GE B30 Instruction Manual page 439

CHAPTER 5: SETTINGS
— This setting defines the selector mode of operation. When set to "Time-out," the selector
SELECTOR 1 STEP-UP MODE
changes its position after a pre-defined period of inactivity at the control input. The change is automatic and does not
require any explicit confirmation of the intent to change the selector's position. When set to "Acknowledge," the selector
changes its position only after the intent is confirmed through a separate acknowledging signal. If the acknowledging
signal does not appear within a pre-defined period of time, the selector does not accept the change and an alarm is
established by setting the
SELECTOR STP ALARM
— This setting specifies an acknowledging input for the stepping up control input. The pre-selected
SELECTOR 1 ACK
position is applied on the rising edge of the assigned operand. This setting is active only under "Acknowledge" mode of
operation. The acknowledging signal must appear within the time defined by the
activity of the control input. A user-programmable pushbutton is typically configured as the acknowledging input.
, , and
SELECTOR 1 3BIT A0 A1 A2
pre-selects the position using the following encoding convention:
A2 A1 A0 Position
0 0 0 rest
0 0 1 1
0 1 0 2
0 1 1 3
1 0 0 4
1 0 1 5
1 1 0 6
1 1 1 7
The "rest" position (0, 0, 0) does not generate an action and is intended for situations when the device generating the three-
bit control word is having a problem. When
seconds after the last activity of the three-bit input. When
SELECTOR 1 TIME-OUT
the pre-selected position is applied on the rising edge of the
The stepping up control input (
mutually: once the stepping up sequence is initiated, the three-bit control input is inactive; once the three-bit control
sequence is initiated, the stepping up input is inactive.
— This setting defines the selector mode of operation. When set to "Time-out," the selector changes
SELECTOR 1 3BIT MODE
its position after a pre-defined period of inactivity at the control input. The change is automatic and does not require
explicit confirmation to change the selector position. When set to "Acknowledge," the selector changes its position only
after confirmation via a separate acknowledging signal. If the acknowledging signal does not appear within a pre-defined
period of time, the selector rejects the change and an alarm established by invoking the
for three seconds.
— This setting specifies an acknowledging input for the three-bit control input. The pre-selected
SELECTOR 1 3BIT ACK
position is applied on the rising edge of the assigned FlexLogic operand. This setting is active only under the
"Acknowledge" mode of operation. The acknowledging signal must appear within the time defined by the
setting after the last activity of the three-bit control inputs. Note that the stepping up control input and three-bit
OUT
control input have independent acknowledging signals (
— This setting specifies the element behavior on power up of the relay.
SELECTOR 1 POWER-UP MODE
When set to "Restore," the last position of the selector (stored in the non-volatile memory) is restored after powering up the
relay. If the position restored from memory is out of range, position 0 (no output operand selected) is applied and an alarm
is set (
SELECTOR 1 PWR ALARM
When set to "Synchronize," the selector switch acts as follows. For two power cycles, the selector applies position 0 to the
switch and activates
SELECTOR 1 PWR ALARM
dictated by the three-bit control input. This operation does not wait for time-out or the acknowledging input. When the
synchronization attempt is unsuccessful (that is, the three-bit input is not available (0,0,0) or out of range), then the selector
switch output is set to position 0 (no output operand selected) and an alarm is established (
B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
output FlexLogic operand for three seconds.
— These settings specify a three-bit control input of the selector. The three-bit control word
SELECTOR 1 3BIT MODE
) and the three-bit control inputs (
SELECTOR 1 STEP-UP
SELECTOR 1 ACK
).
. After two power cycles expire, the selector synchronizes to the position
SELECTOR 1 TIME-OUT
is "Time-out," the pre-selected position is applied in
SELECTOR 1 3BIT MODE
acknowledging input.
SELECTOR 1 3BIT ACK
SELECTOR 1 3BIT A0
SELECTOR BIT ALARM
and
SELECTOR 1 3BIT ACK
CONTROL ELEMENTS
setting after the last
is "Acknowledge,"
through ) lock-out
A2
FlexLogic operand
SELECTOR TIME-
, accordingly).
).
SELECTOR 1 PWR ALARM
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