Machine Protection
6-61
Multi-Function Outputs (H2-01 to H2-03)
îš„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.
îš„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.
Set-
ting
Value
Function
Control Methods
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
1F
Motor overload (OL1, including OH3) pre-alarm (ON: 90% or more of the detection
level)
Yes Yes Yes Ye s
L1-01
Set
Value
Motor Type Tolerance Load Characteristics Cooling Ability
Electronic Thermal
Operation (at 100%
Motor Load)
1
General-purpose
motor (standard
motor)
Use this motor for
operations using a
commercial power
supply. This motor
construction yields
best cooling effect
when operating at 50/
60 Hz.
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.
2
Inverter motor
(constant torque)
(1:10)
This motor yields a
cooling effect even
when operating at
low speeds (approx.
6Hz).
Operates continuously at 6
to 50/60 Hz.
Short time 60 s.
Rated rotation speed
= 100% speed
Torque (%)
Continuous
Frame
number
Max.
speed
of 200
LJ min.
Frame number Max. speed
of 160 MJ to 160 LJ min.
Frame number Max.
speed of 132 MJ
Rotation speed (%)
Short time 60
Torque (%)
Rated rotation speed
= 100% speed
Continuous
Frame number Max.
speed of 200 LJ min.
Frame number Max. speed
of 160 MJ to 180 LJ
Frame number Max.
speed of 132 MJ
Rotation speed (%)
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