Siemens Sinumerik 840C Diagnostics Manual page 30

1 Alarms
1.5.1 Alarm description
100* Leadscr. err. comp.-illegal grid spacg.
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Scan
After POWER ON
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Effect
Interlocking of NC START
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Interlocking of Mode Group Ready
Explanation
Leadscrew error compensation with rotary axes in NC machine data "Distance between 2 values" has been
entered for the appropriate axis with a value which cannot be divided into 360 degrees to give an integer, i.e. grid
spacing is not equal; e.g.
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Correct:
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Results in:
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Incorrect:
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Would give:
The compensation value chosen is too large compared with the distance between two leadscrew error compensa-
tion points (valid for rotary and linear axes).
Remedy
Modify NC machine data "Distance between 2 values" – check NC MD 324* and 328*.
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The compensation value in NC MD 328* must be less than NC MD 324*.
104* Speed setpoint value warning limit responded
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Scan
Cyclic
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Effect
Interlocking of NC START
Explanation
For analog measuring circuit:
The DAC set value entered is higher than in NC machine data 268* "Maximum setpoint speed (DAC)". It is not
possible to increase the set value further.
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Remedy
Traverse more slowly
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Check actual values (encoder)
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Check NC machine data "Maximum setpoint speed (DAC)"
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Check the drive actuator
112* Zero-speed control
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Scan
When accelerating
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When stopped
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When clamping
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When decelerating (delay)
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Effect
Interlocking of NC START
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Interlocking of Mode group READY
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Setpoint 0
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The control enable is removed after the time stored in NC machine data "Control enable cutout delay" has
elapsed
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Follow-up operation
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Explanation
The following error could not be cleared faster than the time entered in NC machine data "Control enable
cutout delay" during positioning
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On clamping, the limit defined in NC machine data "Zero speed monitoring" was exceeded
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A mechanically clamped axis has been pushed out of position
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Fault in the control device (actuator), at the tacho, at the motor, in the CNC measuring circuit hardware or
at/on the pulse encoder
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Incorrect specification on assigning the set value output
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At start-up: wrong position control direction
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Remedy
NC machine data "Zero speed monitoring" must be greater than "Coarse exact positioning limit"
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NC machine data "Control enable cutout delay" must be large enough for the following error to be removed
within this time (only applies if NC machine data "Zero speed monitoring delay" = 0)
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NC machine data "Zero speed monitoring delay" must be large enough for the following error of the individual
axis to be removed within the time entered
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Check actual values (encoder) and position control direction
1–22
NC–MD= 10 (rotary axis)
360/10 = 36 grid points
NC–MD= 11
360/11 = 32,7 grid points
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Siemens AG 2001 All rights reserved 6FC5198–jAB40
SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
POWER ON
Reset key
Reset key