Vector frequency converter 90 kW, 380V (SPLC-AT20-90G/110P4)

Three-phase frequency converters SPLC-AT20-90G/110P4 are powered by a three-phase voltage of 380 V and are intended for controlling three-phase asynchronous motors with a voltage of 380 V and a power of up to 90 kW.

The series SPLC-AT20-90G/110P4 frequency converters can be switched to modes:

• Precise open-loop vector control (without sensors)
• Simple scalar control, involving voltage/frequency regulation, is less precise but allows triggering of "Pump" mode to operate with motors of higher power — 110 kW.

Main parameters of SPLC-AT20-90G/110P4:

• Maximum output frequency up to 600 Hz, resolution for digital frequency setting 0.01 Hz;
• Rated power supply of the frequency converter — 3ph ~380V 50/60 Hz;
• Overload capability: operation for 60 s exceeding nominal current by up to 150%, for 3 s — up to 180% (in “P” mode, overload of 120% is allowed for 60 s, 150% — no more than 3 s);
• PID control with feedback;
• Built-in controller (PLC);
• External control panel (liquid crystal display, indicators, configurable keys). By default, the removable operator panel is mounted on the device, and for remote connection, an additional connector must be ordered and purchased (not included in the cost of the frequency converter).

Main capabilities of SPLC-AT20-90G/110P4:

• Can use main and auxiliary frequency setting sources, their synthesis, switch between sources in various ways. Frequency settings possible through:
  • Digital adjustment using keys on the operator panel in the relevant menu item;
  • Digital adjustment with UP/DOWN terminals;
  • Digital setting via RS-485 port;
  • Connected to the frequency converter potentiometer;
  • Multi-speed capability with 16 pre-set frequencies of rotation duration up to 6500.0 hours with acceleration/deceleration time for each step;
  • Closed-loop PID control, with switchable PID parameters;
  • Analog electrical signal;
  • High-speed pulse signal.
• Holding starting frequency up to 100.0 s;
• Forced motor stop function using DC braking;
• Choice of acceleration/braking time and mode — linear or with S-shaped curve;
• Sleep mode with activation periods to prevent water freezing;
• JOG "jogging" mode;
• Protection functions:
  • Password-protected menu access;
  • Motor and frequency converter overload protection;
  • Module overheating protection;
  • Input/output phase break detection;
  • Response time exceedance detection for RS-485;
  • Overvoltage and undervoltage protection;
  • PID feedback sensor break detection;
  • Water pressure low/high alert, motor stop on water shortage;
  • Display of 25 error types.

You can buy a Nietz vector frequency converter for asynchronous motors with a power of up to 90 kW SPLC-AT20-90G/110P4 with a power supply voltage of 3ph AC380V with delivery to any region of Ukraine.