YASKAWA Varispeed V7 Instruction Manual page 174

Example for 200 V-Class Motors
Cooling Effect
Effective when
operated at 50/
60 Hz from com-
ercial power
supply.
(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.
Effective even
when operated
at low speed
(approx. 6 Hz)
(V/f for 60-Hz, 220-V Input Voltage)
Use an Inverter motor for continu-
ous operation at low speed.
Torque Characteristics
60 S
Short-Term
Torque
(%)
Operation frequency (Hz)
Base Frequency 60 Hz
60 S
Short-term
Continuous
Torque
rating
(%)
Operation frequency (Hz)
Base Frequency 60 Hz
7. Programming Features
Electronic Ther-
mal Overload
An
(motor overload
protection) oc-
curs when contin-
Continuous
uously operated
rating
at 50/60 Hz or
less at 100%
load.
Electronic ther-
mal overload pro-
tection is not
activated even for
continous opera-
tion at 50/60 Hz
or less at a 100%
load.
error
173