What it means
The Terminal Module (TM) has detected an error while evaluating the temperature sensor connected to channel 3. Depending on how the drive is configured, the same condition can also be issued as a fault (F) or with no reaction at all (N) instead of this alarm.
Why it appears
- An error occurred when the Terminal Module evaluated the temperature sensor on channel 3.
- Alarm value 1: wire breakage, or the sensor is not connected.
- Alarm value 2: the measured resistance is too low.
What to check
- Make sure that the temperature sensor on channel 3 is connected correctly.
- If the message persists with the sensor connected correctly, replace the sensor.
Reading the message value
The message value carries the alarm value, which the drive also holds in r2124; interpret it as a decimal number:
- 1 — wire breakage or sensor not connected. KTY84: R > 1630 Ohm (TM150: R > 2170 Ohm), PT100: R > 194 Ohm, PT1000: R > 1720 Ohm (TM150: R > 1944 Ohm).
- 2 — measured resistance too low. PTC thermistor: R < 20 Ohm, KTY84: R < 50 Ohm (TM150: R < 180 Ohm), PT100: R < 60 Ohm, PT1000: R < 603 Ohm.
Parameters the manual names
- r2124 — holds the alarm value for this message; read it as a decimal number to tell whether channel 3 reported a wire break or missing sensor (1) or a resistance that is too low (2).
Acknowledging and restarting
As an alarm, the message requires no acknowledgement. If the drive is configured to raise the same condition as a fault, it is acknowledged IMMEDIATELY (POWER ON)
.
The same on every family
Every manual that describes A35923 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | External measured value / signal state outside the permissible range (16) | Terminal Module (TM) | SINAMICS S120, S150 List Manual · p. 3245 |
| G130, G150 | NONE | NONE | External measured value / signal state outside the permissible range (16) | Terminal Module (TM) | SINAMICS G130, G150 List Manual · p. 1907 |
The drives this code lives on
A35923 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 alarm A35923 mean on a SINAMICS drive?
The Terminal Module has hit an error while evaluating the temperature sensor on channel 3. The same condition can also be issued as a fault (F) or with no reaction (N), depending on the configuration.
What do alarm values 1 and 2 in r2124 mean for A35923?
Value 1 means wire breakage or the sensor is not connected; value 2 means the measured resistance is too low. The exact resistance limits depend on the sensor type (KTY84, PT100, PT1000, PTC) and on whether a TM150 is used.
How do I clear A35923?
Make sure the sensor on channel 3 is connected correctly and replace the sensor if the message persists. As an alarm, the message itself needs no acknowledgement.
Does A35923 stop the drive?
No. The manuals associate no automatic reaction with this condition, so the drive keeps running; the message only tells you that the sensor signal on channel 3 cannot be evaluated.
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 A35xxx group · SINAMICS manuals · Siemens manuals