Siemens SIMOCODE 3UF Programming And Operating Manual page 104

Standard Functions
12.7 Safety Oriented Tripping
DM-F Local
Sensor input automatic start /
monitored start
Cascade input automatic start /
monitored start
With / without start-up testing
With automatic starting / without
automatic starting after power
failure
104
Description
• Automatic start:
The enabling circuits are switched to the operative
position, as soon as the starting condition on sensor
inputs Y12, Y22, Y34 and 1 have been fulfilled. The
start button connection terminal Y33 is not queried.
• Monitored start:
The enabling circuits are switched to the operative
position, as soon as the starting condition on sensor
inputs Y12, Y22, Y34 and 1 have been fulfilled and
the start button on terminal Y33 has subsequently
been actuated (start with the falling edge).
• 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