Siemens SINUMERIK 840D Description Of Functions page 418

7 Configuring example
7.4 Safety Integrated without SPL
7.4.5 De-selecting SBH using the key-operated switch/SG changeover
using the door safety contactor
On the NCK side, "safe operating stop" is de-selected using DMP input 5. The
state shown in the circuit diagram is "protective door open" and "safe operating
stop" was selected using the key-operated switch. Using the key-operated
switch, it is possible to change-over to safely-reduced speed with the protective
door open.
X axis, Z axis, spindle C:
36971
Safe operating stop is de-selected when the protective door is closed and a
changeover is made from safely-reduced speed 1 (personnel protection) to
safely-reduced speed 2 (machine protection).
X axis, Z axis, spindle C:
36972
On the PLC side, the switching states of the door and the key-operated switch
are logically combined in an S7 program. The safety functions are activated
and de-activated via the PLC drive interface (see Chapter 4, "Interface
signals").
Circuit diagram
Fig. 7-27
7-418
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
SAFE_SAFE_SS_DISABLE_INPUT:
SAFE_SAFE_VELO_SELECT_INPUT[0]
+24V
Door locking
Safety contactor K3
13 23 33
or door switch
14 24 34
see Section 7.4.4
NCK
I5
I6
Circuit diagram: SBH de-selection using key-operated switch
: 01040105H
: 01040106H
Keyswitch
13 23
14 24
SCHALT02.DSF
SG changeover using the door safety contactor
© Siemens AG 2003 All Rights Reserved
11.03
PLC
I32.5
I32.6