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5-1

Chapter 5 FUNCTION CODES

5.1 Function Code Tables

Function codes enable the FRENIC-MEGA series of inverters to be set up to match your system requirements.
Each function code consists of a 3-letter alphanumeric string. The first letter is an alphabet that identifies its group and the
following two letters are numerals that identify each individual code in the group. The function codes are classified into 13

groups: Fundamental Functions (F codes), Extension Terminal Functions (E codes), Control Functions (C codes), Motor 1
Parameters (P codes), High Performance Functions (H codes), Motor 2, 3 and 4 Parameters (A, b and r codes), Application
Functions 1, 2, and 3 (J, d, and U codes), Link Functions (y codes) and Option Functions (o codes). To determine the property of
each function code, set data to the function code.
This manual does not contain the descriptions of Option Function (o codes). For Option Function (o codes), refer to the
instruction manual for each option.
The following descriptions supplement those given in the function code tables on the following pages.

Changing, validating, and saving function code data when the inverter is running

Function codes are indicated by the following based on whether they can be changed or not when the inverter is running:

Notation

Change when running

Validating and saving function code data

Y* Possible

If the data of the codes marked with Y* is changed with

and

keys, the

change will immediately take effect; however, the change is not saved into the
inverter's memory. To save the change, press the

key. If you press the

key

without pressing the

key to exit the current state, then the changed data will be

discarded and the previous data will take effect for the inverter operation.

Y Possible

Even if the data of the codes marked with Y is changed with

and

keys,

the change will not take effect. Pressing the

key will make the change take

effect and save it into the inverter's memory.

N Impossible

—

Copying data

The keypad is capable of copying of the function code data stored in the inverter's memory into the keypad's memory (refer to
Menu #7 "Data copying" in Programming mode). With this feature, you can easily transfer the data saved in a source inverter to
other destination inverters.
If the specifications of the source and destination inverters differ, some code data may not be copied to ensure safe operation of
your power system. Whether data will be copied or not is detailed with the following symbols in the "Data copying" column of
the function code tables given on the following pages.
Y:

Will be copied unconditionally.

Y1: Will not be copied if the rated capacity differs from the source inverter.
Y2: Will not be copied if the rated input voltage differs from the source inverter.

Will not be copied. (The function code marked with "N" is not subject to the Verify operation, either.)

For details of copying operation, refer to Chapter 3, Section 3.4.9.

Using negative logic for programmable I/O terminals

The negative logic signaling system can be used for the programmable, digital input and output terminals by setting the function

code data specifying the properties for those terminals. Negative logic refers to the inverted ON/OFF (logical value 1 (true)/0
(false)) state of input or output signal. An active-ON signal (the function takes effect if the terminal is short-circuited.) in the
normal logic system is functionally equivalent to active-OFF signal (the function takes effect if the terminal is opened.) in the
negative logic system. Active-ON signals can be switched to active-OFF signals, and vice versa, with the function code data
setting, except some signals.
To set the negative logic system for an input or output terminal, enter data of 1000s (by adding 1000 to the data for the normal

Fuji Electric FRENIC-MEGA, Instruction Manual

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