Three-phase vector frequency converter with feedback 0.75 kW SPLC-AT20-0R75G4 is powered by three-phase voltage 380 V and is designed to control three-phase asynchronous motors with voltage 380 V and power up to 0.75 kW.
The frequency converter series model SPLC-AT20-0R75G4 can switch to modes:
- Accurate vector control with open loop (without sensors),
- Simple to set up vector control, which consists of voltage/frequency adjustment (V/f). This mode is less accurate but allows working with higher power motors.
Main characteristics of inverter AT20-0R75G4
- Maximum output frequency up to 600 Hz, digital frequency setting resolution 0.01 Hz;
- Rated power supply of the frequency converter — 3ph ~380V 50/60 Hz;
- Overload capability: operation for 60 s exceeding the rated current up to 150%, for 3 s — up to 180% (in “R” mode, overload of 120% is allowed for 60 s, 150% — no more than 3 s);
- PID control with feedback;
- Internal controller (PLC);
- Remote control unit (liquid crystal display, indicators, programmable keys). By default, the removable operation panel is installed on the device, and for remote connection, you need to order and buy a connector (not included in the cost of the frequency converter).
Table — Main technical parameters of inverters SPLC-AT20-0R75G4
| Input Voltage |
3ph 380 V
|
| Output Voltage |
3ph 380 V
|
| Output Power |
up to 0.75 kW
|
| Output Frequency Range |
from 0 to 600 Hz
|
| Rated Input Current |
3.8 A
|
| Rated Output Current |
2.5 A
|
| Protection Degree EN 60529 |
IP20 |
Main Features SPLC-AT20-0R75G4
- The primary and auxiliary frequency setting sources can be used, synthesized, and switched in various ways. Frequency settings are possible via:
- Digital setting with keys on the operator panel in the respective menu item;
- Digital setting using terminals UP/DOWN;
- Digital setting via port RS-485;
- Potentiometer connected to the frequency converter;
- Multistep speed with 16 preset frequencies and duration up to 6500.0 hours, acceleration/deceleration time for each step;
- PID control in a closed loop with switchable PID parameters;
- Analog electrical signal;
- High-speed pulse signal.
- Starting frequency hold up to 100.0 s;
- Forced motor stop function by DC braking;
- Choice of acceleration/deceleration time and mode — linear or S-curve;
- Sleep mode with activation periods to prevent water freezing;
- “Jog” mode;
- Protection functions:
- Menu access protection with password;
- Motor and frequency converter overload protection;
- Module overheat protection;
- Phase breakage detection on input/output;
- RS-485 response time exceeding detection;
- Overvoltage and undervoltage protection;
- Feedback sensor break detection for PID;
- Low and high water pressure alert, motor stop if lack of water;
- Display of 25 types of errors.
Frequency Converter Circuit SPLC-AT20-0R75G4
Number of inputs and outputs for converter control:
- Input terminals: 4 multifunctional digital inputs and 1 analog (voltage 0…10 V or current 4…20 V), switching via jumper J1;
- Output terminals: 1 relay output;
- RS-485 communication port (Modbus).
In the company "Specialist" you can buy a vector frequency converter Nietz AT20-0R75G4 for asynchronous motors with power up to 0.75 kW and voltage 3ph ~ AC380V with delivery to any region of Ukraine.
In Stock
