F33500 — Encoder 3: Position tracking traversing range exceeded

F33500 reports that encoder 3 has exceeded the traversing range its position tracking can follow: a linear axis is configured without modulo correction, and the drive or encoder has moved beyond the maximum possible traversing range. The value the drive holds at that moment is read in p0412 and is interpreted as the number of motor revolutions. Depending on how the drive is configured, the same condition can also be issued as an alarm (A) or with no reaction (N); as a fault the drive executes OFF1, with OFF2, OFF3 or no reaction as the alternatives shown in the table.

• A linear axis is configured without modulo correction, and the drive or encoder has exceeded the maximum possible traversing range.
• With p0411.0 = 1, the maximum traversing range of the configured linear axis is defined to be 64x (+/- 32x) of p0421.
• With p0411.3 = 1, the maximum traversing range is preset to the highest possible value, which is +/- p0412/2 rounded off to complete revolutions; the highest possible value depends on the pulse number in p0408 and the fine resolution in p0419.

1. Select encoder commissioning by setting p0010 = 4.
2. Reset the position tracking by setting p0411.2 = 1.
3. Deselect encoder commissioning by setting p0010 = 0.
4. Acknowledge the fault and adjust the absolute encoder.

• p0010 (Drive commissioning parameter filter / Drv comm. par_filt): set to 4 to select encoder commissioning before the reset, and back to 0 to deselect it afterwards.
• p0411 (Measuring gear configuration / Meas gear config): set bit 2 to 1 to reset the position tracking; bits 0 and 3 select how the maximum traversing range is defined.
• p0412 (Measuring gear absolute encoder rotary revolutions virtual / Abs rot rev): read here how far the position tracking has run, counted in motor revolutions; with p0411.3 = 1 half of it also forms the traversing range.
• p0421 (Absolute encoder rotary multiturn resolution / Enc abs multiturn): with p0411.0 = 1 the traversing range is 64x (+/- 32x) of this multiturn resolution.
• p0408 (Rotary encoder pulse number / Rot enc pulse No.): together with p0419 it determines the highest possible traversing range.
• p0419 (Fine resolution absolute value Gx_XIST2 (in bits) / Enc fine Gx_XIST2): its fine resolution limits, together with p0408, the highest possible traversing range.

After p0010 = 4, p0411.2 = 1 and p0010 = 0 have been set in that order, the fault is acknowledged — the message allows immediate acknowledgement — and the absolute encoder is adjusted. If the drive is configured to output this condition as an alarm (A) or with no reaction (N), there is no reaction and no acknowledgement.