3 Safety-Related Functions
3.4 Safe operating stop (SBH)
!
3.3.1
Overview of the machine data for the SH function
Overview of MD
Table 3-15
for 840D
Overview of MD
Table 3-16
for 611 digital
3.4 Safe operating stop (SBH)
The purpose of the SBH function is to safely monitor the standstill position of an
Description
axis/spindle operating in the closed-loop position or speed controlled mode.
When SBH is active (SGA "SBH active" = 1), operating personnel can, for
example, enter protected machine areas in the set-up mode without first having
to power-down the machine.
An incremental encoder is sufficient to implement the function. The axis/spindle
is monitored for a change in the actual position value...
The features of the SBH function are as follows:
Function features
•
•
•
Standstill tolerance
The standstill of the axis/spindle is monitored via a standstill tolerance window
that is parameterized using the following machine data:
For 840D
For 611 digital
3-86
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Important
After the machine has been powered-up, the "safe standstill" function must
always be tested with Safety Integrated for all axes/spindles by testing the
shutdown path.
Overview of machine data for 840D
Number
Name
36956
$MA_SAFE_PULSE_DISABLE_DELAY
36957
$MA_SAFE_PULSE_DIS_CHECK_TIME
36960
$MA_SAFE_STANDSTILL_VELO_TOL
36976
$MA_SAFE_PULSE_STATUS_INPUT
36986
$MA_SAFE_PULSE_ENABLE_OUTPUT
Note:
Data is described in Chapter 4, "Machine data for SINUMERIK 840D"
Overview of machine data for 611 digital
Number
Name
1356
$MD_SAFE_PULSE_DISABLE_DELAY
1357
$MD_SAFE_PULSE_DIS_CHECK_TIME
1360
$MD_SAFE_STANDSTILL_VELO_TOL
Note:
Data is described in Chapter 4, "Machine data for SIMODRIVE 611digital"
The axis remains in closed-loop control
Parameterizable standstill tolerance window
Stop response after SBH has responded is STOP B.
MD 36930:
MD 1330:
$MA_SAFE_STANDSTILL_TOL
$MD_SAFE_STANDSTILL_TOL
© Siemens AG 2003 All Rights Reserved
11.03