Applications
3.2 Controlling the switching devices
3KC ATC6500 transfer control device
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Manual, 05/2019, L1V30538268002A-01
3.2
Controlling the switching devices
The ATC6500 can control various devices for automatic transfer switching. How the control
of the switching devices can be implemented is shown below.
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Depending on the type of transfer device used, the appropriate circuit diagram shall be
used (see chapter Connection (Page 83)), as well as the programmable inputs/outputs on
the ATC6500 (see chapter Inputs and outputs of the ATC6500 (Page 144)).
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Programmable outputs are set by default for the use of circuit breakers (see chapter P13
- Digital outputs (Page 180))
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The application is to be selected in accordance with the requirement (see chapter Load
management with the ATC6500 (Page 20) and chapter Parameterization (Page 155))
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The device status inputs (e.g. status of circuit breakers) shall be wired according to the
circuit diagram, so as to ensure reliable system operation.
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Nonetheless, it is possible to manage without wiring the status inputs. This enables the
programmable inputs to be used for other functions. In this case the device behaves as if
the status feedback messages were received immediately.
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If the device status inputs are not used, then after power-on the ATC6500 sends an
"open" command, in order to put the switching devices in a defined status.
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If the device status inputs are used, then after power-on the ATC6500 does not send any
commands to the breaker. The corresponding switching devices are not controlled until
anomalies occur in the network.
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Internal control relays are neither electrically nor mechanically interlocked.
