Siemens SINUMERIK 840D sl Function Manual page 157

05.08
Table 6-14
Switch over
From lower to higher
From higher to lower
Note: See Chapter 6.5.2, "Selecting/deselecting 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
selec- selec- override
tion tion selection
Bit 1 Bit0 Bit 3
= 0 = 0 x
= 0 = 1 = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 0
– " – = 1
– " – = 1
– " – = 1
© Siemens AG 2008 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 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
6.5 Safely reduced speed (SG)
SG Description
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
6-157