Vector frequency converter 11 kW, 3F~3F/380V (SPLC-AT20-11G/15P4)

Three-phase frequency inverters SPLC-AT20-11G/15P4 are powered by three-phase voltage 380 V and are designed for controlling three-phase asynchronous motors with a voltage of 380 V and power up to 11 kW.

The model of frequency inverters in the series SPLC-AT20-11G/15P4 can be switched to modes:

• Precise vector control with open loop (sensorless)
• Simple scalar control, allowing voltage/frequency regulation. This mode is less accurate but allows operation with higher power motors.

Main parameters of SPLC-AT20-11G/15P4:

• Maximum output frequency up to 600 Hz, resolution for digital frequency setting 0.01 Hz;
• Rated power supply of the frequency inverter — 3Ph ~380V 50/60 Hz;
• Overload capacity: operation for 60 seconds with exceeding the rated current up to 150%, for 3 seconds — up to 180% (in "R" mode, overload of 120% is allowed for 60 seconds, 150% — not more than 3 seconds);
• Number of inputs and outputs of the frequency inverter:
  • Input terminals: 6 digital multifunctional inputs (two of them high-speed pulse) and 2 analogue (one 0…20 mA or 0…10 V, the other only 0…10 V);
  • Output terminals: 2 relay outputs, 1 high-speed pulse output (transistor open collector), 2 analogue outputs (0…20 mA or 0…10 V);
  • Communication port RS-485 (Modbus).
• PID control with feedback;
• Internal controller (PLC);
• Remote control panel (LCD display, indicators, configurable keys). The removable operator panel is installed by default on the device, and for remote connection, it is necessary to order and purchase a connector additionally (not included in the frequency inverter cost).

Main features of SPLC-AT20-11G/15P4:

• Can use main and auxiliary frequency setting sources, their synthesis, switch between sources in various ways. Frequency settings possible through:
  • Digital setting with panel keys in the appropriate menu item;
  • Digital setting via terminals UP/DOWN;
  • Digital setting through RS-485;
  • Connected potentiometer to the frequency inverter;
  • Multistep speed with 16 frequency presets lasting up to 6500.0 hours, acceleration/deceleration time of each step;
  • PID control in a closed loop, with switchable PID parameters;
  • Analog electric signal;
  • High-speed pulse signal.
• Holding start frequency up to 100.0 s;
• Forced motor stop by DC braking function;
• Choice of acceleration/deceleration time and mode — linear or S-shaped curve;
• Sleep mode with periods of activation to prevent water freezing;
• JOG mode;
• Protection functions:
  • Password menu access protection;
  • Motor and inverter overload protection;
  • Module overheating protection;
  • Phase failure detection at input/output;
  • RS-485 response time exceed detection;
  • Overvoltage and undervoltage protection;
  • PID feedback sensor failure detection;
  • Low and high water pressure warning, motor stop at water shortage;
  • Display of 25 error types.

With us, you can buy a vector frequency inverter Nietz for asynchronous motors with a power up to 11 kW SPLC-AT20-11G/15P4 with supply voltage 3Ph AC380V with delivery to any region of Ukraine.