Siemens G130 - F31501 (N, A) Encoder 1: Position tracking encoder position outside tolerance window; F31502 (N, A) Encoder 1: Encoder with measuring gear without valid signals

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4 Faults and alarms

4.2 List of faults and alarms

SINAMICS G130/G150

1744 List Manual (LH2), 07/2016, A5E03263479A

Reaction upon N: NONE

Acknowl. upon N: NONE

Reaction upon A: NONE

Acknowl. upon A: NONE

F31501 (N, A) Encoder 1: Position tracking encoder position outside tolerance window

Message value: %1

Message class: Actual position/speed value incorrect or not available (11)

Drive object: B_INF, ENC, VECTOR_G

Component: None Propagation: GLOBAL

Reaction: Vector: OFF1 (NONE, OFF2, OFF3)

Infeed: OFF1 (NONE, OFF2)

Acknowledge: IMMEDIATELY

Cause: When switched off, the drive/encoder was moved through a distance greater than was parameterized in the tolerance

window. It is possible that there is no longer any reference between the mechanical system and encoder.

Fault value (r0949, interpret decimal):

Deviation (difference) to the last encoder position in increments of the absolute value.

The sign designates the traversing direction.

Note:

The deviation (difference) found is also displayed in r0477.

See also: p0413 (Measuring gear position tracking tolerance window), r0477 (Measuring gear position difference)

Remedy: Reset the position tracking as follows:

- select encoder commissioning (p0010 = 4).

- reset the position tracking as follows (p0411.2 = 1).

- deselect encoder commissioning (p0010 = 0).

The fault should then be acknowledged and, if necessary, the absolute encoder adjusted (p2507).

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