Control Functions; Description - Siemens SIMOCODE pro System Manual

Motor control
4.2

Control functions

4.2.1

Description

Control functions (e.g. direct starters, reversing starters) are used for
controlling load feeders.
They have the following important features:
• Monitoring the switch-on/switch-off process
• Monitoring the ON/OFF status
• Tripping if a fault occurs.
For monitoring these statuses, SIMOCODE pro uses the auxiliary control
input "Feedback ON", which is usually derived directly from the current flow
in the main circuit via the current measuring modules.
All necessary interlocks and connections for the corresponding applications
are already implemented in the control functions.
Control functions contain:
• Plugs
– control commands (ON <<, ON <, OFF, ON >, ON >>) that are usually
connected with the "Enabled control command" sockets.
• Auxiliary control inputs (plug
• Sockets
– Contactor controls QE1 to QE5.
– Displays (lamp controls) QL, QLS.
– Statuses, e.g. "Status - ON <<, Status - ON >>".
– Faults, e.g. "Fault - Feedback (FB) ON",
"Fault - Antivalence".
• Settings, e.g. interlocking time, non-maintained command mode ON/OFF, etc.
• A logic component with all necessary interlockings and connections for the
control function.
• Like control functions, the motor protection with its parameters and signals is
active "at a higher level in the background". Motor protection and thermistor
protection are independent functions that switch off the motor when
activated via the control functions. Detailed description: See
"Motor protection".
4-10
for
), e.g. Feedback ON
for
Chapter 3
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03