5-136 L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUALSYSTEM SETUP CHAPTER 5: SETTINGS5SWITCH 1 CLOSE — This setting selects an operand that creates a programmable signal to operate a contact output to closedisconnect switch 1.SWITCH 1 BLK CLOSE — This setting selects an operand that prevents closing of the disconnect switch. This setting can beused for select-before-operate functionality or to block operation from a panel switch or from SCADA.SWTCH 1 ΦA/3P CLSD — This setting selects an operand, usually a contact input connected to a disconnect switch auxiliaryposition tracking mechanism. This input is a normally-open 89/a status input to create a logic 1 when the disconnectswitch is closed. If the SWITCH 1 MODE setting is selected as “3-Pole,” this setting selects a single input as the operand usedto track the disconnect switch open or closed position. If the mode is selected as “1-Pole,” the input mentioned is used totrack phase A and the SWITCH 1 ΦB and SWITCH 1 ΦC settings select operands to track phases B and C, respectively.SWTCH 1 ΦA/3P OPND — This setting selects an operand, usually a contact input, that is a normally-closed 89/b status inputto create a logic 1 when the disconnect switch is open. If a separate 89/b contact input is not available, then an inverted89/a status signal can be used.SWITCH 1 ΦB CLOSED — If the mode is selected as three-pole, this setting has no function. If the mode is selected as single-pole, this input is used to track the disconnect switch phase B closed position as outlined for phase A.SWITCH 1 ΦB OPENED — If the mode is selected as three-pole, this setting has no function. If the mode is selected as single-pole, this input is used to track the disconnect switch phase B opened position as outlined for phase A.SWITCH 1 ΦC CLOSED — If the mode is selected as three-pole, this setting has no function. If the mode is selected as single-pole, this input is used to track the disconnect switch phase C closed position as outlined for phase A.SWITCH 1 ΦC OPENED — If the mode is selected as three-pole, this setting has no function. If the mode is selected as single-pole, this input is used to track the disconnect switch phase C opened position as outlined for phase A.SWITCH 1 TOPERATE — This setting specifies the required interval to overcome transient disagreement between the 89/aand 89/b auxiliary contacts during disconnect switch operation. If transient disagreement still exists after this time hasexpired, the SWITCH 1 BAD STATUS FlexLogic operand is asserted for alarm or blocking purposes.SWITCH 1 ALARM DELAY — This setting specifies the delay interval during which a disagreement of status among the three-pole position tracking operands do not declare a pole disagreement. This allows for non-simultaneous operation of thepoles.IEC 61850 functionality is permitted when the L60 is in “Programmed” mode and not in local control mode.
