Siemens SINUMERIK 840D sl, Function Manual

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Detailed description
2.4 Emergency stop acknowledgement
Basic logic functions: Emergency Stop (N2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
11
2.4 Emergency stop acknowledgement
EN 418 standard
The emergency stop control element may only be reset as a result of manual manipulation of
the emergency stop control element. Resetting of the emergency stop control element alone
must not trigger a restart command.
A machine restart must be impossible until all of the actuated emergency stop control
elements have been deliberately reset by hand.
Emergency stop acknowledgement
1. Interface signal:
DB10, DBX56.2 = 1 (Acknowledge emergency stop)
2. Interface signal:
DB11, ... DBX0.7 = 1 (mode group reset)
Note
The two interface signals DB10, DBX56.2 (Acknowledge emergency stop) and DB21, ...
DBX7.7 (Reset) must both remain set at least until the interface signal is reset:
DB10, DBX106.1 (Emergency stop active).
The emergency stop state cannot be reset, only using the interface signal:
DB21, ... DBX7.7 (Reset).
1
2
3
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'%'%;(PHUJHQF\VWRSDFWLYH
'%'%;$FNQRZOHGJHHPHUJHQF\VWRS
'%'%;(PHUJHQF\VWRS
Figure 2-1 Resetting the emergency stop state
(1) DB10, DBX56.2 (acknowledge emergency stop) is inoperative
(2) DB21, ... DBX7.7 (Reset) is inoperative
(3) DB10, DBX56.2 and DB21, ... DBX7.7 reset DB10, DBX106.1(Emergency stop active)