Variable Frequency Drive AT24 UH

Triol AT24 VFD UH is a versatile multifunction system that provides control of asynchronous electric pumps for various purposes. This Line can be used to solve multiple issues that require use of equipment in difficult conditions with maximum protection.

  • start, stop and speed control of the pump and motor;
  • acceleration and braking at a set pace;
  • reverse;
  • acceleration, deceleration, stop;
  • motor protection against short-circuit currents, overloads;
  • control of pumps from external sensors;
  • preservation of the motor control configuration;
  • dynamic braking of the motor;
  • simultaneous control of five pump motors (macro "Cascade controller");
  • automatic control of technological processes on the principle of a closed system with the built-in PID controller;
  • automatic restart of induction motor after a power failure;
  • operation of induction motor according to a user-defined schedule in automatic or manual mode.

Power supply 3х380 V (-15 % ..+10 %)
Power frequency 50 (-15…10%) Hz
ECM Filter Built in
Throttle valve Built in
Output frequency 0..400 Hz
PWM Frequency \ Base PWM Frequency 2-10 kHz
Accuracy of maintaining speed (static)    +/- 0,1% of the rated speed in closed system +/- 10% of rated speed in open system
Range of speed 1:1000 in closed system 1:100 in open system
Reboot characteristics 120% of the nominal value for 120 s
Isolation Isolated control circuits Isolated custom circuits
Feed supply 10 V DC, ± 2% current not more than 30 mA, 24 V, 300 mA
Isolation resistence > 1 MОм
Discreteness output frequency 0.1 Hz
Communication protocol port Modbus
Physical interface 2-wire RS-485 for Modbus
Speed data transmission 1200 — 250000 bps
Control panel type Wireless with inductive charging
Relative humidity 95 %
Standards GOST 24607-88, GOST 13109-97, GOST 15150-69, GOST14254-96, GOST 17516.1-90, GOST 12.1.044-89, EN 61800-3: 2004, EN 55011, EN 61000-6 3/4
Breaking switch Optional
Efficiency 96-97%
Enclosure IP54

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