Appendix
A-7
V/f control
(constant
torque)
V/f control
(variable
torque)
Speed sensor-
less vector
control
Vector control
with speed
sensor
PM motor
control
Control
Meter output
0 to 10VDC, 1mA (programmable) : 2 points
Change between output frequency, output voltage, output current, DC voltage, etc.
Preventive Overcurrent limit (drive regeneration limit variable), overvoltage limit, overload warning
contact
Shut-off Overcurrent, overvoltage, undervoltage, IGBT fault, overload, temperature rise, ground
fault, other self-diagnosis
Fault history Past four faults are saved.
Saved details: Primary cause, secondary cause, output current and output frequency
before shut-off.
Overload withstand
level
150% for 1 minute, 170% for 2.5 seconds (50% of left values for 3Hz and less)
Inverse time characteristics (variable torque)
120% for 1 minute, 125% for 1 seconds (75% of left value for 3Hz and less)
Inverse time characteristics (variable torque)
Protection
Retry Randomly set between 0 and 10 times
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