01/2007
18.3 Travel to fixed stop with high–resolution torque reduction
18-516
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
18.3.2 Comparison
To simplify the torque reduction commissioning, the SINUMERIK 840Di sl NC
tries to perform, as standard, an automatic adjustment using the torque reduc-
tion evaluation configured in the drive. To do this the NCK reads the relevant
drive parameters and applies the value converted to NCK format in the machine
data:
S MD37620: $MA_PROFIBUS_TORQUE_RED_RESOL
The following requirements must be met:
S The drive supports acyclic PROFIBUS communication.
S The drive has a parameter to standardize torque reduction.
S In the NCK, acyclic communication with the drive is enabled with:
– MD13070: $MN_DRIVE_FUNCTION_MASK[n], Bit 15 == 1
If the requirements for automatic adjustment of the NCK and drive are not met,
the adjustment must be performed manually in the drive and NCK.
18.3.3 Parameterization: SINAMICS S120
The drive must be operated with one of the following message frames:
S Message frame 102, 103, 105, 106 ,116
The evaluation of torque reduction is set using the parameter:
S p1544 Torque reduction evaluation [%]
Normalization: 1% 16384
D
= 4000
H
18.3.4 Parameterization: SIMODRIVE
The following SIMODRIVE drives support high–resolution torque reduction:
S SIMODRIVE 611 universal, universal E
S SIMODRIVE POSMO SI, CD, CA
The drive must be operated with one of the following message frames:
S Message frame 102 to 107
The evaluation of torque reduction is set using the parameter:
S P0881 Torque reduction evaluation [%]
Normalization: 1% 16384
D
= 4000
H
Automatic
adjustment
Manual
comparison
Message frame
Drive parameters
Message frame
Drive parameters
18 840Di–s
ecific Data and Functions
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