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Coolmay Variable Frequency Inverter
Coolmay Variable Frequency Inverter
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I/O: 12DI/12DO
Coolmay Variable Frequency Inverter 

ModelCM520- 0.75/1.5KWCM540- 0.75/1.5/4.0KWCM540- 5.5/7.5/11KW
Basic Function
Maximum frequencyVector control: 0.00~500.00Hz
V/F control: 0.00~500.00Hz
Carrier frequency0.8kHz~12kHz. The carrier frequency automatically adjusted based on the load features.
Input frequency resolutionDigital setting: 0.01Hz
Analog setting: Maximum frequency ×0.025%
Control modeOpen-loop vector control (SVC), Closed-loop vector control  (FVC), VF control.
Startup torqueG type: 0.25Hz/150% (SVC), 0Hz/180%(FVC), P type: 0.5Hz/100%
Speed range1:200(SVC), 1:1000(FVC)
Speed stability accuracy±0.5%(SVC), ±0.02%(FVC)
Torque control precision±5%(SVC)(above 10Hz), ±3%(FVC)
Overload capacityG type: 150% rated current 60s. 180% rated current 3s.
P type: 120% rated current 60s. 150% rated current 3s.
Torque boostAutomatic torque boost. Manual torque boost 0.1%~30.0%
V/F curveFive modes: Straight-line, Multi-points, Square V/F, V/F separation, V/F Semi-separation
V/F SeparationTwo modes: complete separation, semi-separation
Ramp modeStraight-line ramp and S-curve ramp.  
Four kinds of acceleration/deceleration time with the range of 0.0–6500.0s
DC injection brakingDC braking frequency: 0.00Hz~maximum, braking time: 0.0s~36.0s.
Braking action current value:0.0%~100.0%
Jog controlJog frequency: 0.00Hz~50.00Hz
Jog acceleration and deceleration tome:0.0s~6500.0s
Simple PLC, multistage speed operationIt implements up to 16 speeds via the simple PLC function or combination of DI terminal states.
Built-in PIDIt can keep constant output voltage automatically when the mains voltage changes.
Automatic voltage regulation(AVR)Automatically maintain a constant output voltage when grid voltage changes.
Over voltage/Over current loss of speed controlAutomatic limit of the current and voltage during the operation, prevent frequent over current and over voltage
Rapid current limitMinimizing over-current fault and protect the normal operation of converter.
Torque limit and control"Excavator" characteristics, automatic limit of the torque during the operation, to prevent frequent over-current trip. Closed-loop vector mode torque control can be achieved.
Other models: CM540-15/ 18.5/ 22KW, CM540- 30/ 37KW
CM540-45/ 55/ 75KW, CM540-90/ 110KW
CM540-132/ 160/ 185KW, CM540- 200/ 220/ 250/ 280KW
CM540-315/ 350KW.
The above models are all iron shells. For detailed dimensions, please contact us
Detail info refer to:
Coolmay CM520 VFD user manual Coolmay CM540-Inverter user manual
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