Product Description:

The 131B0004 is an AC variable-frequency drive produced by Danfoss in the VLT FC 302 Automation Drives series. It is intended for standard cabinet mounting with A, B, and C frames, where it regulates induction motor speed for conveyors, pumps, and similar automated machinery. By converting fixed three-phase mains power into a variable-frequency, variable-voltage output, the unit can improve energy efficiency and provide precise torque control across a broad range of industrial automation tasks. Its adjustable output allows connected motors to operate at speeds that match changing process demands rather than running continuously at full speed.

The drive provides a continuous motor output of 10 HP, which corresponds to an electrical power rating of 7.5 kW under rated operating conditions. The input bridge accepts 380–500 VAC, allowing direct connection to common 400 V industrial networks without additional transformers. The unit requires three-phase power, so balanced line conductors should be used to maintain stable operation and limit excessive current imbalance. Its IP20 chassis protection guards against accidental finger contact with hazardous internal components. Because the chassis is not sealed against dust or water, the drive should be installed in a clean, dry cabinet that provides suitable protection from the surrounding environment. Adequate cabinet ventilation should also be maintained so heat can dissipate during continuous operation.

Electromagnetic interference is reduced by the integrated RFI Class A1/B (C1) filter, which limits conducted emissions on the connected power network. Excess regenerative energy is diverted through a built-in brake chopper, helping protect the DC bus during rapid deceleration or operation with overhauling loads. The drive has uncoated control electronics, so installations should avoid high humidity, condensation, corrosive gases, and other contaminants that could damage exposed circuitry. Cable termination is provided through standard cable entries that accommodate common metric gland plates. These entries simplify the routing and strain relief of mains, motor, and control wiring inside the cabinet. Proper separation between power and signal cables can further reduce electrical noise and help preserve the accuracy of control and feedback signals.