5-328 L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CONTROL ELEMENTS CHAPTER 5: SETTINGS
5
5.8.4 Selector switch
SETTINGS CONTROL ELEMENTS SELECTOR SWITCH SELECTOR SWITCH 1(2)
The selector switch element is intended to replace a mechanical selector switch. Typical applications include setting group
control or control of multiple logic sub-circuits in user-programmable logic.
The element provides for two control inputs. The step-up control allows stepping through selector position one step at a
time with each pulse of the control input, such as a user-programmable pushbutton. The three-bit control input allows
setting the selector to the position defined by a three-bit word.
The element allows pre-selecting a new position without applying it. The pre-selected position gets applied either after
time-out or upon acknowledgement via separate inputs (user setting). The selector position is stored in non-volatile
memory. Upon power-up, either the previous position is restored or the relay synchronizes to the current three-bit word
(user setting). Basic alarm functionality alerts the user under abnormal conditions; for example, the three-bit control input
being out of range.
A selector switch runs every two power cycles.
SELECTOR 1 FULL RANGE — This setting defines the upper position of the selector. When stepping up through available
positions of the selector, the upper position wraps up to the lower position (position 1). When using a direct three-bit control
word for programming the selector to a desired position, the change would take place only if the control word is within the
range of 1 to the
SELECTOR FULL RANGE. If the control word is outside the range, an alarm is established by setting the
SELECTOR ALARM FlexLogic operand for three seconds.
SELECTOR SWITCH 1
SELECTOR 1 FUNCTION:
Disabled
Range: Disabled, Enabled
SELECTOR 1 FULL
RANGE: 7
Range: 1 to 7 in steps of 1
SELECTOR 1 TIME-OUT:
5.0 s
Range: 3.0 to 60.0 s in steps of 0.1
SELECTOR 1 STEP-UP:
Off
Range: FlexLogic operand
SELECTOR 1 STEP-UP
MODE: Time-out
Range: Time-out, Acknowledge
SELECTOR 1 ACK:
Off
Range: FlexLogic operand
SELECTOR 1 3BIT A0:
Off
Range: FlexLogic operand
SELECTOR 1 3BIT A1:
Off
Range: FlexLogic operand
SELECTOR 1 3BIT A2:
Off
Range: FlexLogic operand
SELECTOR 1 3BIT
MODE: Time-out
Range: Time-out, Acknowledge
SELECTOR 1 3BIT ACK:
Off
Range: FlexLogic operand
SELECTOR 1 POWER-UP
MODE: Restore
Range: Restore, Synchronize, Sync/Restore
SELECTOR 1 TARGETS:
Self-reset
Range: Self-reset, Latched, Disabled
SELECTOR 1 EVENTS:
Disabled
Range: Disabled, Enabled
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