LENRZ L5311 Power Supply Module

The part number L5311 (often paired with the name LENRZ or LENZE) refers to an industrial electronic component typically used in power control and automation.

Based on technical cross-references, this part is most commonly identified as:

1. ABB / LENRZ L5311: Power Supply Module

In most modern industrial contexts, the L5311 is a high-performance DC Power Supply Module specifically designed for the ABB AC 800M programmable controller system.

Function: It provides regulated power to the processor and I/O modules within a control rack.

Context: It is frequently listed in international automation catalogs as "ABB LENRZ L5311" due to manufacturing partnerships or legacy branding.

2. Lenze Drive Association

If you are seeing the name LENZE explicitly on the hardware, the "L5311" code is likely an internal board identifier or a specific sub-component used within Lenze i500 or SMD series frequency inverters.

Application: These are Variable Frequency Drives (VFDs) used to control the speed of AC induction motors in conveyor systems, pumps, and fans.

Maintenance: If this is a circuit board inside a drive that has failed, it is usually replaced as a complete unit (e.g., the power section or the control head) rather than at the individual board level unless you are performing specialized component-level repair.

Comparison & Verification

To confirm which one you have, check the physical characteristics:

Feature    ABB / LENRZ L5311    Lenze Component

Physical Appearance    Large module with terminal blocks for PLC racks.    A circuit board inside a plastic VFD housing.

Main Labels    Often labeled "ABB" or "AC 800M".    Labeled "Lenze", "i550", or "SMD".

System    Part of a Logic Controller (PLC).    Part of a Motor Controller (Drive).