YASKAWA Varispeed G7 Instruction Manual page 264

Multi-Function Outputs (H2-01 to H2-05)
Set-
ting
Value
Motor overload (OL1, including OH3) pre-alarm (ON: 90% or more of the detection
1F
level)
Setting Motor Rated Current
Set the rated current value on the motor nameplate in constants E2-01 (for motor 1) and E4-01 (for motor 2).
This set value is the electronic thermal base current.
Setting Motor Overload Protection Characteristics
Set the overload protection function in L1-01 according to the applicable motor.
The induction motor's cooling abilities differ according to the speed control range. Consequently, you must
select the electronic thermal protection characteristics to match the applicable motor's tolerance load charac-
teristics.
The following table shows the motor type and tolerance load characteristics.
L1-01
Set
Value
1
2
-58
6
Motor Type Tolerance Load Characteristics
Short time 60 s.
General-purpose
motor (standard
motor)
Continuous
Rotation speed (%)
Short time 60
Inverter motor
(constant torque)
(1:10)
Continuous
Function
Cooling Ability
Rated rotation speed
= 100% speed
Use this motor for
operations using a
commercial power
supply. This motor
construction yields
Frame best cooling effect
number
Max.
when operating at 50/
Frame number Max. speed
speed
of 160 MJ to 160 LJ min.
of 200
60 Hz.
LJ min.
Frame number Max.
speed of 132 MJ
Rated rotation speed
= 100% speed
This motor yields a
cooling effect even
when operating at
low speeds (approx.
Frame number Max.
6 Hz).
speed of 200 LJ min.
Frame number Max. speed
of 160 MJ to 180 LJ
Frame number Max.
speed of 132 MJ
Rotation speed (%)
Control Methods
Open Open
V/f Loop Flux Loop
V/f with Vec- Vec- Vec-
PG tor tor tor
1 2
Yes Yes Yes Yes Yes
Electronic Thermal
Operation (at 100%
Motor Load)
When operating continu-
ously at 50/60 Hz or less,
motor overload detection
(OL1) is detected. The
Inverter outputs the error
contact, and the motor
coasts to a stop.
Operates continuously at 6
to 50/60 Hz.