Siemens SINUMERIK 840D

11.03 3 Safety-Related Functions
3.5 Safely-reduced speed (SG)
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
3-109
Table 3-37 Assignment between active gear stage/gear ratio selection
Selection and checkback of
active gear stage
Assignment between ratio
selection for NCK and
PLC/drive
Spindle
motor/
load
SGE gear ratio selection
Gear
stage
E1 E2 A1 A2 Bit 2 Bit 1 Bit 0
1 0 0 0 0 0 0 0 4 : 1
2 0 1 0 1 0 0 1 2,5 : 1
3 1 0 1 0 0 1 0 1,6 : 1
4 1 1 1 1 0 1 1 1 : 1
• Input assignment of gear ratio selection
Table 3-38 Supplying the machine data for the SGEs for 840D
Signal Assignment
SGE/SGA Name MD No. Value
SGE Gear ratio selection, bit 0 36974[0] 01 05 03 01
SGE Gear ratio selection, bit 1 36974[1] 01 05 03 02
Table 3-39 Entering gear ratios into machine data
Setting 840D 611 digital
MD No. Value MD No. Value
Denominator 1
36921[0]
10 1321.0 10
of 2
36921[1]
10 1321.1 10
gearbox 3
36921[2]
10 1321.2 10
encoder/load 4
36921[3]
10 1321.3 10
Numerator 1
36922[0]
40 1322.0 40
of 2
36922[1]
25 1322.1 25
gearbox 3
36922[2]
16 1322.2 16
encoder/load 4
36922[3]
10 1322.3 10