Signal Processing In The Drive Monitoring Channel - Siemens SINUMERIK 840D Description Of Functions

3 Safety-Related Functions
3.9 Safety-related input/output signals (SGE/SGA)
Fig. 3-31
Example Axes 1, 2 and 3 belong to one safety zone. For these axes, the message "axes
safely referenced" must be output at one NCK output (i.e. the message is
output if the message is active for all 3 axes).
The machine data must be parameterized as follows:
Axis 1: MD 36987: $MA_SAFE_REFP_STATUS_OUTPUT = output x
Axis 2: MD 36987: $MA_SAFE_REFP_STATUS_OUTPUT = output x
Axis 3: MD 36987: $MA_SAFE_REFP_STATUS_OUTPUT = output x
(output x = ss mm xx nn, refer to Chapter 4, "Machine data for SINUMERIK
840D")
3.9.2

Signal processing in the drive monitoring channel

General The safety-relevant input and output signals (SGEs and SGAs) are signals that
are sent to and received from the system via two channels:
Via the NCK monitoring channel
<--> NCK I/O devices <--> signal processing <-->
Via the drive monitoring channel
<--> PLC I/O devices <--> signal processing via PLC <-->
Digital PLC inputs/ Digital PLC inputs and outputs are implemented on the SINUMERIK 840D
using SIMATIC S7-300 I/O devices.
outputs for 840D
References: /S7H/, SIMATIC S7-300
3-134
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Multiple
NCK
HW assignment
O1
O2
Ox
...
&
...
...
...
...
On
Multiple assignment for NCK outputs
NCK SGE/SGA interface <-> NCK-CPU
NC/PLC interface <-->drive CPU
Note
The SGEs/SGAs must be supplied by the machine manufacturer in both the
drive monitoring channel and the NCK monitoring channel.
NCK
Monitoring
Inversion
SGE/SGA
comparators
interface
... ...
...
yes / no SGA
... ...
... ...
yes / no ...
SGA
... ...
...
...
SGA ...
yes / no
...
... ...
© Siemens AG 2003 All Rights Reserved
11.03
for axis 1
for axis 2
for axis 3
SGESGA06.DSF