GE M60

5-294 M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CONTROL ELEMENTS CHAPTER 5: SETTINGS
5
The RESTART DELAY MIN TIME setting specifies the lockout time before starting the motor after the motor has stopped. The
restart delay element asserts the RESTART DELAY OP FlexLogic operand for RESTART DELAY MIN TIME after the motor has
stopped. The element uses the motor status asserted by the Thermal Model element. The thermal protection must be
configured properly in order for this function to operate.
Figure 5-165: Restart delay logic
5.8.8 Reduced voltage starting
SETTINGS  CONTROL ELEMENTS  REDUCED VOLTAGE STARTING
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 REDUCED VOLT CTRL operand) that can be used to switch to full
voltage. The feature can also assert a trip signal (the REDUCED VOLT OP operand) from the starting logic if the current or
timer transitions do not occur as expected. This transition can be defined as current only, current or timer, or current and
timer.

RESTART DELAY
TARGET: Self-reset
Range: Self-reset, Latched, Disabled

RESTART DELAY
EVENTS: Disabled
Range: Disabled, Enabled
 REDUCED VOLTAGE
 STARTING

REDUCED VOLTAGE
STARTING: Disabled
Range: Disabled, Enabled

TRANSITION MODE:
Current Only
Range: Current Only, Current or Timer,
Current and Timer

REDUCED VOLT FLA:
125% FLA
Range: 25 to 300% FLA in steps of 1

REDUCED VOLT TIMER:
10.0 s
Range: 1.0 to 600.0 s in steps of 0.1

REDUCED VOLT BLOCK:
Off
Range: FlexLogic operand

REDUCED VOLT TARGET:
Self-reset
Range: Self-reset, Latched, Disabled

REDUCED VOLT EVENTS:
Disabled
Range: Disabled, Enabled