Motor control
SIMOCODE pro
4-62 GWA 4NEB 631 6050-22 DS 03
4.2.16 "Soft starter with reversing contactor" control function
Description
With this control function, SIMOCODE pro can activate the 3RW soft starter
including an additional reversing contactor. Thus, the 3RW soft starters are
connected via SIMOCODE pro to the PROFIBUS DP. With this control
function, SIMOCODE pro can also control the direction of rotation of the
motor (forwards and backwards).
Control commands
• Start with "ON >" activates the QE1 and QE4 contactor controls (clockwise,
i.e. forwards)
• Start with "ON <" activates the QE2 and QE4 contactor controls (counter-
clockwise, i.e. backwards)
• Stop with "OFF" first deactivates the QE4 contactor control. When the
"Feedback ON" signal is no longer issued, the QE1 / QE2 contactor control is
deactivated 3 s later in order to facilitate a smooth run down via the soft
starter.
• With "Reset", the QE3 contactor control is activated for 20 ms and sends the
soft starter an acknowledgement signal via a parameterizable relay output.
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.
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.
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