Digital Elements - GE M60 Instruction Manual

CONTROL ELEMENTS
REDUCED VOLT TIMER

5.8.9 Digital elements

5
SETTINGS  CONTROL ELEMENTS  DIGITAL ELEMENTS  DIGITAL ELEMENT 1(48)
 DIGITAL ELEMENT 1

Digital elements run once per power system cycle.
As such they can easily fail to react to an input signal or a block signal with a duration less than one power system
cycle. This also means that digital element output can react up to one power system cycle later than the pickup
and reset delay settings indicate.
Do not use digital elements with transient signals, such as communications commands. Do not use digital
elements where random delays of up to one cycle cannot be tolerated, such as in high speed protection.
5-296
— This setting specifies the time-out value of the transition timer used in the selected transition mode.
Figure 5-167: Reduced voltage starting logic
DIGITAL ELEMENT 1

FUNCTION: Disabled
DIG ELEM 1 NAME:

Dig Element 1
DIG ELEM 1 INPUT:

Off
DIG ELEM 1 PICKUP

DELAY:
DIG ELEM 1 RESET

DELAY:
DIGITAL ELEMENT 1

PICKUP LED: Enabled
DIG ELEM 1 BLOCK:

Off
DIGITAL ELEMENT 1

TARGET: Self-reset
DIGITAL ELEMENT 1

EVENTS: Disabled
Range: Disabled, Enabled
Range: up to 16 alphanumeric characters
Range: FlexLogic operand
Range: 0.000 to 999999.999 s in steps of 0.001
0.000 s
Range: 0.000 to 999999.999 s in steps of 0.001
0.000 s
Range: Disabled, Enabled
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS