YASKAWA GA800 Technical Reference page 296

5.3 UL Standards
Load Tolerance
2 : Constant Torque 10:1 Speed Range
Use this setting for drive-dedicated motors with a speed range for constant torque of 1:10.
The speed control for this motor is 10% to 100% when at 100% load. Operating slower than 10% speed at 100% load
will cause motor overload.
Load Tolerance
3 : Constant Torque 100:1 SpeedRange
Use this setting for vector motors with a speed range for constant torque of 1:100.
The speed control for this motor is 1% to 100% when at 100% load. Operating slower than 1% speed at 100% load
will cause motor overload.
Load Tolerance
4 : PM Variable Torque
Use this setting for PM motors with derated torque characteristics.
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Cooling Capability
This motor is designed to operate with commercial line
power. Operate at a 60 Hz base frequency to maximize the
motor cooling ability.
Cooling Capability
This motor is designed to withstand increased temperatures
during continuous operation in the low speed range (10%
base frequency).
Cooling Capability
This motor is designed to withstand increased temperatures
during continuous operation in the low speed range (1%
base frequency).
Overload Characteristics
(at 100% motor load)
If the motor operates at frequencies less than 60 Hz, the
drive will detect oL1. The drive triggers a fault relay output
and the motor coasts to stop.
Overload Characteristics
(at 100% motor load)
The motor operates continuously at 10% to 100% base
frequency. Operating slower than 10% speed at 100% load
will cause motor overload.
Overload Characteristics
(at 100% motor load)
The motor operates continuously at 1% to 100% base
frequency. Operating slower than 1% speed at 100% load
will cause motor overload.
YASKAWA SIEPC71061737D GA800 Drive Technical Reference