I set up a difference lower limit alarm, but no alarm is output.

In the case of the difference lower limit alarm, the alarm setting is a negative value. For example, you need to set it to "-5°C."

Advanced Application UT75A

Temperature Controller with increased monitoring and operating capabilities
Mid-level UT55A/UT52A

Increase monitoring and operating capabilities
UP35A/UP32A

Program Controllers with 4 patterns, 40 segments, and ladder sequence functions
UP55A

Program controller with 30 patterns, simultaneous monitoring, and ladder sequence function
UT32A-D

Digital Indicating Controller with selectable 2-loop control and intuitive design
UT35A/UT32A

Increase monitoring and operating capabilities