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Product Name：PDS7 series - Wall-mounted Variable Speed Drives
Category：Frequency Inverter
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: 0.75~2.2kw
Voltage: 220/380V
► BROCHURE 
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- Features
- Application
- Download
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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
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♦ 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;
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♦ 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
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| Item |
PDS7 series Variable Speed Drives |
| 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% of the rated current.
P Type：60s for 120% of the rated current, 3s for 150% of the 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 |
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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
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