Siemens SINUMERIK 840D sl Function Manual page 318

Data Description
8.3 Interface signals
SGE de-select ext. STOP E
This SGE can be used to request a stop via the function "extended stopping and
retraction" (ESR). When an external STOP E is initiated the timer set using MD
36954: $MA_SAFE_STOP_SWITCH_TIME_E / p9554: "SI motion transition time
STOP E to SBH" is started.
After this time has elapsed, the system automatically changes over to SBH.
If a stop request is active, SGA "STOP E is active" is set in the same way as it
would be for an internally triggered STOP E.
0 signal:
1 signal:
Note
Stopping with an ext. STOP A (pulse cancellation), ext. STOP C (braking at the
current limit) and ext. STOP D (braking along a path) have a higher priority and
can interrupt an ext. STOP E.
STOP E only produces a different response than STOP D if the user has config-
ured the ESR function – extended stop and retract – and initiation of the ESR is
programmed depending on $VA_STOPSI or $A_STOPESI. If no ESR is active, the
STOP E behaves like a STOP D. However, if the ESR was incorrectly configured,
there is a delay up to the time $MC_ESR_DELAY_TIME1 and
$MC_ESR_DELAY_TIME2 compared to STOP D until the braking operation is initi-
ated.
After these times have expired, braking is initiated at the current limit.
Close SGE brake (only the drive)
Using this SGE, a mechanical brake, that is controlled from the drive brake control,
is closed. It is used to check brake closing while testing the mechanical brake sys-
tem.
S If this SGE is set, the brake is closed.
S If this SGE is set, then the brake assumes the status of the drive brake control
– i.e. it is not forcibly opened (no positive opening).
Note
This SGE must be connected to the brake control using a BiCo interconnection in
the drive (p0858 to source r9719, bit 13). This connection is parameterized as
standard.
8-318
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
"Stop/retraction" is requested
"Stop/retraction" is not requested
© Siemens AG, 2006. All rights reserved
03.06