A07594 — Encoder 2: Value range for position actual value exceeded

A07594 reports that the position actual value of encoder 2 no longer fits into the number range reserved for its representation: -2147483648 ... 2147483647. When the overflow occurs, the referenced or absolute encoder adjusted status is reset. Depending on the drive's configuration, the same condition can also be issued as a fault (F) or with no reaction (N) instead of this alarm.

• The value range -2147483648 ... 2147483647 provided for the position actual value representation was exceeded. The overflow resets the referenced or absolute encoder adjusted status.
• Which quantity overflowed is identified by the alarm value in r2124 (see below): the position actual value r2521, the encoder position actual value r0483 or the load gear absolute value r2723 — or the maximum encoder value multiplied by the factor that converts the absolute position from increments into length units (LU).

1. Read the alarm value in r2124 (interpret decimal) to determine which quantity exceeded the value range.
2. If required, reduce the traversing range or the position resolution.
3. For alarm value 3, reduce the position resolution and the conversion factor: reduce the length unit (LU) per load revolution for rotary encoders (p2506) and increase the fine resolution of absolute position actual values (p0419).

The drive stores the alarm value in r2124; interpret it as a decimal number:

• 1 — the position actual value (r2521) has exceeded the value range.
• 2 — the encoder position actual value (r0483) or the absolute value after the load gear (r2723) has exceeded the value range.
• 3 — the maximum encoder value times the factor to convert the absolute position (r0483 and/or r2723) from increments to length units (LU) has exceeded the value range for displaying the position actual value.

• r2124 — alarm value: read it (decimal) to see which of the three overflow conditions raised A07594.
• r2521 — CO: LR position actual value; alarm value 1 means this value left the permitted range.
• r0483 — CO: encoder actual position value; named by alarm values 2 and 3.
• r2723 — CO: load gear absolute value; named by alarm values 2 and 3.
• p2506 — LR length unit (LU) per load path; for alarm value 3, reduce it (LU per load revolution for rotary encoders).
• p0419 — fine resolution of absolute position actual values (in bits); for alarm value 3, increase it.

As this alarm, the message triggers no automatic drive reaction and needs no acknowledgment. If the drive's configuration outputs the same condition as a fault, the drive reacts with OFF1 (OFF2, OFF3) and the fault must be acknowledged IMMEDIATELY before the drive can be restarted. Note that the overflow reset the referenced or absolute encoder adjusted status.