SHENZHEN ENCOM ELECTRIC TECHNOLOGIES CO. enc eds800-2s0002n User Manual page 62

freq. Hz
f
max
f
s
starting
freq.
starting
time
t
1
Fig.6-6 starting freq. and starting time
Starting frequency is not limited by low limit frequency.
note
F1.03 Zero freq. DC braking volt.
F1.04 Zero freq. DC braking time
Zero Freq. DC braking is special function for FKM (Flat Knitting Machine).
Specific function is: the inverter enters into braking status automatically during
running when running frequency is lower than F3.29 (Zero Freq. Braking
frequency), and realizes continuance of current phase intelligently, fast and smooth
orientation for motor's rotor. The inverter will stop braking automatically and
switch into running if specified frequency increased or reverse running instruction
provided in the braking, Curve figure as Fig6-7:
. I is zero Freq. braking current, to set according to actual braking torque by
⑴
B
setting F1.03.
⑵. BR is specified zero Freq. braking signal point, inverter enters into zero Freq.
braking status automatically after 1/4 F1.04.
⑶. F'is any time in braking. When specified frequency increased or reverse
running instruction provided, the inverter will end zero Freq. braking and enter
into running status. But the inverter is still in running status and waits for
frequency raising instruction.
⑷. After F1.04, the inverter stops output and the motor is in zero Freq. running
status if there is neither frequency raising instruction nor reverse instruction.
EDS800 series Service Manual
I
I
B
0
time
Fig.6-7 Zero freq. DC braking Volt. And Time
Range：0－15(％)
Range：0.0－20.0s
57
BR
1/4 F1.04
running
F'
F1.04
0(％)
0.0s
F