Commissioning; Safety Instructions For Commissioning; Commissioning Test; Commissioning Test For Sto Applications In Manual Restart Mode - Danfoss iC7 Series Operating Manual

iC7 Series Functional Safety
Operating Guide

5 Commissioning

5.1 Safety Instructions for Commissioning

See 2 Safety and the relevant drive operating guides for more instructions on safety. Always observe the instructions provided by
the motor manufacturer.
RESIDUAL ROTATION
The STO function can be used for asynchronous, synchronous, and permanent magnet motors. Two faults can occur in the power
semiconductor of the drive. When using synchronous or permanent magnet motors, a residual rotation can result from the faults.
The rotation can be calculated to angle = 360/(number of poles). The application using synchronous or permanent magnet mo-
tors must consider this residual rotation and ensure that it does not pose a safety risk. The situation is not relevant for asynchro-
nous motors.

5.2 Commissioning Test

After installation and before first operation, a commissioning test using STO is required. The commissioning test is also required
after each modification of the installation or application that involves STO.
After installing the safety functions, perform a commissioning test.
A successful commissioning test is required after the initial installation, and after each change to the installation or application
involving functional safety.
-
If the commissioning test fails, safe operation cannot be guaranteed.
To perform a commissioning test:
• See

5.2.1 Commissioning Test for STO Applications in Manual Restart Mode

7.2.1 Safe Torque Off Response is set to default setting Fault, reset required (manual reset).
• See 5.2.2 Commissioning Test for STO Applications in Automatic Restart Mode
ter 7.2.1 Safe Torque Off Response is set to Warning, no reset required (automatic reset).
5.2.1 Commissioning Test for STO Applications in Manual Restart Mode
Table 6: Commissioning Test in Manual 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
Illustration 4.
8 Reapply 24 V DC to STO inputs.
Danfoss A/S © 2023.03
W A R N I N G
N O T I C E
if STO is set to manual restart mode (parameter
if STO is set to automatic restart mode (parame-
AQ319741840653en-000201 / 136R0268 | 15
Commissioning
Approved
□
□
□
□
□
□
□
□