Siemens siprotec 7SA522 User Manual page 5

Typographic and
Graphical Conven-
tions
7SA522 Manual
C53000-G1176-C119-2
Within the meaning of safety precautions of this manual and the instructions, qualified
personnel are those persons who are qualified to set up, install, place into service, and
operate this device, and who possess the following qualifications:
q
Training and instruction (or other qualification) for switching, grounding, and desig-
nating devices and systems.
q
Training or instruction in accordance with safety standards for care and use of cer-
tain safety equipment.
q
First aid training.
The following text formats are used to identify concepts giving device information de-
scribed by the text flow:
3DUDPHWHU QDPHV, or identifiers for configuration or function parameters that appear
in the device display or on the screen of a PC (with DIGSI
script (same point size) bold text. This also applies to header bars for selection menus.
3DUDPHWHU FRQGLWLRQV, or possible settings of parameters that appear in the de-
vice display or on the screen of a PC (with DIGSI
style. This also applies to selection items for selection menus.
"$QQXQFLDWLRQV", or identifiers for information produced by the device or required
by other devices or from the switch-gear is shown in mono-script (same point size) and
placed into quotation marks.
For diagrams in which the identifier type results from the representation itself, text con-
ventions may differ from the above-mentioned.
The following symbols are used in diagrams:
device-internal (logical) input signal
GND Fault
device-internal (logical) output signal
GND Fault
U
internal input signal of an analog quantity
L1–L2
F#
external binary input signal with function number F# (binary input,
>Release
respective annunciation to the device)
F#
external binary output signal with function number F# (annunciation
Dev. Trip
from device)
Parameter address
Qh…h€r‡r…Áh€r
example of a parameter switch )81&7,21 with address  and
 )81&7,21
possible conditions 2Q and 2II
2Q
2II
Parameter Conditions
®
4) are shown in mono-
®
4), are additionally shown in italic
Preface
iii