Safety Integrated - Industry - Siemens

Please consider the following notes on using the FB
"F_FDBACK":
Note
Before inserting the F application block F_FDBACK you
have to copy the F application block F_TOF from the
block container F-Application Blocks\Blocks of the F library
Distributed Safety (V1) into the block container of
your S7 program, if it is not available in this container
(has already been done in this example project).
Warning!
When using the F application block F_FDBACK it is required
that the F application block F_TOF has the
number FB 186 and that the number is not changed!
Network 2
This network is assigned to group 2 with motor M2.
The structure of the program is identical to network 1. The
statements on network 1 thus also apply to network 2.
Network 3
FC „REINTEGRATION“ (FC 2)
Network 3 of FB 1 calls FC 2 where the reintegration is implemented
in case of a passivation of F-DI or F-DO. For R-DO, a RE-
INT memory bit has been prepared, which reintegrates the
module with a positive edge.
Warning!
In this example, the reintegration of passivated
modules occurs automatically. Use the automatic
reintegration for your application only if it will not
cause any hazards.
A passivation is indicated via LED "SF" lighting up on the module.
The reintegration of an F module may take approx. one
minute.
Operating instructions
Prerequisite:
■ Hardware configuration and safety program are in the
S7-CPU
■ All emergency stop buttons are unlocked
■ No passivation of the F-DI/F-DO
The tables below demonstrate the function principle:
No. Instruction Result/Note
1 Press the acknowledgement
push button E 9.0 (NO) and
release it.
2 Press the push button E 6.0
(NO) and release it.
3 Press the push button E 7.1
(NO) and release it.
4 Press the emergency stop
push button E0.0.
5 Press the push button E 0.1
and release it.
6 Unlock the emergency stop
button and repeat no 1 to 3.
7 Press the emergency stop
push button E 0.2
Acknowledgement (here with
the acknowledgement signal
ACK_ALL applying to all groups)
is required prior to the first start
and after activating the emergency
stop. Transmitting the acknowledgement
signal for
individual groups is also possible
(push buttons E 6.1 or E 8.0).
If all conditions for a start of
group 1 are met, the contactors
K1 and K2 switch motor M1.
If all conditions for a start of
group 2 are met, the contactors
K3 and K4 switch motor M2.
The contactors K1 and K2 drop
out, due to this motor M1 of
group 1 is shut down.
Contactors K3 and K4 drop out,
due to this motor M2 of group 2
is shut down.
Motors M1 and M2 start.
K1 to K4 drop out and shut
down groups 1 and 2 (with their
motors M1 and M2).
Note
An acknowledgement is required after an actuated
emergency stop or prior to the first start.
Functional Example No. AS-FE-I-009-V10-EN 291
Ex. No.
9