Setpoints S3 Logic Inputs; Description; Logic Inputs - GE 745 TRANSFORMER MANAGEMENT RELAY Instruction Manual

5 SETPOINTS

5.5 SETPOINTS S3 LOGIC INPUTS

The 745 has two types of digital inputs: Logic Inputs have physical terminals for connecting to external con-
tacts. Virtual Inputs , on the other hand, although providing the same function as logic inputs, have no physical
external connections: a setpoint defines the state of each in terms of "ON" or "OFF".
There are 16 of each of logic inputs and virtual inputs. The state ('asserted' or 'not asserted') of each logic or
virtual input can be used to cause any of a variety of predefined logic functions, such as protection element
blocking, energization detection, etc. In addition, any logic or virtual input can be used as an input in Flex-
Logic™ equations to implement custom schemes.
SS SETPOINTS
SS S3 LOGIC INPUTS
S LOGIC INPUTS
S [ENTER] for more
S LOGIC INPUT 1
S [ENTER] for more
INPUT 1 FUNCTION
Disabled
INPUT 1 TARGET:
Self-Reset
INPUT 1 NAME:
Logic Input 1
INPUT 1 ASSERTED
STATE: Closed
GE Power Management
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these setpoints, press
EN TE R
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Range: Disabled / Enabled
Select 'Enabled' if this logic input is to be used. Selecting Disabled will never
allow this logic input to achieve the 'Asserted' (or signaling) state.
Range: None / Latched / Self-Reset
Chose None to inhibit the display of the target message when the input is
asserted. Thus an input whose "target type" is None will never disable the
LED self-test feature because cannot generate a displayable target
message.
Range: 18 alphanumeric characters
Press to begin editing the name of the logic input. The text may be
E N TE R
changed from Logic Input 1 one character at a time, using
Press to store the edit and advance to the next character position.
E N TE R
Range: Open / Closed
Select Closed as the input asserted state when connected to a normally open
contact (where the signaling state is closed). Select Open when connected to
a normally closed contact (where the signaling state is open).
745 Transformer Management Relay
5.5 SETPOINTS S3 LOGIC INPUTS

5.5.1 DESCRIPTION

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S ETPO INT

5.5.2 LOGIC INPUTS

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