB Maint. Module
- Proceed with testing
- If there is a problem with either of the Step 2 items:
- Open Control Panel, double click on Device Manager.
- Scroll down to Ports, right click and Scan for hardware changes
- Expand the Ports tree and check for exclamation points "!". If you find one on the Maintenance Module port, right click and Update Driver Software
- Reset the UTA Maint. Module by unplugging from the computer and from the wall outlet for 20 seconds. Then plug in and reconnect.
- Go to Setup and PC Communication parameters again and check settings.
- Under Serial port name, select com port with identifier: Maintenance Module. If not available, move USB cable to a different USB port on your computer.
- Under Channel, select USB Maint. Module
- Go to Remote Functions and Get Micrologic Settings
- Proceed with testing.
Released for:Schneider Electric USA
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