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Symbols and Nomenclature
The following notational and formatting conventions are used within the remainder of this document:
Setting Menu Location
Setting:
Setting value:
Alternatives:
Binary input signal
visible to user
Binary Output visible to user
Digital signal not visible to
user, to/from another element
Digital signal not visible to
user, internal to this element
Analogue signal with signal
description
And Gate
(2 inputs shown)
Or Gate
(3 inputs shown)
Exclusive Or (XOR) Gate
(3 inputs shown)
Latch (Set/Reset)
Positive Edge Trigger
©2013 Siemens Protection Devices Limited
MAIN MENU>SUB-MENU
Elem name -Setting
value
[1st] [2nd] [3rd]
Elem Inhibit
Elem Starter
PhaseAFwd
L1 Dir Blk
IL1
&
1
=1
S
Q
R
Chapter 1) 7SR23 DAD Description Of Operation
List of settings associated with a specific
function
Appropriate list is TRUE when setting
selected.
Common setting for multiple functions
Common control input (c) for multiple
functions. All functions are enabled
when control input is TRUE.
Function.
Individual functions are enabled when
associated control input (c) is TRUE.
EVENT: IEC, Modbus, DNP etc.
Where applicable
Relay instrument
Elem Char Dir
Non-Dir
Forward
Reverse
Elem Reset Delay
c
Pickup
c
Operate
Pickup
c
Operate
EVENT
INST.
Chapter 1 Page 5 of 36
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