KE300A-08 special inverter for instantaneous stop and non-stop, with DC bus voltage as its core control principle, using this high-performance control algorithm to maximize the utilization efficiency of DC bus voltage. After comprehensive analysis process according to the measured value of the DC bus voltage, automatically adjust the driver output state to establish a reasonable load feedback energy distribution relationships, which can maintain the drive controller without power off for 4 to 9 seconds. When the drive is completely powered off and there is no display, the power grid can automatically restart after power supply. The driver does not report a fault during the entire instantaneous power failure.
(1) DSP high-speed control core
The control core adopts the high-speed digital processor DSP produced by TI (Texas Instruments). Ensure the system has strong performance with high speed and stability features. It can completely deal with the most complex control operations.
(2) New No PG vector control technology
No PG vector control can block the motion, the rated torque can up to 150% when it is 0.5Hz ; It can help to reduce the sensitivity to motor parameters and improve the adaptability at the site. It also can be applied to winding control, That's a perfect solution for multiple motors drag the same load.
(3) Characteristics of "excavator"
(4) Fast dynamic response
The dynamic response time under PG vector control is less than 20ms.
(5) Fast current limiting function
(6) Accurate parameter identification ability
(7) High torque control accuracy
0～rated input voltage
V/f control: 0~3000HzSensorless vector control: 0~300Hz
Operation command mode
Keypad controlTerminal controlSerial communication control
Frequency setting mode
Digital setting, analog setting, pulse frequency setting, serial communication setting, multi-step speed setting & simple PLC, PID setting, etc. These frequency settings can be combined & switched in various modes.
G model: 150% 60s, 180% 10s, 200% 3s P model: 120% 60s, 150% 10s, 180% 3s
0.5Hz/150% (SVC); 1Hz/150% (V/f)
Speed adjustment range
1:100 (SVC), 1:50 (V/f)
1.0-16.0kHz，automatically adjusted according to temperature and load characteristics
Digital setting: 0.01HzAnalog setting: maximum frequency * 0.05%
Automatically torque boost; manually torque boost: 0.1%~30.0%
Three types: linear, multiple point and square type (1.2 power, 1.4 power, 1.6 power, 1.8 power, square)
Acceleration/decele ration mode
Straight line/S curve; four kinds of acceleration/deceleration time, range: 0.1s~3600.0s
DC braking when starting and stoppingDC braking frequency: 0.0Hz~maximum frequency, braking time: 0.0s~100.0s
Jog operation frequency: 0.0Hz~maximum frequencyJog acceleration/deceleration time: 0.1s~3600.0s
Simple PLC & multi-step speed operation
It can realize a maximum of 16 segments speed running via the built-in PLC or control terminal.
Built-in PID control to easily realize the close loop control of the process parameters (such as pressure, temperature, flow, etc.)
Automatic voltage regulation
Keep output voltage constant automatically when input voltage fluctuating
Common DC bus
Common DC bus for several inverters, energy balanced automatically
Torque control without PG
“Rooter” characteristics, limit the torque automatically and prevent frequent over-current tripping during the running process
Wobble frequency control
Multiple triangular-wave frequency control, special for textile
Timing/length/counting control function
Over-voltage & over-current stall control
Limit current & voltage automatically during the running process, prevent frequent over-current & over-voltage tripping
Fault protection function
Up to 30 fault protections including over-current, over-voltage, under-voltage, overheating, default phase, overload, shortcut, etc., can record the detailed running status during failure & has fault automatic reset function
Programmable DI: 7 on-off inputs, 1 high-speed pulse input 2 programmable AI: AI1: 0～10V or 0/4～20mA A12: 0～10V or 0/4～20mA
1 programmable open collector output: 1 analog output (open collector output or high-speed pulse output) 2 relay output 2 analog output: 0/4~20mA or 0~10V
Offer RS485 communication interface, support MODBUS-RTU communication protocol
Human machine interface
Display frequency setting, output frequency, output voltage, output current, etc.
QUICK/JOG key, can be used as multifunction key
-10℃～40℃, derated 4% when the temperature rise by every 1℃(40℃～50℃).
90%RH or less (non-condensing)
≤1000M: output rated power, ＞1000M: output derated
Indoor, no direct sunlight, dust, corrosive gas, flammable gas, oil mist, steam, dripping water, salt, vibration
Rated Input Amperage（A）
Rated output Amperage（A）
3AC 380V -15%~15%
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