Axis %1 Encoder %2 Warning %3; Axis %1 Actual Velocity Alarm Limit - Siemens Sinamics S120 Diagnostic Manual

NCK alarms
25022

Axis %1 encoder %2 warning %3

Parameters: %1 = Axis name, spindle number
%2 = Encoder number
%3 = Error fine coding
Definitions: This alarm only occurs with absolute encoders:
a. Warning notice of missing absolute encoder adjustment (on the SIMODRIVE 611D or with PROFIdrive drives), that
is if MD34210 $MA_ENC_REFP_STATE equals 0. In this case, fine error code 0 is returned.
b. If, on the SIMODRIVE 611D only, zero mark monitoring has been activated for the absolute encoder (see MD36310
$MA_ENC_ZERO_MONITORING): In this case, the absolute position of the absolute encoder could not be read with-
out error:
Breakdown of fine error codes:
(Bit 0 not used)
Bit 1 Parity error
Bit 2 Alarm bit of the encoder
Bit 3 CRC error
Bit 4 Timeout - start bit for EnDat transfer is missing
This alarm is only displayed, as the absolute position itself is not required at this time for control/contour.
A frequent occurrance of this alarm indicates that the absolute encoder transfer or the absolute encoder itself is faulty,
and that an incorrect absolute value could be determined in one of the next encoder selection or power on situations.
Reaction: Alarm display.
Remedy: a. Verify encoder adjustment (machine reference ) or readjust encoder.
b. Replace the encoder, replace or screen the encoder cable (or deactivate zero mark monitoring).
Program Clear alarm with the Delete key or NC START.
Continuation:
25030

Axis %1 actual velocity alarm limit

Parameters: %1 = Axis name, spindle number
Definitions: If the axis has at least one active encoder, then the actual speed of the axis is cyclically checked in the IPO cycle. If
there are no errors, the actual velocity can never become greater than specified in the axis-specific MD36200
$MA_AX_VELO_LIMIT (threshold for velocity monitoring). This threshold value in [mm/min, rev/min] is input by an
amount that is about 5 to 10% greater than that which can occur at maximum traversing velocity. Drive errors can result
in the velocity being exceeded and the alarm is then triggered.
The alarm can be reprogrammed in the MD11412 $MN_ALARM_REACTION_CHAN_NOREADY (channel not ready).
Reaction: Mode group not ready.
The NC switches to follow-up mode.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Channel not ready.
Remedy: Please inform the authorized personnel/service department.
- Check the speed setpoint cable (bus cable).
- Check the actual values and direction of position control.
- Change the position control direction if the axis rotates uncontrollably -> axis-specific MD32110
$MA_ENC_FEEDBACK_POL [n] = < -1, 0, 1 >.
- Increase the monitoring limit value in MD 36200 $MA_AX_VELO_LIMIT.
Program Teileprogramm neu starten.Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Continuation:
348
Diagnostics Manual, 07/2010, 6FC5398-8BP40-0BA0
Alarms