The pulse duration of the remote set, remote reset, or local pushbutton must be at least 50 ms to operate the push-
button. This allows the user-programmable pushbuttons to properly operate during power cycling events and vari-
ous system disturbances that may cause transient assertion of the operating signals.
The local and remote operation of each user-programmable pushbutton can be inhibited through the
settings, respectively. If local locking is applied, the pushbutton will ignore set and reset commands
PUSHBTN 1 REMOTE
executed through the front panel pushbuttons. If remote locking is applied, the pushbutton will ignore set and reset com-
mands executed through FlexLogic™ operands.
The locking functions are not applied to the autoreset feature. In this case, the inhibit function can be used in SBO control
operations to prevent the pushbutton function from being activated and ensuring "one-at-a-time" select operation.
The locking functions can also be used to prevent the accidental pressing of the front panel pushbuttons. The separate
inhibit of the local and remote operation simplifies the implementation of local/remote control supervision.
Pushbutton states can be logged by the event recorder and displayed as target messages. In latched mode, user-defined
messages can also be associated with each pushbutton and displayed when the pushbutton is on or changing to off.
PUSHBUTTON 1 FUNCTION: This setting selects the characteristic of the pushbutton. If set to "Disabled", the push-
button is not active and the corresponding FlexLogic™ operands (both "On" and "Off") are de-asserted. If set to "Self-
Reset", the control logic is activated by the pulse (longer than 100 ms) issued when the pushbutton is being physically
pressed or virtually pressed via a FlexLogic™ operand assigned to the
When in "Self-Reset" mode and activated locally, the pushbutton control logic asserts the "On" corresponding Flex-
Logic™ operand as long as the pushbutton is being physically pressed, and after being released the deactivation of
the operand is delayed by the drop out timer. The "Off" operand is asserted when the pushbutton element is deacti-
vated. If the pushbutton is activated remotely, the control logic of the pushbutton asserts the corresponding "On" Flex-
Logic™ operand only for the time period specified by the
If set to "Latched", the control logic alternates the state of the corresponding FlexLogic™ operand between "On" and
"Off" on each button press or by virtually activating the pushbutton (assigning set and reset operands). When in the
"Latched" mode, the states of the FlexLogic™ operands are stored in a non-volatile memory. Should the power supply
be lost, the correct state of the pushbutton is retained upon subsequent power up of the relay.
PUSHBTN 1 ID TEXT: This setting specifies the top 20-character line of the user-programmable message and is
intended to provide ID information of the pushbutton. Refer to the User-definable displays section for instructions on
how to enter alphanumeric characters from the keypad.
PUSHBTN 1 ON TEXT: This setting specifies the bottom 20-character line of the user-programmable message and is
displayed when the pushbutton is in the "on" position. Refer to the User-definable displays section for instructions on
entering alphanumeric characters from the keypad.
PUSHBTN 1 OFF TEXT: This setting specifies the bottom 20-character line of the user-programmable message and is
displayed when the pushbutton is activated from the on to the off position and the
"Latched". This message is not displayed when the
status is implied to be "Off" upon its release. The length of the "Off" message is configured with the
PUSHBTN 1 HOLD: This setting specifies the time required for a pushbutton to be pressed before it is deemed active.
This timer is reset upon release of the pushbutton. Note that any pushbutton operation will require the pushbutton to be
pressed a minimum of 50 ms. This minimum time is required prior to activating the pushbutton hold timer.
PUSHBTN 1 SET: This setting assigns the FlexLogic™ operand serving to operate the pushbutton element and to
PUSHBUTTON 1 ON
PUSHBTN 1 RESET: This setting assigns the FlexLogic™ operand serving to reset pushbutton element and to assert
operand. This setting is applicable only if pushbutton is in latched mode. The duration of the
PUSHBUTTON 1 OFF
incoming reset signal must be at least 50 ms.
PUSHBTN 1 AUTORST: This setting enables the user-programmable pushbutton autoreset feature. This setting is
applicable only if the pushbutton is in the "Latched" mode.
PUSHBTN 1 AUTORST DELAY: This setting specifies the time delay for automatic reset of the pushbutton when in
the latched mode.
PUSHBTN 1 REMOTE: This setting assigns the FlexLogic™ operand serving to inhibit pushbutton operation from the
operand assigned to the
PUSHBUTTON 1 FUNCTION
FLASH MESSAGE TIME
operand. The duration of the incoming set signal must be at least 100 ms.
PUSHBTN 1 SET
PUSHBTN 1 RESET
L60 Line Phase Comparison System
PUSHBTN 1 SET
PUSHBTN 1 DROP-OUT TIME
is "Self-reset" as the pushbutton operand
5.2 PRODUCT SETUP
PUSHBTN 1 LOCAL
PUSHBUTTON 1 FUNCTION