Siemens SINUMERIK 840D Description Of Functions page 414

7 Configuring example
7.4 Safety Integrated without SPL
Fig. 7-22
7.4.2 EMERGENCY STOP and connecting-up the I/R module
For an EMERGENCY STOP, all the drives in the drive group are stopped via
terminal 64 (controller inhibit) on the infeed/regenerative feedback module.
The drives brake with the maximum current (this can be configured).
After a certain delay (if, for example, the spindle has also braked and is
stationary), the internal line contactor in the NE module that is used to
electrically isolate it from the power supply, is opened via terminal 48
(DIN EN 60204-1). The connection between terminals NS1, NS2 is opened as
an additional safety measure to prevent the line contactor from re-closing.
The infeed/regenerative feedback module is supplied from the line supply using
a three-conductor cable.
The line contactor integrated in the infeed/regenerative feedback module is
used to isolate the drives from the line supply (an external line contactor is not
required).
7-414
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
SIMODRIVE 611D
Double axis module
Axis X, axis Z
663 AS2 AS1
+24V
NCK SGAs
Q3
Q4
Circuit example
SIMODRIVE 611D
Single axis module
Spindle C
663 AS2 AS1 9
9
© Siemens AG 2003 All Rights Reserved
11.03
NCK SGEs
I7
I8
BEI2_01.DSF