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5. Control modes
5.1. Available control modes
Local Control
It is possible to control the circuit breaker and other primary objects from the
HMI using the object control buttons. Open and close operations are possible
only if the interlocking logic programmed into the unit allow them. Remote
control from the SCADA is inhibited. Uploading and downloading the
configuration via the optical interface is possible.
Remote Control
The control of the circuit breaker and other primary objects from the HMI is
inhibited. The control is possible only remotely. Uploading and downloading
the configuration via the optical interface is possible.
No Control
It is not possible to control the circuit breaker and other primary objects both
from the HMI and remotely. Any kind of operation apart from the protection
trip is inhibited. Uploading and downloading the configuration via the optical
interface is possible.
Local and Remote Control
Both the local control and remote control from HMI are possible. Uploading
and downloading the configuration via the optical interface is possible.
The selection of this control mode requires caution, because
operations are allowed both from the HMI and remotely.
5.2. Changing the control modes
The next figure shows how to change the control mode. At first the menu E-
Key must be selected. Then the control key must be placed in the electronic
key sensor.
Select then the desired control mode by using UP
and DOWN until it
is highlighted. Confirm the selection by pressing ENTER
. After pressing
ENTER
, the E-key status menu will appear again. Verify that the required
control mode has been properly set in the unit looking in the lower left corner
of the HMI. A text string there indicates the currently selected control and
protection mode.
1MRS755869
Multifunction Protection and Switchgear Control
Unit
Operator's manual
REF542plus
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