Dahlander Reversing Starter" Control Function - Siemens SIMOCODE pro System Manual

Motor control
4.2.10

"Dahlander reversing starter" control function

Description
This control function can be used to change the direction of rotation of a
motor at both speeds.
Control commands
• RIGHT - SLOW: Start with "ON >" activates the QE2 contactor control (RIGHT-
SLOW)
• RIGHT - FAST: Start with "ON >>" first activates the QE3 contactor control
(star contactor FAST) and then immediately activates the QE1 contactor
control (RIGHT-FAST)
• LEFT - SLOW: Start with "ON <" activates the QE4 contactor control
(LEFT-SLOW)
• LEFT - FAST: Start with "ON <<" first activates the QE3 contactor control (star
contactor FAST) and then immediately activates the QE5 contactor control
(LEFT-FAST)
• Stop with "OFF" deactivates the contactor controls.
The control commands can be issued to SIMOCODE pro from arbitrary
control stations (see also the description of "control stations"). Thus, the
inputs (plugs) must be connected to the corresponding sockets, preferably
to the "Enabled control command" sockets.
It does not matter in what order the control commands are given.
Every fault message causes the contactor control to be deactivated.
Switching the direction of rotation
The direction of rotation can be switched once the "Status - ON >" or "Status
- ON <" signal has expired (motor is switched off) AND the interlocking time
has elapsed:
• Via the OFF control command.
• Directly, when the "Saving change-over command" is activated.
SIMOCODE pro prevents both contactors from switching on at the same
time. Switching from one direction of rotation to the other can be delayed
via the "interlocking time".
Switching the speed
The speed can be switched once the "Feedback ON" signal has expired
(motor is switched off) AND when changing from "FAST" => "SLOW" after
the change-over pause has elapsed:
• Via the OFF control command.
• Directly when "Saving change-over command" is activated.
4-40
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03