GE M60 UR Series

GE Multilin M60 Motor Protection System 5-229
5 SETTINGS 5.7 CONTROL ELEMENTS
5
c) TIME BETWEEN STARTS
PATH: 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 spec-
ified 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 the motor stopped when the time since the last start was too short. This
operand should be used to inhibit the start command.
•The TIME-BTWN-STARTS DPO operand indicates that the time between last two starts was long enough. When stopped,
the motor could 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 5–115: TIME BETWEEN STARTS SCHEME LOGIC
 TIME BETWEEN
 STARTS
TIME BETWEEN STARTS
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
TIME BETWEEN STARTS
MIN TIME: 20 min
Range: 0 to 300 min. in steps of 1
MESSAGE
TIME BWN STARTS BLK:
Off
Range: FlexLogic operand
MESSAGE
TIME BETWEEN STARTS
TARGET: Self-Reset
Range: Self-Reset, Latched, Disabled
MESSAGE
TIME BETWEEN STARTS
EVENTS: Disabled
Range: Disabled, Enabled
833016A2.CDR
TIME BWN STARTS BLK:
Off
FLEXLOGIC OPERANDS
TIME-BTWN-STARTS PKP
TIME BETWEEN STARTS
FUNCTION:
SETTINGS
Enabled = 1
MOTOR STARTING
FLEXLOGIC OPERAND
TIME-BTWN-STARTS DPO
TIME-BTWN-STARTS OP
ACTUAL VALUE
BTWN STARTS LOCKOUT
SETTING
TIME BETWEEN STARTS
MIN TIME:
0
t
RST
AND
AND
MOTOR OFFLINE
SETTINGS / SYSTEM
SETUP / MOTOR /
EMERGENCY RESTART:
Off
SETTINGS
reset from
lockout