Siemens SINUMERIK 840D sl Function Manual page 50

Safety Functions Integrated in the Drive
4.2 Safe standstill (SH)
S The status of the safe standstill function is displayed via the appropriate param-
eters.
Terminals for safe standstill
The safe standstill function is selected/deselected separately for each drive using a
specific terminal on the Control Unit and Motor Module.
S Control Unit
The required input terminal for safe standstill (SH) is selected via the BICO in-
terconnection (BI: p9620).
Digital input DI 0 ... DI 7 on the Control Unit can be used as a signal source
(NCU). NX modules have DI 0 to DI 3.
S Motor Modules
The input terminal for "safe standstill (SH)" is terminal "EP" ("enable pulses").
Both terminals must be simultaneously energized, otherwise a fault will be issued.
NCU X122.4
DI x
r0722.x
M
Monitoring channel
Control Unit
Monitoring channel
Motor Modules
Fig. 4-1 Terminals for "safe standstill"
Grouping drives
If the function is to be simultaneously initiated for several drives, the terminals for
the corresponding drives must be grouped together:
S Control Unit
By appropriately interconnecting the binector input to a joint input terminal for
the drives to be combined to form a group.
4-50
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
NCU 7x0
DRIVE–CLiQ
BI:
p9620
X21/X22
1
2
3
4
Motor Modules
DRIVE–CLiQ
DRIVE–CLiQ
U2
V2
Temp+
W2
Temp –
BR+
EP +24 V
BR–
EP M
© Siemens AG, 2006. All rights reserved
03.06
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