About the 239-AN
The 239-AN features a single isolated analog output, which operates on three selectable milliampere ranges:
The 239-AN also offers programmable output parameters, including adjusting phase current temperature for RTDs 1, 2, and 3, changing thermal capacity, and modifying the percentage of the full load.
The 239-AN is crucial for applications with varied motor loads operating near full capacity, allowing users to monitor for potential trips and adjust loads accordingly.
The 239-AN has Start Protection Management, which includes:
- Start protection, which can be disabled if not required.
- The setting the "disable starts" setpoint to "yes" allows the relay to bypass start protection, moving directly into overload curves and applying run conditions to protect the connected load.
- This setpoint can also be linked to a switch input; if the switch input is closed, start protection will be defeated when "disable starts" is set to "yes."
Another feature of the 239-AN is Mechanical Jam Protection, which:
- Features a "mechanical jam" programming function
- Is primarily used for protecting attached equipment like gearboxes, saws, compressors, and pumps