131L9799
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The Danfoss 131L9799 is part of the VLT FC 101 HVAC Basic Drives series and features a power rating of 7.5 kW. This three-phase drive operates with an input voltage of 200-240 VAC and a current rating of 28 Amps, while offering a frequency of 50/60 Hz. It includes an IP20 protection class for reliable operation.
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Product Description:
The 131L9799 Frequency Converter delivers a shaft output of 7.5 kW (10.0 hp) and supports a wide frequency range. Its robust control capability makes it suitable for both light duty and heavy duty load operations.
The 131L9799 frequency converter from Danfoss supplies a continuous current of 28.0 A and an intermittent current of 30.8 A at 3 x 200 – 240 V and 40 °C ambient temperature. It includes Automatic Motor Adaptation (AMA) which identifies motor parameters at standstill and adjusts for cable resistance that ensures optimal motor performance. The terminal 50 provides a 10.5 V DC analog output (± 0.5 V) with a maximum load of 25 mA that is suitable for analog signal interfacing. The model allows up to 16 mm² (AWG 6) cables for both mains and motor terminals in terms of connection capacity. The converter also features Electronic Thermal Relay (ETR) functionality to estimate motor temperature in real time that helps to prevent thermal overload. Its output frequency range of 0 – 400 Hz offers precise speed control for variable torque applications. Its support for large cable sizes and multiple output interfaces increases installation flexibility.
The 131L9799 frequency converter from the VLT FC 101 HVAC Drive series permits unlimited switching on the output that ensures flexibility for cyclic duty operations. Four digital outputs are available: terminals 27 and 29 operate from 0 – 24 V with a current capacity of 40 mA (sink/source) while terminals 42 and 45 provide a fixed 17 V signal with a 20 mA output and support loads up to 1 kΩ. A 24 V DC output is also available from terminal 12 that supports up to 80 mA for auxiliary devices. The model provides stable performance and dependable motor protection whether used in fan, pump or conveyor applications.
Frequently Asked Questions about 131L9799:
Q: How does the 131L9799 frequency converter adapt motor parameters during commissioning without rotation?
A: The 131L9799 uses Automatic Motor Adaptation (AMA) to identify motor characteristics at standstill. It also compensates for cable resistance to improve performance without motor movement.
Q: Can the 131L9799 frequency converter support reliable switching for high-cycle HVAC control applications?
A: This model allows unlimited output switching, making it ideal for frequent start-stop sequences. It handles cyclic loads without degrading control reliability or response precision.
Q: What protection mechanisms does the 131L9799 frequency converter offer for thermal stress management?
A: An integrated Electronic Thermal Relay (ETR) estimates real-time motor temperature. It actively helps prevent thermal overload during extended or fluctuating load conditions.
Q: How flexible is the 131L9799 frequency converter when interfacing with external analog devices or controllers?
A: Terminal 50 provides a 10.5 V DC analog output suitable for analog signal integration. It ensures stable feedback to external control systems with up to 25 mA load support.
Q: How does the 131L9799 frequency converter support varying cable and power setups across applications?
A: It accepts cable sizes up to 16 mm² for both mains and motor terminals. This allows robust connectivity for diverse installations, especially where current demands vary.
