What it means
A50003 is the alarm the manuals title COMM BOARD: Alarm 3, and it is reported by the CBE20 SINAMICS Link. The board signals that a specific telegram word (receive) is being used twice in the SINAMICS Link telegram configuration. The message carries two info values, printed as Info 1: %1 and Info 2: %2 — Info 1 is the address of the sender, Info 2 the receive telegram word concerned. Depending on the drive configuration, the same condition can also be output as a fault instead of an alarm.
Why it appears
- The CBE20 SINAMICS Link reports that a specific telegram word (receive) is being used twice.
What to check
- Read the alarm value in r2124 and interpret it hexadecimal as yyyyxxxx hex: yyyy is Info 1, the address of the sender, and xxxx is Info 2, the receive telegram word, each read in decimal.
- Check the SINAMICS Link receive assignment of the CBE20 for the flagged word: p8870 holds the SINAMICS Link PZD receive words and p8872 the SINAMICS Link PZD receive addresses.
- Correct the parameter assignment so that the flagged receive telegram word is assigned only once.
Reading the message value
- The drive fills the message value with two info values, printed as Info 1: %1 and Info 2: %2.
- Alarm value (r2124, interpret hexadecimal): yyyyxxxx hex — yyyy = Info. 1, xxxx = Info. 2.
- Info. 1 (decimal) = Address of sender.
- Info. 2 (decimal) = Receive telegram word.
Parameters the manual names
- r2124 — alarm value: read it here (interpret hexadecimal) to obtain Info 1, the sender address, and Info 2, the receive telegram word.
- p8870 — SINAMICS Link PZD receive word: check here where the receive telegram word flagged by the alarm is assigned.
- p8872 — SINAMICS Link PZD receive address: check here the SINAMICS Link receive address assignment when correcting the duplication.
Acknowledging and restarting
As an alarm, A50003 triggers no automatic reaction of the drive and needs no acknowledgement step of its own — the practical job is to correct the CBE20 SINAMICS Link parameter assignment so that no receive telegram word is used twice. If the drive is configured to output the condition as a fault instead, the entries specify the reaction NONE for the Infeed, Servo, Vector and HLA drive objects (no automatic OFF1, OFF2 or OFF3 is executed) and the acknowledgement as IMMEDIATELY.
The same on every family
Every manual that describes A50003 gives it the same reaction, acknowledgement and message class.
| Drive family | Reaction | Acknowledge | Message class | Component | Manual |
|---|---|---|---|---|---|
| S120, S150 | NONE | NONE | Communication error to the higher-level control system (9) | None | SINAMICS S120, S150 List Manual · p. 3299 |
| G130, G150 | NONE | NONE | Communication error to the higher-level control system (9) | None | SINAMICS G130, G150 List Manual · p. 1936 |
The drives this code lives on
A50003 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 alarm A50003 mean?
It is the COMM BOARD: Alarm 3 message from the CBE20 SINAMICS Link: a specific telegram word (receive) is being used twice. Info 1 gives the sender address and Info 2 the affected receive telegram word.
How do I fix A50003 on a SINAMICS drive?
Correct the CBE20 SINAMICS Link parameter assignment so that the receive telegram word reported in the alarm is used only once. p8870 and p8872 show the SINAMICS Link PZD receive words and receive addresses to check.
How is the A50003 alarm value decoded?
The value sits in r2124 and is interpreted hexadecimal as yyyyxxxx hex: yyyy is Info 1, the address of the sender, and xxxx is Info 2, the receive telegram word — both read in decimal.
Does A50003 switch the drive off?
No. As an alarm it triggers no automatic reaction, and as a fault the entries print the reaction NONE for the Infeed, Servo, Vector and HLA drive objects with immediate acknowledgement.
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 A50xxx group · SINAMICS manuals · Siemens manuals