Upvote:4
No, you cannot.
A 'national long-stay visa' is not a 'national Romanian short-term C visa'.
Also the visas are not relevant to determine if you (as a person) have exceeded the 90 days within a total period of 180 days limit, it is the passport entry/exit stamps that counts.
A visa only allows you to enter if all of the other entry conditions are fulfilled, among them: that you have not exceeded the 90 days limit.
Upvote:5
Simple answer: No.
The time limits for a stay (90 days in 180 days) apply to you as a person and is not something you can add up if you for some reason should have multiple credentials.
I would even doubt that you would be issued a Romanian short stay visa. You would have to apply for the Romanian short stay visa in Germany since that is your place of residence. The Romanian authorities would therefore be aware of your German residence permit and since the German residence permit gives you exactly the same rights to stay in Romania as a Romanian short stay visa, the issuance of the Romanian short stay visa would have no effect on your rights to stay there and I assume the consulate would refuse to process the application.
The sentence you are quoting applies to stays in Romania with a Romanian residence permit.