Siemens SINUMERIK 802D sl Instrukcja Operatora Pobierz pdf (Strona 179)

NCK alarms

06/2009 Overview of alarms

2-179

SINUMERIK 802D sl, Diagnostics Manual, 06/2009

2. With closed position control loop (without jamming) - NC/PLC interface signal V380x 0002.1 (Servo

enable) is "1" - the axis is pushed away from its position by mechanical forces with a small gain in the

position control loop.

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 MD36040 $MA_STANDSTILL_DELAY_TIME and MD36030

$MA_STANDSTILL_POS_TOL; increase if necessary. The value must be greater than the machine

data "Exact stop - coarse" (MD36000 $MA_STOP_LIMIT_COARSE).

- Estimate machining forces and reduce if necessary by setting a lower feed or a higher rotational

speed.

- Increase clamping pressure.

- Increase the gain in the position control loop by improved optimization (Kv factor MD32200

$MA_POSCTRL_GAIN, SIMODRIVE611D drive).

Program Con-

tinuation:

Clear alarm with the RESET key in all channels of this mode group. Restart part program.

25050 Axis %1 contour monitoring

Parameters: %1 = Axis name, spindle number

Definitions: The NCK calculates for each interpolation point (setpoint) of an axis the actual value that should result

based on an internal model. If this calculated actual value and the true machine actual value differ by

a larger amount than given in the MD36400 $MA_CONTOUR_TOL, then the program is aborted and

the alarm message is issued.

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 whether the tolerance value set in MD36400 $MA_CONTOUR_TOL is too small.

- Check optimization of the position controller (Kv factor in the MD32200 $MA_POSCTRL_GAIN) to

establish whether the axis follows the given setpoint without overshooting. Otherwise, the speed con-

troller optimization must be improved or the Kv servo gain factor must be reduced.

- Improvement of speed controller optimization

- Check the mechanics (smooth running, inertial masses).

Program Con-

tinuation:

Clear alarm with the RESET key in all channels of this mode group. Restart part program.

25060 Axis %1 speed setpoint limitation

Parameters: %1 = Axis name, spindle number

Definitions: The speed setpoint has exceeded its upper limit for a longer period than allowed.

The maximum speed setpoint is limited to a certain percentage by the axis-specific MD36210

$MA_CTRLOUT_LIMIT. The input value of 100% corresponds to the rated speed of the motor and

hence the rapid traverse velocity.

For SINAMICS: Drive parameter p1082 also has a limiting effect.

If the values are exceeded for a short time, then this is tolerated provided they do not last longer than

allowed for in the axis-specific MD36220 $MA_CTRLOUT_LIMIT_TIME. The setpoint is limited during

this time to the maximum value that has been set in (MD36210 $MA_CTRLOUT_LIMIT).

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