Vector frequency converter 5.5 kW, 3F/380V (SPLC-AT20-5R5G4)

Three-phase frequency converters SPLC-AT20-5R5G4 are powered by three-phase voltage 380 V and designed to control three-phase asynchronous motors with voltage 380 V and power up to 5.5 kW.

The model of frequency converters series SPLC-AT20-5R5G4 can switch modes:

• Precise vector control with an open loop (without sensors)
• Easy-to-adjust scalar control, involving voltage/frequency regulation. This mode is less precise but allows working with higher power motors.

Key parameters of SPLC-AT20-5R5G4:

• Maximum output frequency up to 600 Hz, resolution for digital frequency adjustment 0.01 Hz;
• Nominal power supply of frequency converter — 3ph ~380V 50/60 Hz;
• Overload capacity: operation for 60 s with overcurrent up to 150%, for 3 s — up to 180% (in “P” mode, overload 120% is allowable for 60 s, 150% — no more than 3 s);
• Number of inputs and outputs of frequency converter:
  • Input terminals: 6 digital multifunctional inputs (two of them high-speed pulse) and 2 analog (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 with open collector), 2 analog 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). By default, the removable operator panel is installed on the device, but for remote connection, a connector must be additionally ordered and purchased (not included in the frequency converter price).

Main features of SPLC-AT20-5R5G4:

• Can use the main and auxiliary frequency setting sources, their synthesis, switching between sources in various ways. Frequency settings possible via:
  • Digital adjustment with keys on the operator panel in the appropriate menu item;
  • Digital adjustment using terminals UP/DOWN;
  • Digital setting via port RS-485;
  • Potentiometer connected to the frequency converter;
  • Multistep speed with 16 preset rotation frequency steps lasting 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.
• Holds starting frequency 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 a password;
  • Motor and frequency converter overload protection;
  • Module overheat protection;
  • Phase loss detection at input/output;
  • RS-485 response time exceeded detection;
  • Over-voltage and under-voltage protection;
  • Feedback sensor failure detection for PID;
  • Alarm for low and high water pressure, motor stop when water is insufficient;
  • Display of 25 types of errors.

You can buy the Nietz vector frequency converter for asynchronous motors with power up to 5.5 kW SPLC-AT20-5R5G4 with power supply 3ph AC380V with delivery to any region of Ukraine.