7
Electrical installation
Safe digital outputs (F-DO.)
Manual – MOVISAFE
®
CS..A Safety Card (Version 2)
63
7.6.6
F-DO_STO output
The safety card has one safe output for the device-internal STO function of the in-
verter. This output is electrically connected to the STO terminals of the device. This is
why you must not connect anything to the external terminals.
With a processing cycle of less than 1 minute, a maximum switching frequency of
10 Hz is possible. In continuous duty (> 1 minute), a maximum switching frequency of
0.5 Hz is possible.
The safe F-DO_STO output is always operated in the connection type "1-pole
sourcing" and must only be used for the STO function of the inverter. If the diagnostics
implemented for the safe F-DO_STO output detects a fault, the error response "output
error" occurs, which blocks all outputs.
Additional extended diagnostics can be activated for the F-DO_STO output. If a fault is
detected by diagnostics, the "Output error" error response occurs, which blocks all
outputs.
Extended diagnostics allows for the following settings:
•
Setting "Test when deactivated"
If this setting is active, the functionality of diagnostics in the STO connection of the
inverter is tested right after the STO function is deactivated.
•
Setting "Test when deactivated and time monitoring"
This setting is identical to the "Test when deactivated" option. The safety card trig-
gers an additional warning if diagnostics is not executed within 8 hours. Time mon-
itoring works only properly if the card deactivates the STO function before the dia-
gnostics interval of 8 hours is elapsed. The test is not performed when switching
on the card.
28482271/EN – 03/2019
