Manual Reversal In The Other Direction Of Rotation - Siemens SIMOCODE pro V Manual

2 Operating principle
2.2.5

Manual reversal in the other direction of rotation

Enable the operating mode "Save change-over command" in the menu
"Parameters > Motor control > Control function > Operation mode".
The motor control is thereby parameterized in such a way that a direct reversal is
possible via the active control station without the stop command needing to be
issued.
Figure 2-10
Because the "ON>" command is saved by signal conditioning 1, it must also be
cleared in the logic by resetting the signal modification when the system is
switched to run in the opposite direction. For this purpose, the "ON<" command
from the "Control station" function block is interconnected with the reset input of
signal conditioning 1 via truth table TT1.
Because the "ON<" command is not saved separately in the logic, direct reversal
back to the direction of conveying flow is effected without any additional logical
connections as long as the pump was manually commanded to reverse direction.
However, if the "ON<" command is pending due to the automatic reversal
procedure as a result of a forward blocking, the pump is manually set to run in the
original direction of conveying flow by resetting Timer 1. For this purpose, the
enabled "ON>" command at the output of the "Control station" function block is
interconnected with the reset input of Timer 1 via truth tables TT5 and TT8.
Blocking Protection for Pumps with SIMOCODE pro V
Article ID: 109478058, V2.0, 09/2020
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