YASKAWA LA700 Series, Инструкция по установке и эксплуатации, Страница: 356 / 378

10 Attachment
356 YASKAWA TOMPYEULA7002A LA700 Series Installation and Operation Instruction
Set H2-01 = 1F [Term M1-M2 Function Selection = Motor Overload Alarm (oL1)] to set a motor overload alarm.
If the motor overload level is more than 90% of the oL1 detection level, the output terminal activates and triggers
an overload alarm.
0 : Disabled
1 : Variable Torque
Use this setting for general-purpose motors with a 60 Hz base frequency.
The overload tolerance decreases as motor speed decreases because the cooling fan speed decreases and the ability
of the motor to cool decreases in the low speed range.
The overload tolerance characteristics of the motor change the trigger point for the electronic thermal protector.
This provides motor overheat protection from low speed to high speed across the full speed range.
Load Tolerance Cooling Capability
Overload Characteristics
(at 100% motor load)
This motor is designed to operate with commercial line
power. Operate at a 60 Hz base frequency to maximize
the motor cooling ability. 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.
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 Cooling Capability
Overload Characteristics
(at 100% motor load)
This motor is designed to withstand increased
temperatures during continuous operation in the low
speed range (10% base frequency). The motor operates continuously at 10% to 100% base
frequency. Operating slower than 10% speed at 100%
load will cause motor overload.
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.