178B4811
Wake Industrial LLC is not an authorized distributor of this product.
MPN: VLT6102GT4CN1STR0DLF00A00C0
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The 178B4811 HVAC drive, part of the VLT 6000 series, delivers a nominal output current of 11 A at 575 V, a typical shaft output of 10 HP, and operates efficiently at 96%. Manufactured by Danfoss, this drive features NEMA 1/IP20 enclosure protection, supports supply voltages from 525 to 600 V, and weighs 10.5 kilograms.
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Product Description:
Danfoss produces 178B4811 as a 380 - 460 VAC rated drive for automation systems with specification code VLT6102GT4CN1STR0DLF00A00C0. It provides a power rating of 75 kW that is equivalent to 100 HP. The drive is housed in a compact IP-20 enclosure and it favors installation in a protective environment.
The 178B4811 drive supports multiple input/output options that includes 8 digital inputs, which are capable of accepting 0 - 24 VDC signals and these inputs use PNP positive logic, while possess an input resistance of 2 kΩ. It also includes 2 analogue inputs with a 0 - 10 VDC input range and offers scalable voltage for flexibility in various feedback systems. For pulse signals, the unit provides 3 pulse inputs with a peak frequency of 5000 Hz for terminal 17 and 20000 Hz for terminals 29 and 33. The drive ensures high torque capabilities with a 110% starting torque for 1 minute and 160% break-away torque for up to 0.50 sec. It offers 100% acceleration torque and 110% overload torque for varying load conditions. This 178B drive has an efficiency of 0.95 at rated load to maximize power saving and it has a maximum short-circuit current of 100 kA.
The 178B4811 drive’s also incorporates thermal protection for motor that is default-set to ETR trip 1 and furthermore, the drive offers earth fault protection on motor terminals as well. It also incorporates temperature monitoring that automatically shuts down the unit if the heat sink temperature exceeds 95°C. This 178B drive supports a peak load current of 143 A and its maximum input current is 145 A at 380 VAC, while its power loss at full load is measured as 1467 W.
Frequently Asked Questions about 178B4811:
Q: What advantage does the 110% starting torque of the Danfoss 178B4811 provide?
A: The 110% starting torque enables the drive to overcome friction and load inertia during startup, improving motor acceleration. This helps prevent stalling under demanding load conditions.
Q: Why are pulse-input frequencies up to 20 kHz beneficial in the 178B4811?
A: The high-frequency pulse inputs allow precise speed and position feedback, supporting fast and accurate control loops. This enhances dynamic response in automation and servo-like applications.
Q: What does an efficiency of 0.95 at rated load mean for the 178B4811?
A: The 95% efficiency means only 5% of input energy is lost as heat, reducing waste and improving energy usage. This supports cost-effective, continuous motor operations.
Q: How does earth-fault protection on U, V, W terminals benefit users of the 178B4811?
A: The earth-fault detection on the motor terminals quickly identifies insulation failures, preventing damage to both motor and drive. It enhances safety and reduces downtime in the control system.
Q: How do the 0–10 V analogue inputs enhance control flexibility?
A: The 0–10 V analogue inputs allow variable reference signals from sensors or control systems, enabling smooth speed or setpoint adjustments. This flexible interface supports integration with PLCs and building management systems.
