Q18S AC Frequency Inverter built in MPPT Charge Controlle

Q18S series solar water pump converter is a special frequency converter developed for solar water pump. According to the requirements of equipment occasions,

special functions and special production processes are customized to make this product is more suitable for this occasion.

The product is directly powered by solar panels, with built-in MPPT solar monitoring, water level monitoring, and automatic water shortage monitoring.

  Type Output Power Rated Output Current  Installation Dimension(mm)
W H D W1 H1 D1 Mounting holes
Single Phase 220v Q18S-2S0007H 0.75KW 4.5A 80 155 130 69.3 143 38.5 4
Q18S-2S0015H 1.5KW 7.0A
Q18S-2S0022H 2.2KW 10A 118 185 165 105 173 60
Q18S-2S0040H 3.7KW 16A 130 220 181 116 208 60 5
Q18S-4T0040H 3.7KW 8.2A
Three Phase 380v Q18S-4T0055H 5.5KW 12.5A
Q18S-4T0075H 7.5KW 18A
Q18S-4T0110H 11.0KW 24A 208 322 192 190 306 112 7
Q18S-4T0150H 15.0KW 33A
Q18S-4T0180H 18.5KW 38A
Q18S-4T0220H 22.0KW 45A 220 380 190 185 404 138 7
Q18S-4T0300H 30.0KW 60A
Q18S-4T0370H 37.0KW 80A 256 430 202 196 450 153 10
Q18S-4T0450H 45.0KW 91A
Q18S-4T0550H 55.0KW 110A 404 615 249 270 590 110 10
Q18S-4T0750H 75.0KW 150A
Q18S-4T0900H 90.0KW 176A 466 745 325 343 715 183 12
Q18S-4T1100H 110.0KW 210A


Item Specifications
Basic function Overload Capacity G type: 150% rated current 60s; 180% rated current 3s
P type: 120% rated current 60s; 150% rated current 3s
Torque boost Auto torque boost function; Manual torque boost 0.1%~30.0%
V/F curve Linear V/F, multi-point V/F and square V/F curve
V/F separation 2 ways: separation and semi-separation
Acc./dec curve Straight line or S curve acceleration and deceleration mode, Four kinds of acceleration and deceleration time. Acceleration and deceleration time range from 0.0s to 6500.0s
DC braking DC braking frequency: 0.00Hz to maximum frequency. Braking time: 0.0s to 36.0s
Brake current range: 0%-100%
Jog control Jog frequency range: 0.00Hz~50.00Hz
Jog acceleration/deceleration: 0.0s~6500.0s
Simple PLC It can realize at maximum of 16 segments speed
Basic function Multiple segment speed running Running via the built-in PLC or control terminal
Built-in PID It is easy to realize process-controlled closed loop control system
Auto voltage regulation(AVR) It can keep constant output voltage automatically in the case of change of network voltage.
Over-voltage/current stall control It can limit the running voltage/current automatically and prevent frequent over-voltage/current tripping during the running process.
Quick current limit Minimize the over-current fault, protect normal operation of the AC Drive.
Torque limit & control “Excavators” characteristics, auyomatically limit torque during operation, prevent frequent over-current tripping. Closed loop vector mode can realize the torque control.
Personalized function

Instataneous stop 


When instantaneous power off, voltage reduction is compensated through load feedback energy, which could make AC Drive keep running in a short period of time.
Rapid current limit To avoid AC Drive frequent over-current fault.
Timing control Timing control function: set time range 0Min~6500.0Min
Running Command source Operation panel reference, control terminal reference and serial communication port reference. These channels can be switched in various modes.
Frequency source These are totally eleven types of frequency sources, such as digital reference, analog voltage reference, analog current reference, pulse reference, MS speed, PLC, PID and serial port reference.
Input terminal 5 digital input terminals
2 analog input terminals
1 supportinf 0-10V voltage input or 0~20mA current input terminal
output terminal 5 digital output terminals
2 relay output terminals
2 analog output terminals, supporting 0~10V voltage output or 0~20mA current output.
Keyboard operation Keyboard potentiometer Equipped with keyboard potentiometer or coding potentiometer
Keyboard operation Protection function It can implement power-on motor short-circuit detection, input/output phase loss protection, over curent protection, over voltage protection, under voltage protection, overheating protection and overload protection.
Envionment Using place Indoor, and be free from direct sunlight, dust, corrosive gas, combustible gas, oil smoke, vapor, drip or salt
Altitude Below 1000m
Ambient temperature -10℃ to +40℃
Humidity Less than 95%RH, without condensing
Vibration Less than 5.9m/s