65
Fault Relay and Digital I/O Connection, continued
Using Functions
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 n ot affected by the enable
signal, I2t 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.
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.
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.
Enable Input - This is a dedicated, level-sensitive (as opposed to edge-sensitive)
hardware input which will enable the output st age 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.