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KEB Error Messages


For successful error diagnosis, you will find all the important information about your frequency converter error codes here. Simply match the code on the display with our list and learn how to proceed to resolve the error—from simple self-help to contacting us or using our repair service. That way, you can quickly and efficiently solve any problem:

KEB error messages

Message

Value

Description

Action Instruction

Error! Brake Control

56

An error can occur with the brake control active if

• the load at startup is below the minimum load level (Pn.43) or a missing motor phase is detected.

• the load is too high and the hardware current limit has been reached.




☎️

Contact us at 05262 99104!

Message

Value

Description

Action Instruction

Error! Watchdog

18

The set monitoring time (watchdog) for the communication between the operator and the PC, or between the operator and the converter, has been exceeded.


Reset the error!

Message

Value

Description

Action Instruction

Error! Driver Relay

51

The relay for the driver voltage on the power unit did not engage when the controller was enabled or did not disengage when the controller was disabled.


⚙️

Use our Repair Service!

Message

Value

Description

Action Instruction

Error! Drive Data Calculation

60

An error occurred during the automatic motor stator resistance measurement.

Reset the error!

Message

Value

Description

Action Instruction

Error! Encoder 1 Counter Overflow

54

The counter for encoder channel 1 has reached an invalid value.

Reset the error!

Message

Value

Description

Action Instruction

Error! Encoder 2 Counter Overflow

55

The counter for encoder channel 2 has reached an invalid value.

Reset the error!

Message

Value

Description

Action Instruction

Error! Motor Overheating

9

The motor temperature switch or PTC at terminals T1/T2 has tripped. The error can only be reset at E.ndOH when the PTC is low-resistance again.

Causes:

• Resistance at terminals T1/T2 >1650 Ohms

• Motor overloaded

• Broken wire to the temperature sensor

Reset the error!

Message

Value

Description

Action Instruction

Error! EEPROM Defective

21

After resetting, operation is still possible (without saving to the EEPROM).

⚙️

Use our
Repair Service!

Message

Value

Description

Action Instruction

Error! External Input

31

Triggered when a digital input is programmed as an external error input and is activated.

Reset the error!

Message

Value

Description

Action Instruction

Error! Encoder 1

32

Cable break at the encoder on encoder interface 1. Encoder temperature is too high. Speed is too high. Encoder signals are outside the specification. Encoder has an internal defect.

Reset the error!

Message

Value

Description

Action Instruction

Error! Encoder 2

34

Cable break at the encoder on encoder interface 2. Encoder temperature is too high. Speed is too high. Encoder signals are outside the specification. Encoder has an internal defect.

Reset the error!

Message

<极>Value

Description

Action Instruction

Error! Encoder Change

35

Operation of a synchronous motor with intelligent interface:

• Encoder not connected when switching on

• Encoder has been changed

This error can only be reset by writing to ec.0.

Reset the error!

Message

Value

Description

Action Instruction

Error! Encoder Interface

52

An encoder interface with an invalid identifier was detected.

⚙️

Use our Repair Service!

Message

Value

Description

Action Instruction

Error! New Encoder Identification

59

The encoder interface identifier has changed and must be confirmed via ec.0 or ec.10.

Reset the error!

Message

Value

Description

Action Instruction

Error! NPN/PNP Switching

53

Hardware error in NPN/PNP switching or input defective.

☎️

Contact us at 05262 99104!

Message

Value

Description

Action Instruction

Error! MFC Not Booted

57

MFC not booted.

☎️

Contact us at
05262 99104!

Message

Value

Description

Action Instruction

Error! Charging Circuit

15

The charging shunt relay is not engaged. This occurs briefly during the startup phase but must reset itself immediately. If the error persists, the following causes may be relevant:

• Charging shunt defective

• Incorrect or insufficient input voltage

• High losses in the supply line

• Braking resistor incorrectly connected or defective

• Braking module defective

☎️

Contact us at
05262 99104!

Message

Value

Description

Action Instruction

Motor Temperature Back to Normal

11

The motor temperature switch or PTC at terminals T1/T2 is back within the normal operating range. The error can now be reset.

Reset the error!

Message

Value

Description

Action Instruction

Heat Sink Temperature Back to Normal

36

The temperature of the heat sink is back within the permissible operating range. The error can be reset.

<极 style="text-align: center;">✅

Reset the error!

Message

Value

Description

Action Instruction

Internal Temperature Back to Normal

7

No more internal over-temperature (E.OHI). The internal temperature has dropped by at least 3°C, and the error can be reset.

Reset the error!

Message

Value

Description

Action Instruction

Overload Cleared

17

No more overload; the OL counter has reached 0%. After an E.OL error, a cooling phase must be waited out. This message appears after the cooling phase is complete. The error can be reset. The converter must remain switched on during the cooling phase.

Reset the error!

Message

Value

Description

Action Instruction

Overload in Standstill Cleared

20

The cooling time has elapsed, and the error can be reset.

Reset the error!

Message

Value

Description

Action Instruction

Error! Overcurrent

4

Occurs when the specified peak current is exceeded.

Causes:

• Acceleration ramps too short

• Load too large with acceleration stop and constant current limit disabled

• Short circuit at the output

• Ground fault

• Deceleration ramp too short

• Motor cable too long

• EMC issues

• DC braking active at high power levels (see 6.9.3)

☎️

Contact us at
05262 99104!

Message

Value

Description

Action Instruction

Error! Heat Sink Overheating

8

The temperature of the heat sink is too high. The error can only be reset at E.nOH.

Causes:

• Insufficient airflow at the heat sink (dirty)

• Ambient temperature too high

• Fan blocked

Reset the error!

Message

Value

Description

Action Instruction

Error! Motor Protection Function

30

The electronic motor protection relay has tripped.

Reset the error!

Message

Value

Description

Action Instruction

Error! Internal Overheating

6

Internal temperature too high. The error can only be reset at E.nOHI when the internal temperature has dropped by at least 3°C.

Reset the error!

Message

Value

Description

Action Instruction

Error! Overload (Ixt)

16

Overload error can only be reset at E.nOL when the OL counter has returned to 0%.

Occurs when excessive load is applied for longer than the permissible time (see technical data).

Causes:

• Poor controller tuning

• Mechanical fault or overload in the application

• Incorrectly sized converter

• Motor incorrectly connected

• Encoder defective

☎️

Contact us at
05262 99104!

Message

Value

Description

Action Instruction

Error! Overload in Standstill

19

Occurs when the standstill current is exceeded (see technical data and overload curves). The error can only be reset after the cooling time has elapsed and E.nOL2 is displayed.

Reset the error!

Message

Value

Description

Action Instruction

Error! Overvoltage

1

DC link voltage too high; occurs when the DC link voltage exceeds the permissible value.

Causes:

• Poor controller tuning (overshoot)

• Input voltage too high

• Interference on the input

• Deceleration ramp too short

• Braking resistor defective or too small

☎️

Contact us at
05262 99104!

Message

Value

Description

Action Instruction

Error! Speed Exceeded

58

The speed is outside the defined limits.

Reset the error!

Message

Value

Description

Action Instruction

Error! PFC

33

Error in the power factor correction.

⚙️

Use our
Repair Service!

Message

Value

Description

Action Instruction

Error! Right Limit Switch

46

The drive has reached the right limit switch. In response, "Error, restart after reset" has been programmed (see Chapter 6.7 "Response to Errors or Warnings").

Reset the error!

Message

Value

Description

Action Instruction

Error! Left Limit Switch

47

The drive has reached the left limit switch. In response, "Error, restart after reset" has been programmed (see Chapter 6.7 "Response to Errors or Warnings").

Reset the error!

12

Message

Value

Description

Action Instruction

Error! Power Unit

General power unit error (e.g., fan).

⚙️

Use our
Repair Service!

Message

Value

Description

Action Instruction

Error! L-Part Identification Invalid

49

During the initialization phase, the power unit was either not detected or detected as invalid.

⚙️

Use our
Repair Service!

Message

Value

Description

Action Required

Error! Power module changed

50

The power module identification has changed; if the installed module is valid, the error can be reset by writing to SY.3. If the value displayed in SY.3 is written, only the parameters dependent on the power module are re-initialized. If any other value is written, default values are loaded. On some devices, a power-on reset is required after writing SY.3.

☎️

Contact us at
05262 99104 !

Message

Value

Description

Action Instruction

Error! L-Part Communication

22

Parameter value could not be written to the power unit. Acknowledgment from the power unit is not OK.

Reset the error!

Message

Value

Description

Action Instruction

Error! Power Section Coding

14

Error: Software versions of power section and control card are different. Error cannot be reset (only with F5-G in B housing)

⚙️

Use our repair service!

Message

Value

Description

Action Instruction

Error! Bus Synchronization

23

Synchronization via the Sercos bus is not possible. As a reaction, "Error, restart after reset" was programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Error! Parameter Set Selection

39

An attempt was made to select a locked parameter set. The reaction "Error, restart after reset" was programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Required

Error! Right software limit switch

44

The target position lies outside the limit defined by the right software limit switch. The programmed reaction is “Error, restart after reset” (see Chapter 6.7 “Reaction to errors or warning messages”).

Reset the error!

Message

Value

Description

Action Instruction

Error! Software Limit Switch Left

45

The target position is outside the limit defined by the left software limit switch. The reaction "Error, restart after reset" was programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Error! Undervoltage

2

Voltage in the DC link too low. Occurs when the DC link voltage drops below the permissible value.

Causes:

• Input voltage too low or unstable

• Inverter power too low

• Voltage losses due to incorrect wiring

• Supply voltage drops due to generator / transformer in the case of very short ramps

• With F5-G in B housing, E.UP is also displayed if there is no communication between the power section and the control card.

• Jump factor (Pn.56) too small (see 6.9.20)

• if a digital input is programmed as an external error input with error message E.UP (Pn.65).

☎️

Contact us at 05262 99104 !

Message

Value

Description

Action Instruction

Error! Mains Phase

3

Input voltage phase missing (Ripple detect)

Reset the error!

KEB warning messages

Message

Value

Description

Action Instruction

Warning! Watchdog

93

Watchdog for communication between operator – PC or operator – inverter has responded. The reaction to this warning can be programmed.

Reset the error!

Message

Value

Description

Action Instruction

Warning! Motor Overheating

96

The motor temperature has exceeded an adjustable warning level. The shutdown time is started. The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings"). This warning can only be generated with a special power section.

👍

No action required

Message

Value

Description

Action Instruction

Warning! External Input

90

This warning is triggered via an external input. The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Clearance! Motor Overheating

91

The motor temperature is below the set warning level again. The shutdown time is stopped.

👍

No action required

Message

Value

Description

Action Instruction

Clearance! Overtemperature Heat Sink

88

The heat sink temperature is below the warning level again.

👍

No action required

Message

Value

Description

Action Instruction

Clearance! Overtemperature Interior

92

The temperature inside the inverter is below the warning threshold again.

👍

No action required

Message

Value

Description

Action Instruction

Clearance! Overload

98

The overload counter (OL counter) has reached 0%, the "Overload" warning can be reset.

Reset the error!

Message

Value

Description

Action Instruction

Clearance! Overload at Standstill

101

The cooling time after "Warning! Overload at standstill" has expired. The warning message can be reset.

Reset the error!

Message

Value

Description

Action Instruction

Warning! Overtemperature Heat Sink

89

A level can be set at which this warning is issued when exceeded. Furthermore, a reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Warning! Motor Protection Function

97

The electronic motor protection function has been triggered. The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Warning! Overtemperature Interior

87

The temperature inside the inverter is above the permissible level. The shutdown time has been started. The set reaction to the warning message is carried out (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Warning! Overload

99

A level between 0 and 100% of the load counter can be set, at which the warning is issued when exceeded. The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Warning! Overload at Standstill

100

The warning is issued when the standstill current is exceeded (see technical data and overload curves). The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings"). The warning can only be reset when the cooling time has expired and A.nOL2 is displayed.

Reset the error!

Message

Value

Description

Action Instruction

Warning! Limit Switch Clockwise

94

The drive has moved onto the right limit switch. The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Warning! Limit Switch Counterclockwise

95

Warning! Limit Switch Counterclockwise

Reset the error!

Message

Value

Description

Action Instruction

Warning! Bus Synchronization

103

Synchronization via the Sercos bus is not possible. The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Warning! Parameter Set Selection

102

An attempt was made to select a locked parameter set. The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Warning! Software Limit Switch Right

104

The target position is outside the limit defined by the right software limit switch. The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

Message

Value

Description

Action Instruction

Warning! Software Limit Switch Left

105

The target position is outside the limit defined by the left software limit switch. The reaction to this warning can be programmed (see chapter 6.7 "Reaction to errors or warnings").

Reset the error!

KEB status messages

Message

Value

Description

Action Instruction

Motor De-energization

76

Output stages blocked for motor de-energization

👍

No action required

Message

Value

Description

Action Instruction

Close Brake

85

Brake control

👍

No action required

Message

Value

Description

Action Instruction

Open Brake

86

Brake control (see chapter 6.9)

👍

No action required

Message

Value

Description

Action Instruction

Drive Data Acquisition

82

The message is output during the acquisition of the motor stator resistance.

👍

No action required

Message

Value

Description

Action Instruction

DC Braking

75

Motor is braked by a DC voltage at the output.

👍

No action required

Message

Value

Description

Action Instruction

Modulation Off After DC Braking

77

Modulation is switched off after DC braking (see chapter 6.9 "DC Braking")

👍

No action required

Message

Value

Description

Action Instruction

Acceleration Clockwise

64

Acceleration is performed with the set ramp times with clockwise rotation.

👍

No action required

Message

Value

Description

Action Instruction

Constant Speed Clockwise

66

The acceleration / deceleration phase has ended and the drive is running at a constant speed / frequency with clockwise rotation.

👍

No action required

Message

Value

Description

Action Instruction

Deceleration Clockwise

65

It stops with the set ramp times with clockwise rotation direction.

👍

No action required

Message

Value

Description

Action Instruction

Hardware Current Limit

80

The message is output when the output current reaches the hardware current limit.

👍

No action required

Message

Value

Description

Action Instruction

Data Invalid

-

The set parameter address is not valid / permissible for this parameter value.

👍

No action required

Message

Value

Description

Action Instruction

Acceleration Stop

72

This message is displayed if the load is limited to the set load level during acceleration.

👍

No action required

Message

Value

Description

Action Instruction

Deceleration Stop

73

This message is displayed if, during deceleration, the load is limited to the set load level or the DC link voltage to the set voltage level.

👍

No action required

Message

Value

Description

Action Instruction

Standstill (Mod. off)

70

No direction is specified, the modulation is switched off.

👍

No action required

Message

Value

Description

Action Instruction

Power Section Not Ready

13

The power section is not ready or is not recognized by the control system.

👍

No action required

Message

Value

Description

Action Instruction

No Controller Enable

0

Controller enable (terminal ST) is not switched.

👍

No action required

Currently, there is no information about this status message.

Message

Value

Description

Action Instruction

Modulation Off After Mains Failure

84

Modulation was switched off after the mains failure function.

👍

No action required

Message

Value

Description

Action Instruction

Position Not Reachable

123

The specified position is not reachable within the specified ramps. It can be programmed whether the positioning is canceled.

👍

No action required

Message

Value

Description

Action Instruction

Mains Failure Function Active

78

Depending on the programming of the function (see chapter 6.9 "Mains Failure Function"), the inverter runs independently or only after a reset when the mains returns.

👍

No action required

Message

Value

Description

Action Instruction

Positioning

83

The message is output when the positioning function (F5-G) is active.

👍

No action required

Message

Value

Description

Action Instruction

Acceleration Counterclockwise

67

It accelerates with the set ramp times with counterclockwise rotation.

👍

No action required

Message

Value

Description

Action Instruction

Constant Speed Counterclockwise

69

The acceleration / deceleration phase has ended and the drive is running at a constant speed / frequency with counterclockwise rotation.

👍

No action required

Message

Value

Description

Action Instruction

Deceleration Counterclockwise

68

It stops with the set ramp times with counterclockwise rotation.

👍

No action required

Message

Value

Description

Action Instruction

Ready for Positioning

121

The drive reports that it is ready to start the positioning process.

👍

No action required

Message

Value

Description

Action Instruction

Current Limit Reached

71

This message is displayed if the load is limited to the set current limit during constant speed.

👍

No action required

Message

Value

Description

Action Instruction

Homing Active

81

The message is output during homing.

👍

No action required

Message

Value

Description

Action Instruction

Speed Search

74

Speed search function active; this means that the inverter is trying to synchronize with a coasting motor.

👍

No action required

Message

Value

Description

Action Instruction

Quick Stop Active

79

The message is output when the quick stop function is activated as a reaction to a warning message.

👍

No action required

Customer Service

If you have any questions about the error codes, error diagnostics or your inverter, please contact our service hotline at:

05262 99104
Mon-Fri, 07:00 to 16:00

KEB Repair Service

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