Danfoss iC7 Series Operating Manual page 19

iC7 Series Functional Safety
Operating Guide
Test procedure
8 If the control panel is not mounted, check if STO – Fault Ch A is listed in the event log.
9 Verify that the STO Feedback output does not signal an active STO. (The output signals a full STO only when
both channels are invoked.)
10 Give a start command to verify that the STO function blocks the drive's operation. The motor must not start.
11 Reapply 24 V DC to STO inputs.
12 Send a reset signal via fieldbus, digital I/O, or control panel.
13 Ensure that the motor becomes operational and runs within the original speed range.
14
Remove the 24 V DC voltage supply to STO input channel B terminals while the frequency converter drives the
motor (that is, the mains supply is not interrupted).
15 Verify that the motor coasts.
It may take a long time for the motor to stop.
16
If a control panel is mounted, check if STO – Fault Ch B is shown on the control panel.
17 If the control panel is not mounted, check if STO – Fault Ch B is listed in the event log.
18 Verify that the STO Feedback output does not signal an active STO. (The output signals a full STO only when
both channels are invoked.)
19 Give a start command to verify that the STO function blocks the drive's operation. The motor must not start
20 Reapply 24 V DC to STO inputs.
21 Send a reset signal via fieldbus, digital I/O, or control panel.
22 Ensure that the motor becomes operational and runs within the original speed range.
Danfoss A/S © 2023.03
Operation and Maintenance
Approved
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
AQ319741840653en-000201 / 136R0268 | 19