Vector frequency converter 75 kW, 380V (SPLC-AT20-75G/90P4)

Three-phase frequency inverters SPLC-AT20-75G/90P4 are powered by three-phase voltage 380 V and are designed to control three-phase asynchronous motors with voltage of 380 V and power up to 75 kW.

The model of frequency inverters series SPLC-AT20-75G/90P4 can switch to modes:

• Precise vector control with open loop (sensorless)
• Easy-to-configure scalar control, which involves adjusting the voltage/frequency. This control is less precise but allows enabling the "Pump" mode to work with higher power motors — 110 kW.

Main parameters SPLC-AT20-75G/90P4:

• Maximum output frequency up to 600 Hz, frequency adjustment resolution 0.01 Hz;
• Rated power supply of frequency inverter — 3ф ~380V 50/60 Hz;
• Overload capacity: operation for 60 s exceeding nominal current up to 150%, for 3 s — up to 180% (in "P" mode, overload up to 120% is allowed for 60 s, 150% — no more than 3 s);
• PID regulation with feedback;
• Internal controller (PLC);
• Remote control panel (LCD display, indicators, customizable keys). By default, the removable operator panel is installed on the device, and for remote connection, you need to additionally order and buy a connector (not included in the frequency inverter price).

Main capabilities SPLC-AT20-75G/90P4:

• You can use main and auxiliary frequency sources, their synthesis, switch between sources differently. Frequency settings possible through:
  • Digital setup using keys on the operator panel in the respective menu item;
  • Digital setup via terminals UP/DOWN;
  • Digital setup through port RS-485;
  • Potentiometer connected to frequency inverter;
  • Multistep speed with 16 predefined frequency settings for durations up to 6500.0 hours, acceleration/braking time for each step;
  • Closed loop PID control with switchable PID parameters;
  • Analog electrical signal;
  • High speed pulse signal.
• Holding the start frequency up to 100.0 s;
• Forced motor stop by DC braking function;
• 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 password protection;
  • Protection of motor and frequency inverter from overload;
  • Module overheat protection;
  • Phase failure detection at input/output;
  • Response time exceedance detection over RS-485;
  • Overvoltage and undervoltage protection;
  • PID feedback sensor break detection;
  • Low and high water pressure alarm, motor stop at water deficiency;
  • Display of 25 error types.

You can buy a vector frequency inverter Nietz for asynchronous motors with a power up to 75 kW SPLC-AT20-75G/90P4 with supply voltage 3ф AC380V with delivery to any region in Ukraine.