What it means
A50004 is the alarm COMM BOARD: Alarm 4
. The drive raises it on the CBE20 SINAMICS Link when the telegram word (receive) and the address of the sender are inconsistent — both values have to be either equal to zero or not equal to zero — or when the address of the sender is greater than the maximum project address. Depending on how the drive is configured, the same condition can also be issued as a fault (F).
Why it appears
- CBE20 SINAMICS Link: the telegram word (receive) and the address of the sender are inconsistent — both values have to be either equal to zero or not equal to zero.
- CBE20 SINAMICS Link: the address of the sender is greater than the maximum project address.
What to check
- Read the alarm value in r2124 and interpret it hexadecimal (see below): it names the drive object number (Info 1) and the index (Info 2), taken from p8870 and p8872.
- For the CBE20 SINAMICS Link, correct the parameter assignment: make the telegram word (receive) and the address of the sender consistent — both equal to zero or both not equal to zero — and keep the address of the sender within the maximum project address.
Reading the message value
- The drive puts two items of information into the message value: Info 1 (%1) and Info 2 (%2).
- The alarm value is held in r2124 and must be interpreted hexadecimal: yyyyxxxx hex, where yyyy = Info 1 and xxxx = Info 2.
- Info 1 (decimal) is the drive object number from p8870, p8872.
- Info 2 (decimal) is the index from p8870, p8872.
Parameters the manual names
- r2124 — alarm value: read it here (interpret hexadecimal) to obtain Info 1 and Info 2 of this alarm.
- p8870 — SINAMICS Link PZD receive word: the drive object number and index reported in the alarm value are taken from p8870 and p8872; check the assignment here when correcting it.
- p8872 — SINAMICS Link PZD receive address: the sender address must be consistent with the receive word (both equal to zero or both not equal to zero) and must not be greater than the maximum project address.
- p8811 — SINAMICS Link project selection: named by the manual under 'See also' for this alarm.
Acknowledging and restarting
As an alarm, A50004 needs no acknowledgement. If the drive configuration issues the same condition as a fault, the reaction remains NONE (the drive does not execute OFF1, OFF2 or OFF3), and the fault is acknowledged IMMEDIATELY.
The same on every family
Every manual that describes A50004 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
A50004 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 A50004 mean on a SINAMICS drive?
It is COMM BOARD: Alarm 4, raised on the CBE20 SINAMICS Link when the telegram word (receive) and the address of the sender are inconsistent, or when the address of the sender is greater than the maximum project address.
How do I fix A50004?
Correct the parameter assignment of the CBE20 SINAMICS Link so that the telegram word (receive) and the address of the sender are either both equal to zero or both not equal to zero, and the sender address stays within the maximum project address.
Where can I read the info values of A50004?
In r2124, interpreted hexadecimal: yyyy is Info 1, the drive object number, and xxxx is Info 2, the index — both taken from p8870 and p8872.
Does A50004 stop the drive, and how is it reset?
No — the reaction is NONE. If the same condition is issued as a fault, the drive still does not execute OFF1, OFF2 or OFF3, and the fault is acknowledged IMMEDIATELY.
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