There are three types of output.

1. Individual output When a fault signal is input, an individual output contact signal corresponding to that fault item is output.
2. Major fault output When a fault signal is input to any of the fault items set to major fault, a major fault output contact signal is output. Any fault item can be set to major fault in the fault setting mode. This cannot be set in duplicate with minor faults.
3. Minor fault output When a fault signal is input to any of the fault items set to minor fault, a minor fault output contact signal is output. Any fault item can be set to minor fault in the fault setting mode. This cannot be set in duplicate with major faults.

There are two operating modes: non-lock-in mode (automatic reset type) and lock-in mode (manual reset type).