T9000S Series Multi-pump Control Inverter
Product introduction
The defining feature of the T9000S multi-pump frequency inverter is its ability to control two or more parallel-operated pumps with a single standalone unit. The inverter intelligently selects which pumps to run to reliably sustain and regulate the pumping system’s target process value, while simultaneously executing automatic alternation of pump activation cycles to guarantee equalized runtime and uniform utilization across the entire pump fleet.
- Offers unrivaled end-to-end protection for your entire pumping infrastructure, paired with unmatched user-friendliness and maximized operational accessibility—all unlocked through our innovative portfolio of tailor-made, performance-boosting special functions.
- Use the ▲▼ keys to directly adjust the target pressure value.
- Following a power cut, the device will automatically resume the active operating function when power is reinstated.
- With the extended relay output function, one inverter can now control four pumps for constant pressure water supply.
- The current transmitter is powered by a 24VDC power supply.
- The inverter is equipped with an intelligent judgment function for dormancy control.
- The English keyboard displays both the target setpoint and the feedback value.
- The unit features expandable control capacity, supporting up to 4 water supply pumps (including both the pressure stabilization pump and variable frequency driven pumps) for full water supply system management.
- Supports online selection of the feedback pressure gauge and current transmitter.
- Linkage control between one pump and one frequency inverter fulfills the complete constant pressure water supply function.
- The keypad can activate the constant pressure water supply control function, and also provides stop and fault reset functions.
Technical characteristics
| Item | T9000S series Inverter |
| Control mode | V/F control Open loop vector control (without PG); Closed loop vector control (with PG). |
| Maximum frequency | 0.00-600.00Hz. |
| Carrier frequency | 0.5kHz~8kHz The carrier frequency is automatically adjusted based on the load features. |
| Input frequency resolution | Digital setting:0.01Hz Analog setting: Maximum frequency 0.025% |
| Start torque | G-type:0.5Hz/150%(no PG); P-type :0.5Hz/100% |
| Speed range | 1:100(No PG) |
| Speed stability accuracy | ±0.5%(No PG) |
| 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. |
| Torque boost | Auto-boost ; Customized boost:0.1%~30.0%. |
| VF curve | Straight-line VF curve; Multi-point VF curve; N-power VF curve (1.2 power, 1.4 power, 1.6 power, 1.8 power, 2 power) |
| VF separation | 2 types: complete separation；half separation. |
| Ramp Mode | Linear or S-curve acceleration and deceleration mode. Four kinds of acceleration and deceleration time, acceleration and deceleration time range 0.0~6500.0s. |
| DC braking | Dc braking frequency :0.00Hz~ maximum frequency；Braking interval :0.0s~36.0s ；Braking action current value :0.0%~100.0% |
| JOG control | Jog frequency range：0.00~50.00Hz Jog acceleration/deceleration time：0.0~6500.0s |
| Simple PLC; Multi-speed operation | Up to 16 segment speeds are possible with built-in PLC or control terminals. |
| Built-in PID | It is convenient to realize the closed-loop control system of process control. |
| Automatic Voltage Regulation (AVR) | When the grid voltage changes, it can automatically keep the output voltage constant. |
| Overvoltage and overcurrent stall control | Automatic current and voltage limit during operation to prevent frequent overvoltage skipping. |
| Rapid current limiting function | Minimize the overcurrent fault and protect the normal operation of the inverter. |
| Torque limit and control | Automatic torque limit during operation to prevent frequent overcurrent tripping; The closed-loop vector mode(FVC) enables torque control. |
| Excellent performance | The control of asynchronous motor is realized with high performance current vector control technology. |
| Instant stop non-stop function | The load feedback energy is used to compensate the voltage reduction in the transient power failure, and the inverter can continue to run for a short time. |
| Rapid current limit | It helps to avoid frequent over current faults of the AC drive. |
| Timing control | Timing range:0.0Min-6500.0Min. |
| Communication | Modbus RS485； |
| Command source | Operation panel, control terminal, serial communication port. Users can switch in a variety of ways. |
| Frequency source | 10 frequency sources: digital set, analog voltage set, analog current set, pulse set, serial port set. Users can switch in a variety of ways. |
| Auxiliary frequency source | 10 auxiliary frequency sources. Users can flexibly realize auxiliary frequency fine-tuning and frequency synthesis. |
| Input terminal | Standard :5(1PH 220V 0.4kW-3.7kW-vector control /3PH 380V 0.4kW-5.5kW vector control) / 6(7.5kW or more) digital input terminals, The S3 supports high-speed pulse input up to 100kHz; 1 (below 5.5KW) / 2 (above 7.5KW) analog input terminals, 1 support 0-10V voltage input, 1 (above 7.5KW) support 0-10V voltage input or 4-20mA current input. |
| Output terminal | 1 high-speed pulse output and collector output terminals ; 1(below 5.5KW)/2(above 7.5KW) relay output terminal; 1(1PH 220V 0.4kW-3.7kw-vector /3PH 380V 0.4KW-5.5KW vector)/ 2(7.5KW or more) analog output terminal, support 4~20mA current output or 0~10V voltage output. |
Unique features
| Water Supply Function | Description | Code Display |
| Add pump | If the operating frequency is higher than the Add pump frequency PA.51, and the feedback is less than 95% of the set value, and the duration is longer than the Add pump time PA.52, the current pump will be switched to commercial power supply frequency operation mode, and inverter starts the next pump . | - |
| Reduce pump | When the operating frequency is less than the Reduce Pump frequency PA.53, and the feedback is higher than 95% of the set value, and the duration is longer than the Reduce Pump time PA.54, the earliest commercial power supply pump will be stopped. | - |
| Switch pump | When the inverter pump is running, and the duration reaches the pump replacement time, it will be switched to the next pump. | - |
| The function of terminal stop pump | Stop the water pump function with multi-function terminal 51: Pump 1 invalid 52: Pump 2 invalid 53: Pump 3 invalid 54: Pump 4 invalid When the corresponding input terminal is closed 1) If the pump is running at the commercial power supply frequency, immediately disconnect the motor, 2) If the pump is running at inverter frequency and there are idle pumps, immediately enter the pump switching mode. 3) If the pump is running at inverter frequency and there is no idle pump, the commercial power supply pump will stop, and after the delay time, switch to variable frequency running. | - |
| Auto start when power on | Power-on auto start delay time PA.38, PA.38=0 power-on auto start is invalid; PA.38 factory default value is 0 | - |
| Pressure setting and display | Digital tube “setting pressure, feedback pressure” at the same time, the unit is Bar; can shift to display other contents；Press the up and down keys to adjust the pressure mode, refer to the parameters of PA.00；PA.00=0: digital target value PA.01；PA.00=3: digital target value PA.01, which can be set with the up and down keys; the pressure screen will be displayed when changing | - |
| PID sleeping function | 1) When the pressure is reached, the running frequency is less than the sleeping frequency PA.29 and the duration is longer than the sleeping time PA.30, the frequency becoming 0, it enter into sleeping state and displays 'SLP' 2) When the running frequency is higher than the sleeping frequency PA.29, and the frequency is stable, and it will also enter into the sleeping state. Refer to parameters PA.45~PA.48 3) If the frequency is higher than PA.49, sleeping function is invalid. 4) Sleep only when one inverter pump is running | SLP |
| PID wake-up or water leak detection function | Under sleeping mode, if the pressure drop deviation is bigger than the set pressure setting PA.31, the inverter wakes up and PID function starts. | - |
| Anti-freeze | Under sleeping mode, if the duration is longer than PA.42, inverter will wake up and run with time of PA.43 at the frequency of PA.42. | - |
| Pressure sensor disconnect detection | When pressure sensor disconnect, inverter will alarm and display “PIDE”, Refer to the parameter of PA26, PA27 | PIDE |
| High water pressure warning | When the pressure is higher than PA.32 and the duration is longer than 0.1S, alarm high pressure fault and stop, the fault code is 'HP', (after the pressure returns to normal, delay PA.35 and automatically reset the fault) | HP |
| Low water pressure warning | When the pressure is lower than PA.33 and the duration is longer than PA.36, alarm low pressure fault and stop, the fault code is 'LP', (after the pressure returns to normal, delay PA.35 and automatically reset the fault) | LP |
| No water warning | 'Detection frequency A' =maximum frequency P0.12 - 2Hz If the frequency of the inverter is higher than 'detection frequency A', the duration is longer than PA.37 and the pressure is less than PA.34, it will alarm no water fault and stop, and the fault code is 'LL' | LL |
| No Water fault auto reset function | When no water fault occurs, the inverter will automatically reset the fault and run, and the automatic reset interval time refers to PA.39. PA.40. Auto stop when there is no water, , and automatically resume the water supply when water comes. (In the keyboard operation mode,need to turn on the automatic power-on and automatic operation function ) | - |
Application
The T9000S Series by ZONCN Technology is a high-performance dedicated inverter engineered for water pump applications. It supports intelligent coordinated control of up to 4 pumps with a single unit, and is widely compatible with a full range of water pumps including centrifugal pumps, submersible well pumps, booster pumps, circulation pumps, fire pumps and sewage pumps.
Equipped with a professional PID constant pressure control algorithm, this product features automatic pump rotation, intelligent switching for faulty pumps, and sleep/wake-up functions, delivering stable operation and remarkable energy savings. It is extensively applied in building secondary water supply, municipal water supply and drainage, industrial circulating water systems, agricultural irrigation, sewage treatment and fire water supply. Without extra controllers, it realizes multi-pump networking, greatly simplifying the system architecture and cutting operation and maintenance costs, making it an ideal solution for various multi-pump coordinated control scenarios.
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