What it means
F07575 ("Drive: Motor encoder not ready") is signalled by the motor encoder — encoder 1 on its Sensor Module: the encoder reports that it is not ready. The drive coasts down (OFF2-type reaction) and will not run again until the fault has been acknowledged.
Why it appears
- The motor encoder signals that it is not ready.
- Initialization of encoder 1 (motor encoder) was unsuccessful.
- The function 'parking encoder' is active (encoder control word G1_STW.14 = 1).
- The encoder interface (Sensor Module) is deactivated (p0145).
- The Sensor Module is defective.
What to check
- The manual's only remedy for this fault is: evaluate the other queued faults via encoder 1. F07575 itself only reports 'not ready' — the actual reason appears as a separate fault queued via encoder 1.
- Check whether the 'parking encoder' function is active (encoder control word G1_STW.14 = 1); while it is active, the encoder reports 'not ready'.
- Check whether the encoder interface (Sensor Module) has been deactivated with p0145.
- If neither another queued fault, nor the parking function, nor p0145 explains the message, the manual lists a defective Sensor Module as the remaining cause.
Parameters the manual names
- p0145 (Activate/deactivate encoder interface / Enc_intf act/deact) — an encoder interface (Sensor Module) deactivated with this parameter is one of the listed causes of F07575, so check the setting of this parameter.
Acknowledging and restarting
Eliminate the cause first, then acknowledge the fault immediately. Because the reaction coasts the drive down (OFF2), it will not start again until the fault has been acknowledged.
What differs between the drive families
Straight from the manuals' own fields — F07575 is not described identically everywhere.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | Infeed: OFF2 Servo: OFF2 (ENCODER) Vector: OFF2 (ENCODER) Hla: OFF2 (ENCODER) | — | Actual position/speed value incorrect or not available (11) | Sensor Module Encoder 1 | SINAMICS S120, S150 List Manual · p. 2849 |
| G130, G150 | Vector: OFF2 (ENCODER) Infeed: OFF2 | IMMEDIATELY | Actual position/speed value incorrect or not available (11) | Sensor Module Encoder 1 | SINAMICS G130, G150 List Manual · p. 1583 |
The drives this code lives on
F07575 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 SINAMICS fault F07575 mean?
The motor encoder (encoder 1 on its Sensor Module) signals that it is not ready. The drive coasts down and must be acknowledged before it will start again.
How do I fix fault F07575?
The manual's remedy is to evaluate the other queued faults via encoder 1: they show whether encoder initialization failed, the parking encoder function is active (G1_STW.14 = 1), the encoder interface is deactivated (p0145) or the Sensor Module is defective.
Can p0145 cause F07575?
Yes. One of the listed causes is an encoder interface (Sensor Module) that has been deactivated with p0145 (Activate/deactivate encoder interface).
Why does F07575 mention the parking encoder function?
While the parking encoder function is active — encoder control word bit G1_STW.14 = 1 — the encoder reports 'not ready' and the drive raises this fault.
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 F07xxx group · SINAMICS manuals · Siemens manuals