Marshalling Of Binary Inputs, Binary Outputs And Displays; Introduction - Siemens SIPROTEC 7SD600 System Manual

5
Preparation instructions
Numerical line differential protection SIPROTEC 7SD600 V3.0
5.5

Marshalling of binary inputs, binary outputs and displays

5.5.1

Introduction

The definition of the binary inputs and outputs shown
in the general plans (appendix A) relate to the factory
settings of the device on delivery. However, allocation
of the inputs and outputs to the relevant functions
can be altered and thus adapted to the particular local
conditions.
Marshalling of the inputs, outputs and displays is car
ried out by means of the control panel on the front
panel or via the operator interface. Handling of the
control panel is explained in further detail in section
6.2. Marshalling begins at block 60.
Marshalling requires input of the code word (see sec
tion 5.3.1). Without the code word, the settings can
be read out but not changed. A flashing cursor on the
display indicates that the device is now in alteration
mode, starting with the first alteration after input of
the code word and continuing until the end of the
marshalling process.
While the programs are running in the 7SD600, speci
fic logical functions arise which are assigned to speci
fic physical inputs and outputs.
Example: A pick up is detected by one of the integra
ted protective functions. This event is generated in
the device as an "indication" (logical function). The
indication must be made available at specific device
terminals as make contacts. Since specific device
terminals are hard-wired to one specific signal relay
(physical), e.g. signal relay 2, the device must be in
formed that the logical indication "FT.det" must be
sent to signal relay 2. Thus two operator statements
are of particular importance during marshalling: Which
protection-generated (logical) indication signal should
be transmitted to which (physical) signal relay? Seve
ral (up to 20) indication signals can be transmitted to a
single (physical) signal relay.
6 0 R O U T
5 - 20
System manual Order no. E50417-G1176-C069-A1
A similar situation applies to binary inputs. In this
case, external information is transmitted to the device
(e.g. "blocking I>>") via a (physical) input module in
order to initiate the (logical) function of blocking the
I>> stage. The relevant question to the operator is
therefore: Which signal of a (physical) binary input
should trigger which reaction in the protection de
vice? A single binary input can trigger up to 10 (logi
cal) functions.
The command relays of the device can also be mars
halled to different functions. Each command relay can
be controlled by command functions.
Signal functions can also be used in a variety of ways.
For example, a signal function can actuate several
signal relays, trip several command relays, as well as
be displayed on the LEDs and controlled by binary
inputs.
The marshalling process is structured such that each
physical input/output module (binary input, signal re
lay, LED and command relay) will be queried with re
gard to the assignment of (logical) functions.
The available logical functions are listed in the follo
wing sections.
The marshalling parameter blocks are reached by
scrolling with the keys B (forwards) or Y (back
wards), " (next level) and A (previous level). If the
device is ready to run and in its initial state in level 1,
you can reach the start of the marshalling blocks as
follows (see Figure 5.11):
D Press the B key (forwards),
D use the " key (next level) to switch to the second
operating level,
D scroll with the B key until block 60 appears on the
display:
[6000]
Beginning of the marshalling blocks
Siemens AG January 1999