EQ7 Series Instruction Manual - TECO-Westinghouse Motor Company
EQ7 Series Instruction Manual - TECO-Westinghouse Motor Company
EQ7 Series Instruction Manual - TECO-Westinghouse Motor Company
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• Allowable average loss (F51)<br />
The allowable average loss refers to a tolerance for motor continuous operation, which is obtained based on<br />
the %ED (%) and motor rated capacity (HP).<br />
Data for F51<br />
0.001 to 99.99 0.001 to 99.99 (kW)<br />
Function<br />
During deceleration:<br />
Allowable average loss (kW) =<br />
%ED(%) ÷ 100 x <strong>Motor</strong> rated capacity (HP) x 0.75<br />
2<br />
Equation (3)<br />
During constant speed operation:<br />
Allowable average loss (kW) =<br />
• Resistance (F52)<br />
F52 specifies the resistance of the braking resistor.<br />
%ED(%) ÷ 100 x <strong>Motor</strong> rated capacity (HP) x 0.75<br />
2<br />
Equation (4)<br />
F80<br />
Switching between LD, MD and HD drive modes<br />
F80 specifies whether to drive the inverter in the low duty (LD), medium duty (MD), or high duty (HD) mode as<br />
described below.<br />
To change the F80 data, it is necessary to press the" + keys" or " + keys" (simultaneously keying).<br />
F80<br />
data<br />
1<br />
Drive mode Application Continuous rated current level<br />
LD (Variable<br />
Torque) mode<br />
Light load<br />
Drive a motor whose capacity is the<br />
same as the inverter's one.<br />
Overload<br />
capability<br />
Maximum<br />
frequency<br />
120% for 1 min. 120 Hz<br />
2<br />
MD (Constant<br />
Torque) mode<br />
Medium load<br />
Drives a motor whose capacity is the<br />
same as the inverter's one or derates<br />
a motor one rank lower than the<br />
inverter's capacity.<br />
150% for 1 min. 120 Hz<br />
0<br />
HD (CT-Vector)<br />
mode<br />
Heavy load<br />
Derates a motor one or two ranks<br />
lower than the inverter's capacity.<br />
150% for 1 min.<br />
200% for 3 s<br />
500 Hz<br />
Switching to the MD/HD mode increases the overload capability (%) against the continuous current level up to<br />
150%, but it requires derating the motor one or two ranks lower than the inverter's capacity.<br />
Note: For 7.5 HP or smaller, when LD mode is selected, the HD mode specification applies.<br />
For the rated current level, see Chapter 11 "SPECIFICATIONS."<br />
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