PDS7 can be installed on various brands of pump motor terminal boxes, and can be accessed in various types of sensor signal, saving panel space and cost.
| Power Range | Voltage |
| 0.75~2.2kw | 220/380V |
PDS7 series VAriable Speed Drives NIETZ is a purpose-built family of variable frequency drives, designed to control and protect pumping systems based on changing pump speed.
● Using DSP high-speed digital processor and high-performance IGBT, the circuit is mature and the performance is stable;
● Newly developed software 2.0 platform, using modular design, software performance is excellent and stable;
● Adopt a new space vector algorithm with a reliable protection mechanism;
● Serial communication with Modbus RTU
● Featuring simple operation, good reliability, low noise and high performance;
● Integrated enhanced PID control algorithm: with sleep, wake-up, antifreeze, disconnection detection, high & low pressure alarm, water shortage detection, water shortage shutdown, automatic operation after water supply, automatic fault reset and other functions.
● Small design; easy programming and connection
● Precise and reliable control for AC motors, induction motors
● application in industrial, pumps and fan operation
| Item | Spetification | |
| Basic function | Control mode | V/F control |
| Max. frequency | 0～999,9Hz | |
| Carrier frequency | 0.5kHz～16kHz | |
| Input frequency resolution | Digital setting: 0.1Hz | |
| Analog setting: max frequency x 0.025% | ||
| Startup torque | G type 0.5Hz/150% | |
| P type 0.5Hz/100% | ||
| Speed range | 0.111111111 | |
| Overload capacity | G Type:60s for 150% of the rated current, 3s for 180% ofthe rated current. P Type：60s for 120% of the rated current, 3s for 150% ofthe rated current. | |
| Torque boost | Manual 0.1%~30.0% | |
| Acceleration & deceleration curve / time | 4 types / 0.0~999.9s | |
| DC braking | DC braking frequency: 0.00Hz~Maximum frequency Braking time: 0.0s~36.0s Braking action current value: 0.0%~100.0% | |
| JOG control | JOG frequency range:0.00Hz~50.00Hz。 JOG acceleration/deceleration time: 0.0s~999.9s | |
| Simple PLC、Multiple preset speeds | It implements multi-speeds via the built-in PLC function or combination of terminal states | |
| Onboard PID software | Integrated enhanced PID control algorithm: with sleep, wake-up, antifreeze, disconnection detection, high and low pressure alarm, water shortage detection, water shortage shutdown, automatic operation after water supply, automatic fault reset and other functions | |
| Auto voltage regulation (AVR) | It can keep constant output voltage automatically when the mains voltage changes | |
| Communication method | RS 485 | |
| Protection mode | Input/output phase loss protection, over current protection, over voltage protection, under voltage protection, overheat protection and overload protection | |
| Input & output | Input terminals | 2 digital input terminals; 2 analog input terminals,each of which supports 0~10V input or 4~20mA current input; Select 4-20mA, 2.00V corresponding to 4mA; 5.00V corresponding to 4mA |
| Frequency source | Digital setting, analog voltage setting, analog current setting, serial port setting. Can be perform switchover in various ways. | |
| Support command source | Operation panel/Control terminals/Serial communication port Can be perform switchover between these sources in various ways. | |
| Output Terninals | 1 transistor output terminal 1 relay output terminal | |
PDS7 series VAriable Speed Drives NIETZ is a purpose-built family of variable frequency drives, designed to control and protect pumping systems based on changing pump speed.
Manual PDS7 Pumps Drives
