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JKSSS+ Series
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When the motor reaches full speed, the "AUX4" LED (At Speed) will be lit.
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The POWER, RUN, AUX3 LEDs will be lit, indicating that the contact has
energized. IA, IB, IC will display the current setting for Phase A, Phase B,
and Phase C and the G/F indicates ground fault. (Display 4)
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If the motor decelerates, or stops, during the acceleration period, hit the
stop button immediately and open the disconnect line. If the unit does not
follow this operational sequence, please refer to the Troubleshooting Chapter.
It is best to operate the motor at its full load starting condition to achieve the proper
time, torque and ramp settings. Initial settings are set to accommodate most motor
conditions. TRy INITIAL SETTINGS FIRST. See Section 5.1.1 (Setpoint Page 2) to
make any adjustments.
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Initial Voltage
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Soft Start Curve
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Current Limit
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Acceleration Time
If decel is enabled, the following parameters for Deceleration Time, Start Decel Volt-
age (see SP2) and Stop Decel Voltage (see SP2) must also be programmed.
3.6 Emergency Bypass Operation
DANGER
!
HAZARDOUS OPERATION
Do not operate the Bypass Contactor with medium
voltage power applied to the unit.
Failure to follow this instruction will cause the motor
to start unexpectedly.
Remove input power (using line start section and lock out disconnect).
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Close the emergency bypass contact.
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Re-close the disconnect on line start panel.
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If integral overload protection is not to be used (see JP-1 Motor Protection
Jumper), then bimetallic or solid state overload protection is required
(customer supplied if factory emergency overload protection option has not
been included.)
IN THE EMERGENCy ByPASS MODE, THERE IS NO
OVERLOAD PROTECTION UNLESS A SEPARATE
WARNING
(OPTIONAL OR CUSTOMER SUPPLIED) THERMAL OR SOLID
STATE OVERLOAD RELAy IS INSTALLED, OR jP-1 (MOTOR
PROTECTION jUMPER) IS REMOVED FROM THE TCB BOARD.
The line start panel is operable as a normal across-the-line starter. When
power is applied, the bypass contactor is energized, tying the input terminals
directly to its output terminals. When the "ON/OFF" contact is closed, the
main contactor is energized and the motor line starts. When the "ON/OFF"
contact is opened, the motor is disconnected from the line via the main in-line
vacuum contactor.
JKSSS+ Series - 32
2.3 - 4.2KV
MOTOR STOPPED
Display 1
READY TO START
MOTOR STARTING
Display 2
00 X FLA
OVERLOAD ALARM
Display 3
TIME TO TRIP: XXX SECS.
IA: _ _ _ IB: _ _ _
Display 4
IC: _ _ _ G/F: _ _ _
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