Siemens SINUMERIK 840D sl Function Manual page 145

03.06
Table 6-14
Switchover
From lower to higher
From higher to lower
Note: See Subsection 6.5.2, "Selecting/de-selecting safely reduced speed"
Note
Changing between SGEs "SG override selection, bits 3, 2, 1, 0" continuously and quickly
may initiate a STOP F.
Selecting an SG override
The active speed limit value (SG1, 2, 3 or 4) is selected using SGEs "SG selection
bits 1 and 0". The desired override is selected by combining SGEs "SG override
selection bits 3, 2, 1 and 0". The override is only effective for the speed limit value
for SG2 and SG4.
Table 6-15 Selecting the SG override for safely-reduced speed
SG SG SG
Selecti Selecti override
on on Selection
Bit 1 Bit0 Bit 3
= 0 = 0 x
= 0 = 1 = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 1
– " – = 1
– " – = 1
– " – = 1
– " – = 1
© 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
Changing-over SG override stages
Description
Instantaneous
The time parameterized using MD 36951/p 9551 is started. The
axis/spindle must be braked within this delay time.
SGE
SG SG
override override
Selection Selection
Bit 2 Bit 1
x x
= 0 = 0
= 0 = 0
= 0 = 1
= 0 = 1
= 1 = 0
= 1 = 0
= 1 = 1
= 1 = 1
= 0 = 0
= 0 = 0
= 0 = 1
= 0 = 1
= 1 = 0
6.5 Safely-reduced speed (SG)
SG Meaning
override
Selection
Bit 0
x Speed limit value for SG1
active
= 0 Speed limit value for SG2
active with override stage 0
= 1 ... with override stage 1
= 0 ... with override stage 2
= 1 ... with override stage 3
= 0 ... with override stage 4
= 1 ... with override stage 5
= 0 ... with override stage 6
= 1 ... with override stage 7
= 0 ... with override stage 8
= 1 ... with override stage 9
= 0 ... with override stage 10
= 1 ... with override stage 11
= 0 ... with override stage 12
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