2.4 Technical Speciîš¿cations
Table 2-2 MD320 Inverter Technical Speciîš¿cations
Item Speciîš¿cations
Individualized
function
Maximum
frequency
300Hz
Carrier
frequency
0.5k to 16kHz; the carrier frequency will be automatically
adjusted according to the load characteristics.
Input frequency
resolution
Digital setting: 0.01Hz
Analog setting: maximum frequency ×0.1%
Control mode
Open loop vector control (SVC)
Close loop vector control (VC)
V/F control
Startup torque
G model: 0.5Hz/150% (SVC); Hz/180%(VC)
P model: 0.5Hz/100%
Speed
adjustment
range
1
：
100
（
SVC
）
1
：
1000
（
VC
）
Speed
stabilization
precision
±0.5%
（
SVC
）
±0.02%
（
VC
）
Torque control
precision
±5%
（
VC
）
Overload
capacity
G model: 150% rated current 60s; 180% rated current 1s.
P model: 120% rated current 60s; 150% rated current 1s.
Torque hoist Automatic torque hoist; manual torque hoist 0.1% to 30.0%
V/F curve Three types: straight line, multiple point and square type
Speed-up and
Speed-down
curve
Straight line or S curve speed-up and speed-down mode;
four kinds of speed-up and speed-down time; speed-up and
speed-down time ranges between 0.0s to 3000.0s.
DC brake
DC brake frequency: 0.00Hz to maximum frequency; brake
time: 0.0s to 36.0s, and brake current value: 0.0% to 100.0%.
Jog control
Jog frequency range: 0.00Hz to 50.00Hz; jog acceleration/
deceleration time: 0.0s to 3000.0s.
Simple PLC
and MS Speed
Running
It can realize a maximum of 16 segments speed running via
the built-in PLC or control terminal.
Built-in PID
It is easy to realize process-controlled close loop control
system.
Auto voltage
regulation
(AVR)
It can keep constant output voltage automatically in case of
change of mains voltage.
Torque limit and
control
It can limit the torque automatically and prevent frequent
over current tripping during the running process; the close
loop vector mode can implement torque control.
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