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Closed-loop Motor A5
101
ROTOR LEAKAGE X
(Rotor Leakage Reactance)
This parameter sets the rotor reactance leakage,
as a percent of the BASE IMPEDANCE (D2),
which appears in the Power Data display.
NOTE: The base impedance is based on the
RATED MTR PWR (A5) and RATED MTR
VOLTS (A5) parameters.
STATOR RESIST
(Stator Resistance)
This parameter sets the amount of resistance in
the motor stator, as a percent of the BASE
IMPEDANCE (D2), which appears in the Power
Data display.
NOTE: The base impedance is based on the
RATED MTR PWR (A5) and RATED MTR
VOLTS (A5) parameters.
MOTOR IRON LOSS
(Motor Iron Loss)
This parameter sets the motor iron loss at rated
frequency.
MOTOR MECH LOSS
(Motor Mechanical Losses)
This parameter sets the motor mechanical
losses at rated frequency.
OVLD START LEVEL
(Motor Overload Start Level)
This parameter defines maximum current at
which motor can run continuously. This
parameter is also one of the two parameters that
define the motor overload curve.
The motor overload parameters can be adjusted
by the user. The following two parameters are
used to define the motor overload curve.
•
motor current overload start level (OVLD
START LEVEL(A5)) parameter
•
motor current time out (OVLD TIME
OUT(A5)) parameter
Three overload curves are shown. Curve #1 is
the default motor overload curve. The
parameter settings that define the three overload
curves are shown.
OVLD
START
LEVEL
OVLD
TIME
OUT
curve #1
110%
60 sec
curve #2
110%
40 sec
curve #3
120%
70 sec
Motor Overload Parameters
When the motor had exceeded the user defined
motor overload curve, the drive will declare an
motor overload alarm.
The motor overload alarm can also be assigned
to a logic output.
Under the POWER DATA display sub-menu,
The MOTOR OVERLOAD (D2) value displays
the percentage of motor overload trip level
reached. Once this value reaches 100% the
motor has exceeded its user defined overload
curve and a motor overload alarm is declared by
the drive.
The drive will only declare a motor overload and
the user is responsible for action.
But, if the user wants the drive to declare a fault
on a motor overload the following need to be
completed:
•
logic output configured to MTR OVERLOAD
•
logic input configured to EXT FAULT
•
wire the EXT FAULT logic input terminal to
the to MTR OVERLOAD logic output
terminal
•
wire the logic input common terminal to the
logic output common
With the above set-up, the drive will then declare
an External Fault on a motor overload.
RUN/FAULT
SUB MENU
DATA ENT
HPV OPERATOR
MOTOR OVERLOAD
D2 100 %
RUN/FAULT
SUB MENU
DATA ENT
HPV OPERATOR
ALARM!
MTR OVERLOAD