Description Of Stop E - Siemens SINUMERIK 840D sl Function Manual

03.06
SGE de-select external STOP D
If a stop request is active, SGA "STOP D is active" is set in the same way as it
would be for an internally initiated STOP D.
The MD 36977: $MA_SAFE_EXT_STOP_INPUT[2] is used to define the selection/
de-selection of the external braking request, in this case "de-select external
STOP D" (path braking).
6.3.6

Description of STOP E

Action in the drive monitoring channel:
The drive monitoring channel requests an extended stop and retract (ESR), con-
trolled from the NC. At the same time, timer in parameter p9554: "SI motion transi-
tion time from STOP E to SBH" is started. The SBH function is automatically acti-
vated after the timer expires.
Action in the NCK monitoring channel:
An ESR is requested by the control monitoring channel. At the same time, timer in
MD 36954: $MA_SAFE_STOP_SWITCH_TIME_E is started. The SBH function is
automatically activated after the timer expires.
S Effect:
The extended stop and retract that have been configured are started.
S Alarm message:
The alarm message "STOP E initiated" is displayed.
S Acknowledgment:
For STOP E, an unintentional restart is prevented. The error can be acknowl-
edged using the NC-RESET key.
SGA STOP E is active
This signal indicates that STOP E is active.
0 signal:
1 signal:
The NC-controlled ESR is initiated by writing to the system variable
$AC_ESR_TRIGGER=1 (also see /FB3/, M3 "Axis coupling and ESR"). To obtain
the criteria for initiating, the following SI system variables are used:
$VA_STOPSI:
Axial system variable that contains the present stop.
For a value of 4, a Stop E is active for this axis.
$A_STOPESI:
Global system variable that displays a value not equal to 0 to indicate that a Stop E
is active on one of the axes. This variable saves the user having to search through
all of the axes.
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
Safety Functions Integrated in the System/Drive
STOP E is not active.
STOP E is active.
6.3 Safe stops A-F
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