A06301 — Infeed: Line supply overvoltage

A06301 (Infeed: Line supply overvoltage) is reported by the infeed when the filtered (steady-state) value of the rms line supply voltage Vrms rises above the overvoltage alarm threshold. The threshold is not an absolute voltage: the drive compares Vrms with the factor p0281 multiplied by the set line supply voltage p0210 — Vrms > p0281 * p0210. The message value carries the line supply voltage, and the drive also stores the actual steady-state value in r2124 as a floating-point alarm value. Depending on the drive configuration, the same condition can also be output as a fault (F06301).

• The filtered (steady-state) value of the rms line supply voltage Vrms is higher than the alarm threshold: Vrms > p0281 * p0210.
• Because the threshold is calculated from p0210 and p0281 rather than set as a fixed voltage, a mismatch between these settings and the actual supply triggers the same message.

1. Check the line supply.
2. Check the line supply voltage setting p0210 against the actual supply.
3. Check the alarm threshold p0281.
4. Read the actual steady-state line supply voltage in r2124 and compare it with the threshold p0281 * p0210.

• Message value: Line supply voltage: %1 — the message carries the line supply voltage.
• The actual steady-state line supply voltage is stored as the alarm value in r2124, as a floating-point number.

• p0210 (Drive unit line supply voltage / U_connect) — the line supply voltage the unit is configured for; the overvoltage threshold is derived from it, so verify it against the actual supply when A06301 appears.
• p0281 (Line supply overvoltage alarm threshold / U_l_over A thr) — the threshold factor; the alarm trips when the steady-state rms voltage exceeds p0281 * p0210, so check it if the supply itself is within its normal range.
• r2124 (Alarm value) — read the actual steady-state line supply voltage here; the drive stores it as a floating-point number.

As an alarm, A06301 needs no acknowledgment: it goes away by itself once the filtered rms line supply voltage falls back below the threshold. If the drive is configured to output the same condition as fault F06301, the drive does not trip automatically and the fault can be acknowledged immediately (the manual also names acknowledgment after POWER ON for the fault case).