Schneider Electric 17S Series User Manual
65
Fault Relay and Digital I/O Connection, continued
Using Functions
Pre-programmed
into the Drive
Pre-programmed
into the Drive
Fault Relay- The isolated fault relay contacts are closed during normal operation
and open when a fault condition exists. The relay state is not affected by the enable
signal, I
and open when a fault condition exists. The relay state is not affected by the enable
signal, I
2
t limit or warnings. All faults cause the Fault RA/RB contact to open and
the switch-off of the output stage. A list of error messages can be found in chapter
Troubleshooting.
Troubleshooting.
Digital Inputs 1, 2, 3 and 4 - You can use the four digital inputs to initiate pre-
programmed functions that are stored in the drive.
programmed functions that are stored in the drive.
Digital Outputs 1 and 2 - You can use the two digital outputs to send messages
from pre-programmed functions that are stored in the drive.
from pre-programmed functions that are stored in the drive.
Enable Input - This is a dedicated, level-sensitive (as opposed to edge-sensitive)
hardware input which will enable the output stage of the drive when 24 Vdc is
applied and no fault conditions exist.
hardware input which will enable the output stage of the drive when 24 Vdc is
applied and no fault conditions exist.
Note: The hardware enable is powered up upon detection of state sense versus
transition sensitivity. Refer to the UniLink on-line help for software enable
information.
transition sensitivity. Refer to the UniLink on-line help for software enable
information.