What it means
C01745 is a safety message of the SI Motion function (P1) in the CU; the manuals title it SI Motion P1 (CU): Checking braking torque for the brake test
. It appears when the scaling of the brake torque for the brake test — parameter p2003 — has been changed. Because the braking torque applied during the brake test follows this scaling, the drive demands that an acceptance test be carried out again for the brake test; this determines whether the braking test is still carried out with the correct braking torque. The message itself triggers no automatic drive response; it stays until all components have been powered down and up again.
Why it appears
- The scaling of the brake torque for the brake test has been changed using parameter p2003.
- As a result, an acceptance test must be carried out again for the braking test, so the drive can determine whether the braking test is still carried out with the correct braking torque.
What to check
- Carry out a POWER ON for all components — switch them off and switch them on again.
- If the brake test is used, repeat the acceptance test for the safe brake test.
Parameters the manual names
- p2003 (Reference force / F_ref) — sets the scaling of the brake torque for the brake test; changing this scaling is what raises C01745, and the remedy cross-references the parameter (Reference torque) when the acceptance test is repeated.
Acknowledging and restarting
C01745 is acknowledged by a POWER ON: switch all components off and switch them on again, and the manual says to carry this out immediately. After the power-on, repeat the acceptance test for the safe brake test if the brake test is used.
The same on every family
Every manual that describes C01745 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | POWER ON (IMMEDIATELY) | Safety monitoring channel has identified an error (10) | None | SINAMICS S120, S150 List Manual · p. 2696 |
| G130, G150 | NONE | POWER ON (IMMEDIATELY) | Safety monitoring channel has identified an error (10) | None | SINAMICS G130, G150 List Manual · p. 1476 |
The drives this code lives on
C01745 is described for G130, G150, S120, S150. These are the converters of those families in our catalogue — price on request.
Questions technicians ask
What does C01745 mean on a SINAMICS drive?
It is an SI Motion safety message in the CU: the scaling of the brake torque for the brake test, set in p2003, has been changed, so an acceptance test must be carried out again for the brake test to confirm it still uses the correct braking torque.
How do I clear C01745?
Carry out a POWER ON — switch all components off and switch them on again — immediately. If the brake test is used, repeat the acceptance test for the safe brake test afterwards.
Which parameter is behind C01745?
p2003 (Reference force / F_ref), the scaling of the brake torque for the brake test. Changing this scaling is what raises the message.
Does C01745 stop the drive?
No automatic drive reaction is assigned to the message. It stands as a demand to renew the brake test acceptance with a POWER ON and, where the brake test is used, a repeated acceptance test.
Codes next to this one
Source
Written from Siemens' own List Manuals and operating instructions; every number, designation and parameter on this page is checked against them before publication.
All SINAMICS codes: fault and alarm codes · the C01xxx group · SINAMICS manuals · Siemens manuals