Lenze 8400 Inverter Debugging Guide

4. Grade 5

PID parameters:

C00222: Proportional gain Vp (default 1.0)

C00223: Integral time Tn (default 400 ms)

C00224: Differential gain Kd (default 0.0)

C00225/C00226: Output limiting (± 199.99%)

The actual value signal can be connected through analog input (with C00698/C00672 configured for offset and gain).

7.4 Parameter Change over

8400 StateLine supports grouping up to 32 parameters into 4 value sets, which can be switched online through two binary inputs. Configuration steps:

List parameter numbers in C01085/1... n in the format of "code. subcode".

Fill in value set 1 in C01086/1... n, value set 2 in C01087, and so on.

Select a value set by controlling the input bSelectWriteValue_1 and bSelectWriteValue_2.

Write the selected value set when bExecute rises.

This feature is very suitable for devices that require quick switching of driving parameters based on different process formulas.

Precautions for replacing old frequency converters

When replacing old models (such as Lenze 8200, 9300, or third-party brands) with 8400 StateLine C, please note:

Control mode matching: The old system may use 0... 10V analog inputs, which are consistent with the default settings of 8400; If using 4... 20mA, C00034/1=2 needs to be set.

Terminal function mapping: The digital input function of old devices may be different. The pre allocation mode of 8400 (Terminals 0/2/11/16) provides multiple options; If it still does not match, you can use the Free Interconnection feature of Engineer software to reassign.

Motor parameter transplantation: Manually input the rated voltage, current, frequency, power factor and other parameters of the old frequency converter into C00084... C00092 of 8400.

Acceleration and deceleration time: The slope time of the old equipment can be directly copied to C00012, C00013, and C00105.

Braking resistor: If the old equipment is connected to an external braking resistor, please confirm whether the resistance value and power meet the 8400 specification, and connect it to Rb1 and Rb2.

Installation size: Please refer to the hardware manual for the width and height of the 8400 StateLine C, which may require adaptation to the installation board.

Software compatibility: If the old system is controlled through fieldbus (such as PROFIBUS, CANopen), 8400 needs to insert the corresponding communication module (such as MCI card) and reconfigure the parameters.