Sel 751A - Figure 8.18 CONTROL Menu and OUTPUTS Submenu; Figure 8.19 CONTROL Menu and LOCAL BITS Submenu

8.9
Date Code 20100129 Instruction Manual SEL-751A Relay
Front-Panel Operations
Human-Machine Interface
Select the Close menu item to assert Relay Word bit CC that closes the
breaker via the CL SEL
OGIC equation (see Figure 4.30). Note that this
requires Level 2 access.
Select the
Outputs menu item from the CONTROL menu as shown in
Figure 8.18 to test (pulse) SEL-751A output contacts and associated circuits.
Choose the output contact by navigating through the
OUTPUT menu and test it
by pressing the {ENT} pushbutton. Note that testing the output contact requires
Level 2 access and reconfirmation.
Figure 8.18 CONTROL Menu and OUTPUTS Submenu
Select the Local Bits menu item from the CONTROL menu for local control
action. Local bits take the place of traditional panel switches, and perform
isolation, open, close, or pulse operations.
With the settings as per the example in Section 4 (see Local Bits on page 4.119
for more information), local bit 1 replaces a supervisory switch. Figure 8.19
shows the screens in closing the supervisory switch. In this operation, local bit
LB01 is deasserted (SUPER SW = OPEN), and changes to asserted (SUPER
SW = CLOSE) as shown in the final screen of Figure 8.19.
Figure 8.19 CONTROL Menu and LOCAL BITS Submenu
CONTROL
Open
Close
Outputs
Local Bits
OUTPUTS
OUT101
OUT102
OUT103
.
.
.
(Outputs Selected)
LOCAL BITS
SUPERV SW = OPEN
SUPERV SW = OPEN
CLOSE
CLOSE
YES No
S UPERV SW = CLOS E
OPEN
CONTROL
Open
Close
Outputs
Local Bits
(Local Bits Selected)
(SUPERV SW Selected)
(CLOSE Selected)
(Yes Selected)