Siemens SIPROTEC 7SJ531 - Page 90

-ETHOD OF OPERATION3*
6
#
' #

 ,OCAL CONTROL
&OR LOCAL CONTROL THREE INDIVIDUAL KEYS OF DIFFERENT CO
LOUR ARE LOCATED AT THE LEFT SIDE OF THE KEYPAD 4HE
CONTROL KEYS CAN ONLY BE OPERATED WHEN THE FEEDER
MIMIC DIAGRAM IS SHOWN IN THE DISPLAY #OMING FROM
OTHER OPERATING MODES IT IS NECESSARY TO RETURN TO
BASIC DIAGRAM  FOR CONTROL &IRST THE SWITCHING DIREC
TION IS DEFINED BY OPERATING THE /. OR /&& KEY SEE
&IGURE 
4HE SYMBOL FOR THE CIRCUIT BREAKER STARTS FLASHING
4HE SWITCHING ITSELF IS CARRIED OUT ONLY AFTER PUSHING
THE COMMAND RELEASE KEY SEE &IGURE  )F NO
COMMAND RELEASE IS GIVEN WITHIN A PARAMETERIZED
WAITING TIME 4
%.429 THEN THE FLASHING CHANGES
INTO THE CORRESPONDING ORIGINAL STATE 4HE SWITCHING
PROCEDURE CAN BE ABORTED BEFORE THE COMMAND RE
LEASE OR DURING THE SELECTION OF THE SWITCHING DEVICE
BY MEANS OF THE KEYS 2 OR -%.5 7HEN A SWITCHING
DIRECTION IS SELECTED WHICH CORRESPONDS TO THE
SWITCHING DEVICE
S MOMENTARY STATE THE INPUT
CAUSES NO REACTION AND NO INTERRUPTION ALARM IS GIV
EN
)T CAN BE PARAMETERIZED THAT SWITCHING DEVICE CON
TROL IS RELEASED ONLY AFTER INPUT OF A CODEWORD
 "INARY INPUTS -ANUAL CLOSE-ANUAL
TRIP
#LOSING AND OPENING OF THE CIRCUIT BREAKER ARE ALSO
POSSIBLE VIA BINARY INPUTS IF THE CORRESPONDING COM
MANDS ARE MARSHALLED TO THE RELAY
S BINARY INPUTS
AND THE PARAMETERIZATION WAS CARRIED OUT ACCORDING
LY 4HE CONTROL COMMANDS ARE TRANSFERRED TO THE TWO
RELEVANT FUNCTIONS
CONTROL AND PROTECTION IN THE
RELAY 4HE BINARY INPUTS MANUAL /. AND MANUAL /&&
MUST BE ASSIGNED EITHER TO THE LOCAL OR TO THE REMOTE
CONTROL WITH RESPECT TO CHECKING THE SWITCHING AU
THORITY
 /PERATION VIA THE SYSTEM INTERFACE
#ONTROL OF THE CIRCUIT BREAKER IS POSSIBLE VIA THE SERIAL
SYSTEM INTERFACE AND CONNECTION TO THE SWITCHGEAR
CONTROL SYSTEM ,3! 4HIS REQUIRES THAT THE NECES
SARY PERIPHERAL FEATURES ARE PROVIDED PHYSICALLY IN
THE RELAY MODEL 3*
 # AS WELL AS
IN THE SWITCHGEAR &URTHERMORE SPECIFIC SETTINGS FOR
THE SERIAL INTERFACE ARE NECESSARY IN THE RELAY SEE
3ECTION 
 /PERATION VIA PERSONAL COMPUTER
#ONTROL OF THE CIRCUIT BREAKER IS POSSIBLE VIA THE OPER
ATION INTERFACE WITH A PERSONAL COMPUTER AND THE OP
ERATION PROGRAM $)'3)
Q

CONTROL KEYS
 
CODEWORD INPUT

%
FLASHING OF THE
OPERATED DEVICE
COMMAND
EXECUTION
COMMAND RELEASE
4
%.429

CODEWORD
REQUIRED
#,/3%
/0%.
COMMAND RELEASE
KEY MEANING

 S
&IGURE  3URVEY OF LOCAL CONTROL
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