Siemens SINUMERIK 840D sl Function Manual page 272

Data Description
8.1 Machine data for SINUMERIK 840D sl
36977
MD number
Default value: 0
Change becomes effective after: Power ON
Data type: DWORD
Significance:
Special cases, errors,...
corresponds with...
Additional references
36978
MD number
Default value: 0
Change becomes effective after: Power ON
Data type: DWORD
Significance:
Special cases, errors,...
corresponds with...
Additional references
8-272
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
$MA_SAFE_EXT_STOP_INPUT[n]: 0 ... 3
Input assignment, external brake request
Min. input limit: –
Protection level: 7/2
This data defines the NCK inputs to select/de-select the external brake requests.
n = 0, 1, 2, 3 stands for various braking types
n = 0: Assignment for "de-select external STOP A" (SH, pulse cancellation)
n = 1: Assignment for "de-select external STOP C" (braking at the current limit)
n = 2: Assignment for "de-select external STOP D" (braking along a path)
n = 3: Assignment for "de-select external STOP E" (ESR, braking along a path)
If the MD bits 31 are set, then the signal is processed inverted (i = 8). The signal "de-select
external STOP A" can not be parameterized inverted. In the case of an error, a
parameterizing error is signaled
MD 36970: $MA_SAFE_SVSS_DISABLE_INPUT
$MA_SAFE_OVR_INPUT[n]: 0 ... 3
Input assignment for SG override
Min. input limit: –
Protection level: 7/2
Assigns the NCK inputs for the correction of the limit value of the safely-reduced speeds 2
and 4.
Structure: Refer to the coding of the input assignment
n = 3, 2, 1, 0 stand for correction selection bits 3, 2, 1, 0
Assigns the input bits to the SG correction values:
Bit 3 Bit 2 Bit 1
0 0 0
0 0 0
up to
1 1 1
The correction factor itself (percentage) is defined using the following machine data:
MD 36932: $MA_SAFE_VELO_OVR_FACTOR[n]
– The function "correction, safely-reduced speed" is enabled using MD 36901:
$MA_SAFE_FUNCTION_ENABLE, bit 5.
– If the MD bits 31 are set, then the signal is processed inverted (i = 8).
MD 36932: $MA_SAFE_VELO_OVR_FACTOR[n]
Refer to Subsection 6.5.4: "Override for safely-reduced speed", refer to MD 36970:
$MA_SAFE_SVSS_DISABLE_INPUT
Max. input limit: –
Max. input limit: –
Bit 0
0 Correction 0 is selected
1 Correction 1 is selected
1 Correction 15 is selected
© Siemens AG, 2006. All rights reserved
03.06
Units: –
Units: –