FC-202N250T4134G6725 Danfoss
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The Danfoss FC-202N250T4134G6725 is part of the VLT FC 202 AQUA Drives series and operates on three phase power with a mains voltage range of 380 to 480 VAC. It provides one analog output with an 8 bit resolution and two digital outputs supporting currents up to 40 mA. This drive offers a maximum output frequency of 32 kHz and a displacement power factor greater than 0.98.
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Product Description:
The FC-202N250T4134G6725 is an AC variable frequency drive manufactured by Danfoss for the VLT FC 202 AQUA Drives series. Within automated water and wastewater plants, the unit converts constant-frequency three-phase mains power into a variable-frequency output that lets centrifugal pumps and blowers run only as fast as the process requires. This electronic speed control avoids the mechanical losses associated with throttling valves, maintains stable flow, and supports the accuracy required by modern SCADA systems. The compact chassis installs in standard control cabinets and follows the wiring and code conventions used by the AQUA product group.
The power section accepts an input of 380–480 VAC, allowing installation on common low-voltage industrial mains. It is intended for three-phase power, and the supply must remain within a 3.0% phase imbalance to prevent excessive direct-current ripple in the intermediate circuit. Control terminal 53 has an input resistance of 4 kΩ, which is high enough to pair with typical 0–10 V or 4–20 mA transducers without a measurable signal drop. Internally, insulated-gate drivers can operate at carrier frequencies up to 32 kHz, allowing audible motor noise to be balanced against switching losses. The variable-frequency output also supports controlled acceleration and deceleration, reducing abrupt mechanical stress on connected pumps, couplings, and piping systems during changes in operating demand.
The signal section provides one analog output that can drive loads down to 500 Ω with 8-bit resolution for scaled speed or process feedback. Two digital outputs are available, and each can sink 40 mA, tolerate capacitive loads up to 10 nF, and remain stable with a 1 kΩ external load. This output capacity enables direct activation of compatible relays or optocouplers used for status signaling and process control. On the power-quality side, the displacement power factor is greater than 0.98, while the true power factor is at least 0.9, reducing the need for external power-factor correction capacitors. The available analog and digital channels allow the drive to exchange operating data and control signals with common automation equipment in fluid-handling systems.
