ABB REF 542plus, Operator'S Manual, Page: 14 / 134

A051328
Fig. 3.1.-1 HMI control area
This section of the display shows the Single Line Diagram (SLD) of the controlled
panel and the measurement bars. Text can be added in this section to improve the
understanding of SLD.
*
Command buttons
The Primary Object Control can be performed with the following push buttons to
allow operating the primary objects if configured as
“
selectable
”
. The command
push buttons for local operation of the switching devices are:
Open: to open the selected object.
Close: to close the selected object.
Select: to select the object. The selected object appears highlighted.
CB Fast Opening: to allow opening of the circuit breaker independently from
the selected control mode. When pressed simultaneously with the normal
open button, this button allows opening the circuit breaker independently from
the selected control mode. This feature must be enabled in the unit with the
Operating Tool.
*
E-Keys Sensor: this is the sensor for the electronic keys. The sensor
automatically detects which key has been inserted. The two keys are usually
labelled
“
Protect
”
and
“
Control
”
to distinguish them.
*
Protection key: is specialized to the protection environment allowing changing of
parameters and other functions related to the protection.
*
Control Key: this is dedicated to the control modes. It allows changing the
operating mode of REF 542plus. The different operating modes discipline the
access to the primary objects by the different REF 542plus interfaces (HMI and
SCADA). When required, a Super User key to access both modes can be
14
REF 542plus REF 542plus
Multifunction Protection and Switchgear Control Unit
Operator's manual
1MRS755869