TECO-Westinghouse F510 Series, Instruction Manual, Page: 236 / 444

4 - 164
08-22 (detection time)
Output
Frequency
T
dec1
(00-15)
T
dec2
(00-17)
t
2%
(Hysteresis)
08-03
Inverter
Output Current
Load
t
t
Figure 4.3.60 Stall prevention selection in operation
08- 05
Selection for Motor Overload Protection (OL1)
Range
【
xxx0b
】：
Motor Overload Protection is disabled.
【
xxx1b
】：
Motor Overload Protection is enabled.
【
xx0xb
】：
Cold Start of Motor Overload
【
xx1xb
】：
Hot Start of Motor Overload
【
x0xxb
】：
Standard Motor
【
x1xxb
】：
Special motor
【
0xxxb
】：
Reserved
【
1xxxb
】：
Reserved
08-07
Motor Overload (OL1) Protection Level
Range
【
0
】：
Motor Overload (OL1) Protection 0
【
1
】：
Motor Overload (OL1) Protection 1
【
2
】：
Motor Overload (OL1) Protection 2
The motor overload protection function estimates the motor overload level based on the output current,
output frequency, motor characteristics and time. The motor overload trip time depends on the motor rated
current when the output frequency is higher than 60Hz.
On inverter power-up the motor overload protection internal thermal accumulation register is automatically
reset.
To use the built-in motor overload protection function parameter 02-01 (motor rated current) has to match
the motor rated current on the motor nameplate.
Turn off the motor overload protection when using two or more motors connected to the inverter (set 08-05
= xxx0b), and provide external overload protection for each motor (e.g. thermal overload switch).
With cold start enabled (08-05 = xx0xb), motor overload protection occurs in 5 and a half minutes when
operating the motor at 150% of the motor rated current at an output frequency greater than 60Hz.