GE M60 Instruction Manual page 372

CONTROL ELEMENTS
The M60 can control the transition of a motor start from reduced to full voltage. This feature uses motor load and a
supervisory timer to initiate a one second control signal (the
voltage. The feature can also assert a trip signal (the
timer transitions do not occur as expected. This transition can be defined as current only, current or timer, or current and
timer.
5
REDUCED VOLT FLA
MOTOR FULL LOAD
REDUCED VOLT CTRL
All FlexLogic operands are asserted upon the initiation of a motor start. The
when the transition timer expires if the motor load never exceeds the
NOTE status is starting. The
has dropped below the motor full load current setting; that is, the motor status is not starting.
REDUCED VOLTAGE STARTING
5-244
TRANSITION MODE:

Current Only
REDUCED VOLT FLA:

125% FLA
REDUCED VOLT TIMER:

10.0 s
REDUCED VOLT BLOCK:

Off
REDUCED VOLT TARGET:

Self-reset
REDUCED VOLT EVENTS:

Disabled
Figure 5-139: Reduced voltage starting current characteristic
Motor
FLA
current
(% FLA)
setting
setting
AMPS
FlexLogic™
operand
states
MOTOR STARTING
MOTOR RUNNING
REDUCED VOLT CTRL
— This setting enables and disables the reduced voltage starting feature.
Range: Current Only, Current or Timer,
Current and Timer
Range: 25 to 300% FLA in steps of 1
Range: 1.0 to 600.0 s in steps of 0.1
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
REDUCED VOLT CTRL
operand) from the starting logic if the current or
REDUCED VOLT OP
When the current falls below the
REDUCED VOLT
setting and/or the
REDUCED VOLT TIMER
the REDUCED VOLT CTRL operand asserts for 1 second.
operand is set when the transition timer expires and the motor load
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
operand) that can be used to switch to full
setting expires,
signifies an
open transition
time
833752A1.CDR
operand is set
REDUCED VOLT OP
setting and the motor
REDUCED VOLT FLA