300749
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
Axis %1 drive %2 conversion factor between motor and load too large
%1 = NC axis number %2 = Drive number
The conversion factor from the motor system [increments] to the load system [pm/mdeg] is larger than 1 or the factor which converts the load system to the motor system is larger than 65535.
Conditions:
The condition for the factor load system to motor system is: pm_to_incr <= 65535 The condition for the factor motor system to load system is: incr_to_pm <= 1 with pm_to_incr = 1 / incr_to_pm Formula for rotary axis:
The following applies for rotary motor encoder and rotary axis:
incr_to_pm(n) = (MD1321 SAFE_ ENC_ GEAR_ DENOM(n) / (MD1322 SAFE_ ENC_
NUMERA(n)) * incr_to_pm_rot_rotax
with n = 0 ... 7 (gear stage) and
incr_to_p m_rot_rotax = (360000 / 8192) * (1 / MD1318 SAFE_ENC_RESOL)
MD 1318 SAFE_ENC_RESOL (number of encoder lines per revolution)
MD 1321 SAFE_ENC_GEAR_DENOM[n] (encoder/load gear denominator)
MD 1322 SAFE_ENC_GEAR_NUMERA[n] (encoder/load gear numerator)
Formula for linear axis:
The following applies for rotary motor encoder and linear axis:
incr_to_pm(n) = (MD1321 SAFE_ ENC_ GEAR_ DENOM(n) / (MD1322 SAFE_ ENC_ NUMERA(n)) * incr_to_pm_rot_lin
incr_to_pm_rot_lin = (1000 / 8192) * (1 / MD1318 SAFE_ENC_RESOL) * MD1320
SAFE_ENC_GEAR_P ITCH
Explanations:
MD 1318 SAFE_ENC_RESOL (number of encoder lines per revolution)
MD 1320 SAFE_ENC_GEAR_PITCH (spindle pitch)
MD 1321 SAFE_ENC_GEAR_DENOM[n] (encoder/load gear denominator)
MD 1322 SAFE_ENC_GEAR_NUMERA[n] (encoder/load gear numerator) n = 0 ... 7 (gear stage)
Request: During boot-up of the control.
- Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Please inform the authorized personnel/service department. Check the following safetyrelevant MDs depending on the motor encoder type and axis type and correct, if necessary.
MD 1317 SAFE_ENC_GRID_POINT_DIST Grid division linear scale (for linear encoder) MD 1318 SAFE_ENC_RESOL Encoder marks per revolution (for rotary encoder)
MD 1318 SAFE_ENC_RESOL
MD 1320 SAFE_ENC_GEAR_PITCH (for rotary encoder and linear axis)
MD 1321 SAFE_ENC_GEAR_DENOM
MD 1322 SAFE_ENC_GEAR_NUMERA (when using a gear)
The motor encoder type and the axis type are determined via MD 1302: $MD_SAFE_IS_ROT_AX.
Switch control OFF - ON.
1-2628
© Siemens AG 2005 All Rights Reserved