GE M60 Instruction Manual page 370

Motor protection system
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CONTROL ELEMENTS
The
STARTS-PER-HOUR PKP
stopped, the motor is not restarted until the lockout time elapses.
The
STARTS-PER-HOUR OP
already reached. Use this operand to inhibit the start command.
The
STARTS-PER-HOUR DPO
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.
STARTS/HR FUNCTION:
Enabled = 1
STARTS/HR BLOCK:
Off
FLEXLOGIC OPERANDS
MOTOR STARTING
MOTOR OFFLINE
SETTINGS / SYSTEM
SETUP / MOTOR /
EMERGENCY RESTART:
5
Off
5.8.7.3 Time between starts
SETTINGS  CONTROL ELEMENTS  START SUPERVISION  TIME BETWEEN STARTS
 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
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
should not be restarted until the lockout time elapses.
The
TIME-BTWN-STARTS OP
Use this operand to inhibit the start command.
The
TIME-BTWN-STARTS DPO
stopped, the motor can be restarted immediately.
5-242
operand indicates that the maximum permitted starting rate has been reached. When
operand indicates that the motor stopped when the maximum permitted starting rate was
operand indicates that the maximum permitted starting rate has not been reached. When
Figure 5-136: Maximum starting rate logic
SETTINGS
STARTS/HR TIME INTERVAL:
STARTS/HR MAX NUMBER OF STARTS:
RUN
STARTS/HR TIME INTERVAL
SETTINGS
TIME BETWEEN STARTS
FUNCTION: Disabled
TIME BETWEEN STARTS
MIN TIME: 20 min
TIME BWN STARTS BLK:
Off
TIME BETWEEN STARTS
TARGET: Self-Reset
TIME BETWEEN STARTS EVENTS:
Disabled
setting expires before a subsequent start attempt is allowed. The time
operand indicates that the time since the last start was too short. When stopped, the motor
operand indicates that the motor stopped when the time since the last start was too short.
operand indicates that the time between the last two starts was long enough. When
SETTINGS
FLEXLOGIC OPERANDS
STARTS-PER-HOUR PKP
LAST
STARTS-PER-HOUR DPO
STARTS-PER-HOUR OP
PKP
OP
DPO
STARTS/HR LOCKOUT
LOCKOUT TIME
Range: Disabled, Enabled
Range: 0 to 300 min. in steps of 1
Range: FlexLogic operand
Range: Self-Reset, Latched, Disabled
Range: Disabled, Enabled
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
ACTUAL VALUE
833015A2.CDR

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