Overload Tolerance Cooling Ability Overload Characteristics
A: Max. speed for 200LJ and above
B: Max. speed for 160MJ to 180 LJ
C: Max. speed for 132MJ and below
150
100
90
50
0
1
100
120
167
200
A
B
C
Continuous
Speed (%)
Rated Speed=100% Speed
Torque (%)
60 s
Motor is designed to effectively cool
itself at speeds near 0.6 Hz.
Continuous operation with 100% load
from 0.6 Hz to E1-06, Motor Base
Frequency.
Continuous operation below 0.6 Hz
may cause an oL1 or oL2 fault.
Setting 4: PM Derated Torque Motor
Use this
setting when operating a PM motor. PM motors for derated torque have a self-cooling design and the overload tolerance
drops as the motor slows. Electronic thermal overload is triggered in accordance with the motor overload characteristics,
providing overheat protection across the entire speed range.
Overload Tolerance Cooling Ability Overload Characteristics
Motor Speed (%)
150
60 s
130
100
67
50
0
0 10 100 150
80
85
33
Torque (%)
Continuous
Motor is designed to produce 100%
torque at base speed. Built with
effective cooling capabilities.
Reaching 100% when operating at
below the base frequency causes a
motor overload fault (oL1). The drive
fault output closes and the motor coasts
to stop.
Setting 5: Constant Torque PM Motors (Constant Torque Range of 1:1500)
Sets necessary
protection characteristics when driving a PM with constant torque. Running the motor below 0.07% speed with
100% load will trigger an overload fault.
Overload Tolerance Cooling Ability Overload Characteristics
Percent of base speed (%)
0 0.07 100 130 150
150
100
115
77
67
Instantaneous rating (60 s)
125
83
120
Continuous
Torque (%)
Motor is designed to effectively cool
itself at speeds near 0.07% of base
speed.
Continuous operation with 100% load
from 0.07% to 100% of base speed.
Setting 6: General-purpose Motor
Note: General-purpose motors are designed with a base speed that operates at line frequency (50/60 Hz depending on geographic region).
Because the motor is self-cooled, the overload tolerance drops when the motor speed is lowered. The drive appropriately
adjusts the electrothermal trigger point according to the motor overload characteristics and protects the motor from overheat
throughout the entire speed range.
i.5 Start-Up Programming and Operation
78
YASKAWA ELECTRIC TOEP C710636 04D U1000 Industrial MATRIX Drive Quick Start Guide
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