Product Description:

The 135U1923 is an AC drive produced by Danfoss and assigned to the VACON 20 Low Voltage Drives series. As a compact variable-frequency inverter, it modulates motor speed and torque in automated machinery, allowing energy savings and accurate process control on assembly lines, conveyors, pump systems, and similar industrial equipment. The front surface includes a built-in control panel for local start, stop, and parameter entry.

This model delivers a continuous motor current of 9 A, indicating the maximum steady-state load it can supply without derating. The nominal line draw is 11.5 A, so branch protection and cabling must support that value during typical operation. A 3-phase mains connection ensures balanced power delivery and reduced harmonic content compared with single-phase supplies. The drive is sized for motors up to 4 kW, matching small and mid-range induction machines used in material handling or HVAC equipment. A built-in RS-485 port provides serial networking for remote parameter setting and status monitoring, simplifying integration into PLC-controlled systems. An internal brake chopper dissipates regenerated energy during fast deceleration, and the 20 A semiconductor fuse rating indicates the upstream protection device needed to interrupt fault currents quickly.

The housing carries an IP20 rating, so it is finger-safe but requires installation inside a control cabinet for dust or liquid exposure. Short bursts of overload can be handled up to 13.5 A, giving temporary torque boosts without exceeding thermal limits. Electromagnetic emissions comply with category C2, permitting use on industrial low-voltage networks where some filtering is already present. Mechanical proportions correspond to frame size MI3, helping installers reserve the correct DIN rail or back-plate space. Shield termination points are provided to support EMC performance.