LENZE EA-4/10 Signal conversion module or analog quantity regulation board

Lenze EA-4/10 is an electronic module/board produced by the German company Lenze, which is usually used in its early industrial drive control systems (such as DC drives or specific inverter accessories).

EA-4/10 is usually defined as a signal conversion module or an analog regulation board.

Its main role in the system is to process and convert control signals, such as converting specific analog signals (voltage/current) into instructions that the driver can recognize, or for fine-tuning speed and torque.

Common applications

It is commonly found in Lenze's classic series, such as the 530 series or 400 series DC speed regulators.

It can often be seen in the control cabinets of old packaging machinery, textile equipment and printing machines.

Appearance features

It is usually an open printed circuit board (PCB) without a casing.

The board is equipped with multiple adjustable potentiometers (for manual calibration of gain, zero point, etc.).

The edges are usually equipped with wiring pins or European-style sockets, facilitating installation on the motherboard or base.

Technical key points

Input/output: Mostly analog signals (such as 0-10V, ±10V or 4-20mA).

Maintenance suggestions: As this model is an older electronic component, the aging of electrolytic capacitors or poor contact of potentiometers are common causes of failure.

When replacing or repairing, it is recommended to record the physical position of the potentiometer on the original board card for initial synchronization on the new board.