Commissioning Test For Sto Applications In Automatic Restart Mode - Danfoss iC7 Series Operating Manual

iC7 Series Functional Safety
Operating Guide
Test procedure
9 Ensure that the motor remains in the coasted state, and any connected relays remain activated.
10 Send a reset signal via fieldbus, digital I/O, or the control panel.
11 Ensure that the motor becomes operational and runs within the original speed range.

5.2.2 Commissioning Test for STO Applications in Automatic Restart Mode

Table 7: Commissioning Test in Automatic Restart Mode
Test procedure
1 Power on the frequency converter.
2 Check that no safety faults are present.
3 Start the motor.
4 Remove the 24 V DC voltage supply to both STO input terminals using the safety device while the frequency
converter drives the motor (that is, the mains supply is not interrupted).
5 Verify that the motor coasts.
It may take a long time for the motor to stop.
6 If a control panel is mounted, check if STO activated is shown on the control panel.
If the control panel is not mounted, check if STO activated is listed in the event log.
7 If the STO feedback is utilized, verify that STO is activated by checking the state of the STO Feedback. See
tration 4.
8 Reapply 24 V DC to STO inputs.
9 Ensure that the motor becomes operational and runs within the original speed range.
16 | Danfoss A/S © 2023.03
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AQ319741840653en-000201 / 136R0268