- General Electric Computer Accessories User Manual

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• Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Function description
The following description explains the operation of SLD1. It also applies to SLD2
and SLD3.
Parameters SLD1 input 1 select and SLD1 input 2 select select device variables. They
define the inputs for SLD1. The following table specifies how the inputs are formed
based on the value of parameter SLD1 input 1 abs val.
SLD1 input 1 abs val SLD1 Input Values
False Input 1 = SLD1 input 1 select pointer value
Input 2 = SLD1 input 2 select pointer value
True Input 1 = Absolute value of SLD1 input 1 select
pointer value
Input 2 = SLD1 input 2 select pointer value
The parameter SLD1 compare mode determines the type of comparison that is
performed on the two inputs. It determines how the configuration parameters SLD1
sensitivity, SLD1 hysteresis, SLD1 pick up delay, and SLD1 drop out delay are
interpreted. It determines how the output SLD1 status is formed. The following
tables specify the behavior of SLD1 for the different enumerations of SLD1 compare
mode.
SLD1 compare mode = In1-In2>Sen
Turn on condition (Input 1 - Input 2) > SLD1 sensitivity
Turn on delay time Turn on condition must remain valid for SLD1 pick up
delay. After the delay SLD1 status = True.
Turn off condition (Input 1 - Input 2) <= (SLD1 sensitivity - SLD1
hysteresis)
Turn off delay time
Turn off condition must remain valid for SLD1 drop out
delay. After the delay SLD1 status = False.
SLD1 compare mode = In1-In2<Sen
Turn on condition (Input 1 - Input 2) < SLD1 sensitivity
Turn on delay time
Turn on condition must remain valid for SLD1 pick up
delay. After the delay SLD1 status = True.
Turn off condition
(Input 1 - Input 2) >= (SLD1 sensitivity + SLD1
hysteresis)
Turn off delay time Turn off condition must remain valid for SLD1 drop out
delay. After the delay SLD1 status = False.
SLD1 compare mode = In1<>In2
Turn on condition Absolute value of (Input 1 - Input 2) > SLD1 sensitivity
Turn on delay time Turn on condition must remain valid for SLD1 pick up
delay. After the delay SLD1 status = True.
Turn off condition Absolute value of (Input 1 - Input 2) <=(SLD
sensitivity-SLD1 hysteresis)
Turn off delay time
Turn off condition must remain valid for SLD1 drop out
delay. After the delay SLD1 status = False.