Siemens SIMOCODE 3UF Programming And Operating Manual page 100

Standard Functions
12.7 Safety Oriented Tripping
DM-F Local
Cascade input automatic start /
monitored start
With / without start-up testing
With automatic starting / without
automatic starting after power
failure
DM-F PROFIsafe
The "DM-F PROFIsafe safe tripping" function block consists of 3 sockets:
● Event - PROFIsafe active: Failsafe communication between the F-CPU and the DM-F
PROFIsafe is active.
● Event - Safe tripping: A safety-oriented tripping has been carried out.
● Status - Enabling circuit closed: The enabling circuit is closed.
The following schematic shows the "Safe tripping" function block, DM-F PROFIsafe:
100
Description
• Automatic start:
The enabling circuits are switched to the operative
position, as soon as the starting condition on
cascade input 1 has been fulfilled, i.e. as soon as a
static +24 V DC signal is present (e.g. from T3).
• Monitored start:
The enabling circuits are switched to the operative
position, as soon as the starting condition on
cascade input 1 has been fulfilled, i.e. as soon as a
static +24 V DC signal is present (e.g. from T3)
and the start button on terminal Y33 has
subsequently been actuated (start with the falling
edge).
After a voltage failure, start-up testing requires that
the sensors at Y12 and Y22 be actuated once by the
system operator.
The DM-F Local can be parameterized, so that the
enabling circuits automatically switch to the operative
position after a power failure i.e. without pressing the
start button Y33.
Prerequisites:
• Y12, Y22 or cascade input 1 are parameterized for
"monitored start".
• The starting condition on the sensor inputs and on
the cascade input has been fulfilled.
• Valid actuation of the start button prior to the
power failure i.e. the enabling circuits were in the
operative position.
Programming and Operating Manual, 05/2020, A5E44499659002A/RS-AA/001
SIMOCODE PRO V PN FDI