GE M60

CHAPTER 5: SETTINGS CONTROL ELEMENTS
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5-293
5
5.8.7.3 Time between starts (ANSI 66)
SETTINGS  CONTROL ELEMENTS  START SUPERVISION  TIME BETWEEN STARTS
The time between starts element prevents restart attempts in quick succession. It requires that the minimum duration
specified by the
TIME BETWEEN STARTS MIN TIME setting expires before a subsequent start attempt is allowed. The time
between starts supervising element complements the maximum starting rate element in that the former controls the time
spacing between starts and the latter limits the number of starts.
The element asserts the following three FlexLogic operands:
•The TIME-BTWN-STARTS PKP operand indicates that the time since the last start was too short. When stopped, the motor
should not be restarted until the lockout time elapses.
•The TIME-BTWN-STARTS OP operand indicates that the motor stopped when the time since the last start was too short.
Use this operand to inhibit the start command.
•The TIME-BTWN-STARTS DPO operand indicates that the time between the last two starts was long enough. When
stopped, the motor can be restarted immediately.
The element uses motor status asserted by the Thermal Model element. The thermal protection must be configured
properly in order for this function to operate.
Figure 5-164: Time between starts logic
5.8.7.4 Restart delay
SETTINGS  CONTROL ELEMENTS  START SUPERVISION  RESTART DELAY
 TIME BETWEEN
 STARTS

TIME BETWEEN STARTS
FUNCTION: Disabled
Range: Disabled, Enabled

TIME BETWEEN STARTS
MIN TIME: 20 min
Range: 0 to 300 min. in steps of 1

TIME BWN STARTS BLK:
Off
Range: FlexLogic operand

TIME BETWEEN STARTS
TARGET: Self-Reset
Range: Self-Reset, Latched, Disabled

TIME BETWEEN STARTS EVENTS:
Disabled
Range: Disabled, Enabled
 RESTART DELAY


RESTART DELAY
FUNCTION: Disabled
Range: Disabled, Enabled

RESTART DELAY
MIN TIME: 0 s
Range: 0 to 50000 s in steps of 1

RESTART DELAY BLOCK:
Off
Range: FlexLogic operand