F06503 — Infeed: Line black start unsuccessful

F06503 reports that the line black start of the infeed was unsuccessful. The message value of the fault contains the state the black start had reached; this state corresponds to r5482, the line synchronization status. The fault value in r0949 tells which of the two possible situations occurred: either a line supply was already identified when the black start began (fault value 109), or the black start did not finish within the maximum time p5581[2]. In the default setting the drive is stopped (OFF1) when this fault occurs.

• The line black start the infeed attempted did not succeed.
• With fault value 109 in r0949: at the start of the black start (p5581 = 1), a line supply was identified — the frequency and voltage were within the limits specified in p0281 to p0285.
• With every other fault value: the maximum time for a black start (p5581[2]) was exceeded.

1. Read the fault value in r0949 to determine which situation applies: 109 — a line supply was identified at the start of the black start; any other value — the maximum time p5581[2] was exceeded. The message value shows the corresponding black-start state, which corresponds to r5482.
2. Check the conditions of a line black start.
3. Check the parameterization of the line black start; the manual points to p5581 (Island grid times), the parameter that holds the black-start times including the maximum time p5581[2].

• The drive enters the state of the black start into the message value; the state corresponds to r5482 (CO: Line synchronization status).
• 109 — at the start of the black start (p5581 = 1) a line supply was identified: frequency and voltage were within the specified limits p0281 to p0285.
• Any other value — the maximum time for a black start (p5581[2]) was exceeded.

• r5482 (CO: Line synchronization status) — the message value of F06503 corresponds to this status; read it to see the line synchronization state at the moment of the fault.
• r0949 (Fault value) — holds the fault value that separates the two causes of this code: 109 versus any other value.
• p5581 (Island grid times) — the parameterization of the line black start: the start of a black start corresponds to p5581 = 1, and p5581[2] sets the maximum time a black start may take.
• p0281 (Line supply overvoltage alarm threshold) — with p0285 it spans the limits p0281 to p0285 within which frequency and voltage must lie for a line supply to be identified at the start of a black start.
• p0285 (Line supply frequency undershot alarm threshold) — the frequency limit that completes the p0281 to p0285 window used to identify a line supply at the start of a black start.