Yaskawa F7 series (CIMR-F7U) frequency converter

Basic Information and Scope of Application

Applicable models: CIMR-F7U (208-240V/480V full series)

Power coverage: 0.5~500HP (0.4~315kW)

Software version: V3020

Protection level: IP20/NEMA Type 1

Two operating modes:

Overload HD (C6-01=0): 150% overload for 1 minute, carrier frequency 2kHz, maximum 300Hz

Standard ND (C6-01=2): 110~120% overload for 1 minute, maximum carrier frequency 15kHz, maximum 400Hz

Safety regulations (mandatory)

Personnel qualification: Only for professional electrical personnel to operate

Power off operation: Wait for 5 minutes after power off+confirm that the CHARGE light is off+measure bus voltage<50V

Prohibited items:

It is strictly prohibited to connect capacitors or LC/RC filters to the output end

It is strictly prohibited to conduct voltage withstand tests on frequency converters

It is strictly prohibited to plug and unplug operators and terminals with power on

Grounding requirements:

208-240V model: Grounding resistance * *<100 Ω**

480V model: Grounding resistance * *<10 Ω**

Physical installation

Installation requirements

Environmental temperature: -10~+40 ℃ (closed type)/-10~+45 ℃ (open type)

Humidity: ≤ 95% RH, no condensation

Installation direction: Must be installed vertically

Heat dissipation gap:

Up and down: ≥ 50mm (small models)/≥ 120mm (large models)

Left and right: ≥ 30mm

Dimensions and Weight

Low power (≤ 18.5kW): NEMA 1 enclosure, weight 3-24kg

High power (≥ 22kW): open chassis, weight 57~404kg

Electrical wiring (core)

1. Main circuit terminal

Terminal function

R/L1, S/L2, T/L3 three-phase power input

U/T1, V/T2, W/T3 frequency converter output → motor

B1 and B2 brake resistor connection

+, – DC bus

E (G) grounding terminal

2. Control circuit terminals

Digital input: S1~S8 (forward rotation, reverse rotation, fault reset, multi-stage speed, etc.)

Analog inputs: A1 (0~10V), A2 (4~20mA), A3 (auxiliary given)

Digital output: M1~M6 (running, zero speed, frequency reaching)

Relay output: MA/MB/MC (fault alarm)

Communication: R+, R -, S+, S – (RS-485 Modbus)

3. Wiring specifications

Motor line length: ≤ 50m (carrier frequency ≤ 15kHz); ≤100m（≤10kHz）； >100m（≤5kHz）

Wire diameter: matched according to current, voltage drop ≤ 2%

Shielding: The power and control lines are laid in separate slots, and the shielding is grounded at one end

Digital manipulator

5 major menus

-DRIVE -: Operation monitoring (frequency, current, voltage)

-QUICK – Quick settings (control mode, acceleration/deceleration, motor parameters)

-ADV -: Full Parameter Programming

-VERIFY -: View modified parameters

-A. TUNE -: Automatic tuning

Common buttons

Local/Remote Switching

RUN/STOP: Run/Stop

JOG: Jogging

DATA/ENTER: Confirm

RESET: Fault reset

Startup and Debugging

Debugging process

Confirm wiring and grounding

Power on inspection

Quick settings: control mode, input voltage, acceleration/deceleration time

Input motor nameplate parameters: power, voltage, current, frequency, number of poles

auto-tuning

Test run, check steering, adjust parameters

Automatic tuning mode

Standard tuning: Motor unloading, rotation measurement (recommended for vector control)

Non rotating tuning: The motor is loaded and does not rotate

Resistance tuning only: used for V/F control

7、 Basic Programming (Key Parameters)

Core parameter table

Typical parameter function settings

A1-02 control mode 0=V/F, 1=V/F+PG, 2=no sensing vector, 3=magnetic flux vector

B1-01 frequency command source 0=panel, 1=terminal, 2=communication

B1-02 Running Command Source 0=Panel, 1=Terminal, 2=Communication

C1 01/02 Acceleration and deceleration time 0.0~6000s

C6-02 carrier frequency 2-15kHz (long line down carrier)

E1-01 input voltage 240V/480V

E2-01 motor rated current according to motor nameplate

L1-01 motor overload protection 1=standard motor, 2=strong cooling motor, 3=vector motor

Fault diagnosis and handling

Common Faults

Handling of fault code meanings

OC overcurrent check for short circuit, load, and acceleration time

OV DC overvoltage prolongs deceleration time and adds braking resistance

GF grounding fault check motor insulation and wiring grounding

LF output phase loss check wiring, terminals, and motor windings

OH heat sink overheating cleaning fan, improving ventilation

OL1 motor overload check load, adjust protection curve

OL2 frequency converter overload increases frequency converter and reduces load

Reset method

Press RESET on the operator

Power off and restart

External terminal reset