108
Example for 200 V-Class Motors
Cooling Effect Torque Characteristics Electronic
Thermal Over-
load
Effective when
operated at
50/60 Hz from
commercial
power supply
Base Frequency 60 Hz
(V/f for 60-Hz, 220-V Input Voltage)
For low-speed operation, torque
must be limited in order to stop mo-
tor temperature rise.
An er-
ror (motor over-
load protection)
occurs when
continuously
operated at 50/
60 Hz or less at
100% load.
Effective even
when operat-
ed at low
speed
(approx. 6 Hz)
Base Frequency 60 Hz
(V/f for 60-Hz, 220-V Input Voltage)
Use an Inverter motor for continuous
operation at low speed.
Electronic ther-
mal overload
protection is
not activated
even for conti-
nous operation
at 50/60 Hz or
less at a 100%
load.
General-purpose Motor
Torque
(%)
60 s
Short-term
Continuous
rating
Operation Frequency (Hz)
Inverter Motor
Torque
(%)
60 s
Short-term
Continuous
rating
Operation Frequency (Hz)
To Next Page
Loading...
