What it means
Alarm A32470 comes from Encoder 2: the connected encoder reports that it is dirty, and the Sensor Module Cabinet 30 (SMC30) signals this to the drive as a 0 signal at terminal X521.7. On the S120/S150 the condition is printed as Encoder 2: Encoder signals an internal error (X521.7)
, on the G130/G150 as Encoder 2: Soiling detected
. Depending on the drive configuration, the same condition can also be issued as a fault (F) or as an N message.
Why it appears
- A dirty encoder is signaled for Encoder 2: the Sensor Module Cabinet 30 (SMC30) applies a 0 signal at terminal X521.7.
- On the G130/G150 this 0 signal at X521.7 is described for the alternative encoder system interface on the SMC30; on the S120/S150 the same condition is worded as the encoder signaling an internal error.
What to check
- Check the plug connections.
- Replace the encoder or the encoder cable.
Acknowledging and restarting
As an alarm, A32470 requires no acknowledgement. If the drive is configured to issue the same condition as a fault, the fault must be acknowledged IMMEDIATELY; as an N message, no acknowledgement is needed either. In every variant the drive itself takes no stop action for this condition.
The same on every family
Every manual that describes A32470 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Actual position/speed value incorrect or not available (11) | Encoder 2 | SINAMICS S120, S150 List Manual · p. 3112 |
| G130, G150 | NONE | NONE | Actual position/speed value incorrect or not available (11) | Encoder 2 | SINAMICS G130, G150 List Manual · p. 1789 |
The drives this code lives on
A32470 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 A32470 mean?
Encoder 2 signals that it is dirty: the Sensor Module Cabinet 30 (SMC30) applies a 0 signal at terminal X521.7, and the drive raises A32470. On the S120/S150 it is called an internal encoder error, on the G130/G150 soiling.
How do I fix SINAMICS alarm A32470?
Check the plug connections and, if the 0 signal at X521.7 remains, replace the encoder or the encoder cable. That is the full remedy the manuals give for this message.
Does A32470 stop the drive?
No. The drive takes no stop action for this condition in any variant; only when it is configured as a fault must it be acknowledged IMMEDIATELY.
Where is terminal X521.7?
It is the terminal on the Sensor Module Cabinet 30 (SMC30) at which the encoder reports soiling with a 0 signal. On the G130/G150 this is described for the SMC30's alternative encoder system interface.
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 A32xxx group · SINAMICS manuals · Siemens manuals