GE 339 User Manual

6–118 339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
S4 CONTROLS CHAPTER 6: SETPOINTS
S4 Controls
Figure 6-50: Main controls menu with BREAKER
Figure 6-51: Main controls menu with CONTACTOR
Virtual inputs
There are 32 virtual inputs that can be individually programmed to respond to input
commands entered via the relay keypad, or by using communication protocols.
PATH: SETPOINTS > S4 CONTROLS > VIRTUAL INPUTS.
VIRTUAL INPUT 1
Range: Off, On
Default: Off
The state of each virtual input can be controlled under
SETPOINTS > S4 CONTROL > VIRTUAL
INPUTS menu. For this purpose, each of the virtual inputs selected for control need be
“Enabled” under
SETPOINTS > S5 INPUTS/OUTPUTS > VIRTUAL INPUTS, and its type “Self-
Reset” or “Latched” specified.
If Self-Reset type was selected, entering “On” command will lead to a pulse of one
protection pass. To prolong the time of the virtual input pulse, one can assign it as a trigger
source to a Logic Element with a dropout timer set to the desired pulse time. If “Latched”
type is selected, the state of the virtual input will be latched, upon entering “On” command.
Refer to the logic diagram in the
S5 INPUTS/OUTPUTS > VIRTUAL INPUTS section for more
details.
S4 CONTROLS
VIRTUAL INPUTS
LOGIC ELEMENTS
BREAKER CONTROL
BREAKER FAIL
CT FAILURE
VT FUSE FAILURE
WELDED CONTACTOR
START INHIBIT
EMERGENCY RESTART
LOCKOUT RESET
RESET
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896767A3. cdr
S4 CONTROLS
VIRTUAL INPUTS
LOGIC ELEMENTS
WELDED CONTACTOR
START INHIBIT
EMERGENCY RESTART
LOCKOUT RESET
RESET
▼
896798A1. cdr

GE 339 Specifications

General

Brand	GE
Model	339
Category	Protection Device
Language	English