EMHEATER Variable Frequency Drives 220V 380V 480V
Standard functions
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l Maximum frequency: Vector control: 0~300 Hz; V/F control: 0~3000 Hz
l Carrier frequency: 0.5–16 kHz (automatically adjusted based on the load features.)
l Input frequency resolution: Digital setting: 0.01 Hz; Analog setting: maximum frequency x 0.025%.
l Control mode: Sensor-less vector control (SFVC); Closed-loop vector control (CLVC); Voltage/Frequency (V/F) control
l Startup torque: G type: 0.5 Hz/150% (SFVC); 0 Hz/180% (CLVC); P: 0.5Hz/100%;
l Speed range: 1:100 (SFVC); 1:1000(CLVC)
l Speed stability accuracy: ± 0.5% (SFVC); ± 0.02% (CLVC)
l Torque control accuracy: ± 10% (SFVC); ± 5% (CLVC)
l Overload capacity:
G type: 60s for 150% of the rated current, 3s for 180% of the rated current;
P type: 60s for 120% of the rated current, 3s for 150% of the rated current
l Torque boost: Auto boost; Manual boost 0.1%~30.0%.
l V/F separation: Two types: complete separation; half separation.
l DC braking: DC braking frequency: 0.00 Hz ~ maximum frequency; Braking time: 0.0s~36.0s; Braking trigger current value: 0.0%~100.0%.
l Built-in simple PLC, multiple speeds: It realizes up to 16 speeds via the simple PLC function or combination of DI terminal states.
l Built-in PID: It realizes closed loop control system easily.
l Auto voltage regulation (AVR): It can keep constant output voltage automatically when the mains voltage fluctuation.
l Overvoltage/ Over current stall control: The current and voltage are limited automatically during the running process so as to avoid frequently tripping due to overvoltage / over current.
l Rapid current limit function: It can auto limit running current of frequency inverter to avoid frequently tripping.
l Torque limit and control: (Excavator characteristics) It can limit the torque automatically and prevent frequently over current tripping during the running process. Torque control can be implemented in the VC mode.
Display and keypad operation
l LED display: It displays the parameters.
l LCD display: It is optional, supports panel display in Chinese or English language.
l Parameters copy: Optional LCD keypad can copy parameters.
l Key locking and function selection: It can lock the keys partially or completely and define the function range of some keys so as to prevent misoperation.
l Protection mode: Motor short-circuit detection at power-on, input/output phase loss protection, over current protection, overvoltage protection, less voltage protection, overheat protection and overload protection,etc.
Environment
l Installation location: Indoor, no direct sunlight, dust, corrosive gas, combustible gas, oil smoke, vapour, drip or salt.
l Altitude: Lower than 1000 m.
l Ambient temperature: -10°C~ +40°C (de-rated if the ambient temperature is between 40°C and 50°C)
l Humidity: Less than 95%RH, without condensing.
l Vibration: Less than 5.9 m/s2 (0.6 g)
l Storage temperature: -20°C ~ +60°C
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