Applications
3.2 Controlling the switching devices
3KC ATC6500 transfer control device
Manual, 05/2019, L1V30538268002A-01
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3.2.1
Controlling motor-driven circuit breakers
The control of motor-driven circuit breakers requires four outputs (open and close commands
for Source 1 and Source 2) and two inputs for circuit breaker status feedback for the
application with two circuit breakers. If a further circuit breaker is used (see chapter Load
management (Page 20)) an additional 2 outputs (the commands Open / Close for the tie
breaker) and one input for the status of the tie breaker must be wired. For the control of the
tie breaker additional outputs can be attached by means of expansion modules.
Additional optional inputs may be required for alarm signals and TRIP.
●
Open and close commands can be output as a continuous signal or a pulse. For the
continuous signal, the pulse is applied continuously until the circuit breaker has reached
the required position.
●
The signal type (continuous signal or pulse) for the two circuit breakers can be selected
by setting the appropriate parameter under P08.01 in menu P08 to "Brk. Pul." or "Brk.
Con.". The control of the tie breaker is defined by parameter P02.22 in menu P02. For
this too, the signal setting can be adapted accordingly.
●
The status for TRIP is ignored for a 15-second window every time an open command is
sent to the circuit breakers. This prevents a false alarm from being triggered if the circuit
breakers temporarily signal the TRIP status through their alarm switches while opening.
This has no effect on the function of the circuit breaker.
●
If feedback inputs (circuit breaker status) are used and the circuit breaker does not close,
a second attempt is made before triggering an alarm.
See also
Connection (Page 83)
Parameters (Page 160)
3.2.2
Controlling remotely operated transfer switching equipment
The control of remotely operated transfer switching equipment (single motor operator) is
similar to the control of motor-driven circuit breakers, however it requires only three outputs
(close Source 1, open both sources, close Source 2) and two inputs for the status of the
transfer switching equipment.
●
The command mode (continuous signal or pulse) can be selected by setting the
appropriate parameter under P08.01 in menu P08 to "Chg. Pul." or "Chg. Con.".
See also
Connection (Page 83)
Parameters (Page 160)
