Siemens SINUMERIK MC Commissioning Manual page 261

Table 6-6
Setting
Gearbox stage switchover Enables/inhibits safety-relevant gearbox stage switchover.
Number of load revolutions Sets the denominator for the gearbox between the motor and load. The
Number of encoder revolu‐
tions
Direction reversal
Motor pole pair number
Table 6-7
Setting
Delay time actual value
sensing
Filter time actual value
sensing
Pulse enable
Actual value sensing sup‐
plies valid actual value
Actual speed value
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB
Gearbox stages switchover (Settings - mechanical configuration/actual value sensing)
Meaning
When enabled, you can parameterize up to 8 ratios, and switchover the
active gearbox stage via PROFIsafe.
active gearbox stage can be switched over via PROFIsafe.
Sets the denominator for the gearbox between the motor and load. The
active gearbox stage can be switched over via PROFIsafe.
For encoderless monitoring functions, the numerator of the gear ratio must
be multiplied by the number of pole pairs (see below).
Example:
Gearbox ratio 1:4, number of pole pairs = 2
Number of load revolutions = 1, number of encoder revolutions = 8 (4 x 2)
Activates/deactivates the direction of reversal for the gearbox.
Displays the number of motor pole pairs.
Actual value sensing (Settings – mechanical configuration/actual value sensing)
Meaning
Sets the delay time for evaluating the encoderless actual value sensing
after the pulses have been enabled.
The value should be greater than or equal to the magnetization time of the
motor (p0346).
The set time is internally rounded off to an integer multiple of the monitoring
clock cycle.
Caution: The safety functions are not fully effective until this time has
elapsed.
Notice: Reducing this value can have a negative impact on the actual value
acquisition and plausibility check - and result in safety message C01711
with message value 1041 or 1042.
Dependencies: C01711
Sets the filter time for the actual value smoothing for actual value acquis‐
ition without encoder.
Notice: A higher filter time results in a longer response time.
The smoothing is realized using a 1st order lowpass filter.
For a minimum value, the filter is deactivated.
The set time is internally rounded off to an integer multiple of the monitoring
clock cycle.
Display: Enable power
Display: Actual value sensing supplies valid actual value
Displays actual speed values for motion monitoring on the Control Unit.
Index [0] = load side actual speed value on the Control Unit
Commissioning and configuring
6.5 Configuring NC and drive-specific safety settings
261