Siemens 7SC80 Manual page 24

Introduction
1.1 Overall Operation
Front Elements
Optical displays (LEDs) on the device front indicate whether the device is ready for operation.
HMI Interface
The HMI of the device is used to connect the operator panel. The operator panel can be permanently attached
to the 7SC80 or it can be detached. The operator panel contains 32 LEDs for displaying operating states or
indications and a 6-line field for displaying operational indications and measured values or on the Web
Monitor a graphical field for displaying the control display. You can also operate the device using the keypads,
for example, for activating or deactivating equipment.
Interfaces
Communication with DIGSI can be effected via the USB-DIGSI interface or via port F (system/service inter-
face). This allows all device functions to be operated.
In addition to device communication via DIGSI, port F can also be used to transmit all device data to a central
analysis device or a control center. Depending on the application, this interface can provide various protocols
and physical transmission modes to suit the particular application.
Power Supply
A power supply unit (Vaux or PS) delivers power to the functional units using the different voltage levels.
Voltage dips may occur if the voltage supply system (substation battery) becomes short-circuited. Usually,
they are bridged by a capacitor (see also Technical Data).
A replaceable buffer battery is located on the side of the device.
24 SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017