KEB COMBIVERT F4 series frequency converter

1. Basic information

The KEB COMBIVERT F4 series frequency converter (C/S version control board) 2004 version English operation manual covers safety specifications, terminal wiring, panel operation, CP parameter setting, fault diagnosis, and password management. It specifies key requirements such as 5-minute power-off maintenance, digital support for 13-30VDC, analog adjustable 0-10V/0-20mA/4-20mA, and is suitable for industrial motor speed regulation and protection scenarios.

2. Safety operation requirements

Only professional electrical personnel are allowed to install, wire, and debug

After power failure, the capacitor in the middle circuit is still charged and must wait for 5 minutes before operation

Compliance with standards: DIN VDE 0100, IEC1000, EN 60204-1, EN 55014, EN 50082-2

Relays connected to inductive loads require the installation of freewheeling diodes for protection

3. Control terminal wiring (core)

C-version terminal X1 (23 pin)

Terminal group functional specifications

X1.1-3 Fault Relay Default Fault Indication

X1.4-5 multi-stage speed I1/I2 3-stage fixed frequency

X1.10-11 Forward Rotation F/Reverse Rotation R Forward Rotation Priority

X1.17 Simulate Given REF 0-10V/0-20mA/4-20mA (CP24)

X1.19 Enable ST to run with power on

X1.20 Reset RST Fault Clearing

S-version terminal X1 (14 pin)

Simplify interfaces, merge enablement+reset ST/RST

Analog quantities, relays, and multi-stage logic are consistent with version C

EMC Wiring Specification

Use shielded cables, with the shielding layer grounded on one side

The distance between the control cable and the power cable is 10-20cm, intersecting at a 90 ° angle

Digital power supply: 13-30VDC, analog input impedance 4k Ω/40k Ω

4. Operation panel and display

Panel: 5-digit LED, FUNC/UP/DOWN/START/STOP/ENTER/F/R keys

Display item:

CP1: Actual frequency (resolution 0.1Hz)

CP2: Running status (noP/L5/FAcc/FCon, etc.)

CP3: Actual load (* * 1% * * accuracy)

CP4: Peak load

Parameter modification: FUNC switch number/value, UP/DOWN adjustment, ENTER save

5. Core CP parameter table

Parameter function adjustment range default value accuracy

CP.5 Rated frequency 0-409.58Hz 50.0Hz 0.0125Hz

CP.6 Torque increase 0-25.5% 2% 0.1%

CP.7 Acceleration time 0.01-300s 10s 0.01s

CP.8 Deceleration time 0.01-300s 10s 0.01s

CP.9 Minimum frequency 0-409.58Hz 0Hz 0.0125Hz

CP.10 Maximum frequency 0-409.58Hz 70Hz 0.0125Hz

CP.14 Accelerated current limiting 10-200% 140% 1%

CP.15 Constant speed current limit 10-200% 200% 1%

CP.20 DC braking mode 0-9 7 1

CP.21 Braking time 0-100s 10s 0.01s

CP.24 Analog range 0-2 (0-10V) 1

6. Drive mode

Activation: Enter CP0 password

Operation: Panel controls start stop, direction change, and frequency setting separately

Exit: Press and hold FUNC+ENTER for 3 seconds in shutdown mode

7. Fault diagnosis

Common faults:

E. LP: Undervoltage (low input/incorrect wiring)

E. OP: Overvoltage (input high/deceleration too fast)

E: Overcurrent/grounding fault

Overheating: Internal temperature>70 ℃, poor heat dissipation

Reset: After clearing the fault, press RST terminal or ENTER+power off and restart

8. Password Management (CP.0)

Mode 1: Parameter Read Only

Mode 2: Parameter Read and Write

Mode 3: Activate Drive Mode

Factory password free, 0-9999 password can be set to prevent accidental operation

Key questions and answers

Question 1: Why do we have to wait for 5 minutes to operate the KEB F4 frequency converter after it is powered off?

Answer: After the inverter is powered off, the middle circuit capacitor still carries high voltage. Waiting for 5 minutes can ensure that the capacitor is completely discharged, avoiding the risk of electric shock, which is a mandatory safety requirement.

Question 2: What is the core difference between the C and S version control terminals?

Answer: Version C has a 23 pin X1 terminal, with complete functionality including independent enable ST, reset RST, and differential reference; The S version features 14 pin simplified terminals, merging ST/RST and eliminating some expansion interfaces, resulting in simplified wiring.

Question 3: What is the function of the CP.24 parameter and what are the three signal configurations?

Answer: CP.24 is used to set the input range for * * C version simulation given REF (X1.17) * *, with three configurations:

0:0-10VDC (default)

1：0–20mA

2：4–20mA