ASCII Objekt-Reference 

Home 

Display 

Meaning 

Possible causes 

Measures/ explanation 

HMI message:
Communication fault 

Wrong cable used 

Use null-modem cable 

Cable plugged into wrong position on servo amplifier or PC 

Plug cable into the correct sockets on the servo amplifier and PC 

Wrong PC interface selected 

Select correct interface 

F01* 

Heat Sink Temperature 

Heat sink temperature too high 

Max. value adjusted by manufacturer to 80°C. Decrease ambient temperature. 

Amplifier contaminated 

Check / blow out ventilation slots. Use air filters. 

Fan defective / non-contacted 

Check the air flow / fan noise; if defective, send the amplifier to the manufacturer for repair. 

Value MAXTEMPH  too small 

Range 20 .. 85°C, default 80°C 

No air flow due to restricted installation 

Conversion of the switchgear cabinet. Install an air-conditioning unit. 

Hardware faulty 

Return the servo amplifier to manufacturer for repair 

F02* 

Overvoltage in DC Bus Link 

Max. value depends on the set mains voltage 

Regen energy too high 

"n02" displayed beforehand. Possibly use an external braking resistor or, in the case of multiple amplifiers, connect DC links. 

Mains voltage set too low 

Set the mains voltage correctly on the Basic Setup screen page 

Regen resistor configured incorrect 

Set the details for the internal or external braking resistor correctly on the Basic Setup screen page 

Regen resistor wired incorrect 

Check the wiring (see product manual). Internal braking resistor: Bridge must be present on the connector! External braking resistor: Bridge must be removed from the connector! 

Fuse in regen resistor defect 

Replace fuse 

Braking ramps too short 

Extend the braking ramps on the Speed screen page 

DC Bus not linked to other amplifiers 

In the case of multiple amplifiers from the same family, connect the DC links (see product manual) 

F03* 

Following error message of the position controller (in  OPMODE 5 or 6 only) 

Axis is mechanically tight or blocked 

Check the mechanical system 

Inadequate torque for the ramps set 

Travel along flatter ramps (ACC, DEC) 

Ramps in the speed controller are longer than ramps in the position controller 

Lower the acceleration ramp (ACC) and braking ramp (DEC) in the speed controller 

Amplifications set too low. Axis is too undynamic 

Adjust the amplification. Speed and possibly Position screen pages 

Amplifications set too high. Axis oscillates. 

Adjust the amplification. Speed and possibly Position,  screen pages, insert a filter 

IPEAK  (maximum current) too low 

Enlarge the following error window (Position Data  screen page) or use a larger amplifier / motor, increase  IPEAK . 

F04 

Feedback 

Short circuit, short to ground 

Check the feedback cable 

Encoder defective 

Exchange encoder / motor 

Contacts in connector not OK 

Check contacts 

Incorrect feedback set 

See FBTYPE 

Incorrect / defective feedback cable 

Check cable (particularly critical in the cable trailing device) 

Incompatible feedback 

See FBTYPE 

Poorly shielded cables 

Use suitable cables (see product manual) 

Feedback cable is too low 

Adhere to the max. permissible cable length (see product manual) 

Coupling fault signals 

Check shielding, ensure compliance with the minimum spacing between the power cables and the signal connections (see product manual) 

F05* 

Undervoltage 

Mains contactor not connected 

Wiring / Emergency stop / Control logic / ... 

Switch-on sequence not complied with 

First of all switch on the power contactor which is connected via the BTB contact. Then switch the enable signal on approx. 0.5s later 

Emergency stop has cut off the mains voltage 

Operator information 

VBUSMIN parameter set too low. 

Adjustment of the parameter, e.g. in 48VDC applications. 

The monitor has to be switched off in some applications with UVLTMODE 

Example: Positioning the axis in the event of mains failure. 

F06 

Motor Temperature 

Motor overheating 

Incorrect motor parameters / Poor cooling 

Defective temperature sensor 

Measure the sensor resistance.
Switch:
-low temperature: switch closed
-high temperature: switch open.
PTC thermistor:
-low temperature: low resistance
-high temperature: high resistance 

Connector on the feedback unit loose or feedback cable interrupted 

Connector / cable control 

Motor without a temperature sensor 

Installation of a bridge in the connector 

Cutoff threshold for the temperature sensor is set too low 

Set the MAXTEMPM  parameter (to the cutoff threshold, see parameter description) 

Amplifier defective 

Bridge the temperature contact for testing at the resolver or SinCos interface 

Unused thermostatic switch / element 

Contact Customer Support 

F07 

Internal Voltages faulty 

External short circuit or overload on a power supply voltage 

Disconnect all the connectors apart from 24V and check whether the error occurs again when you switch on 

24V undershot for amplifier logic 

Adhere to the tolerance criteria for the 24V voltage supply (see product manual) 

Motor brake with excess current consumption. 

Adhere to the maximum motor brake current (see product manual); supply brake with external voltage. 

Hardware faulty 

Return the servo amplifier to manufacturer for repair 

Feedback system with excess current consumption. 

Contact Customer Support 

F08* 

Overspeed 

Speed in excess of permissible limit 

Check the VOSPD  (limit speed) and raise it, if necessary. 

Speed in excess of permissible limit 

Reduce overswing by assigning amplification parameters 

Feedback cable is defective 

(Possibly check by shaking the cable) Replace the cable 

VLIM  too low 

When a new motor is loaded, quicker motors with a max. of only 3,000 rpm are also entered. The end speed and overspeed have to be adapted for higher speeds. 

Motor vibrates. 

Parameter adaptation 

Tables of motion tasks with a time base which is too low. 

Increase target times or use a motor with a higher nominal speed 

Feedback on the incorrect motor inserted. 

Check and correct assignment 

Motor phases inverted 

Check the pin assignment 

Feedback incorrectly set 

Set angle offset correctly (MPHASE) 

F09 

EEPROM Checksum Error 

Amplifier switched off during the storage process 

Re-enter parameters and save them 

Manually changed parameter record loaded with lower-case lettering. 

Change the lower-case lettering to upper case 

Hardware faulty 

Return the servo amplifier to manufacturer for repair 

F10 

Reserve 

- 

- 

F11 

Cable brake motor brake 

Short circuit, short to ground 

Replace the cable 

Motor cable without brake wires 

Connect the correct motor cable 

Motor without a brake 

Set MBRAKE to 0 

Motor brake current consumption too low. 

Raise current consumption to a minimum of 150mA (e.g. through parallel resistors). 

Hardware faulty 

Return the servo amplifier to manufacturer for repair 

F12 

Motor Phase 

Shield on the motor cable is badly attached or missing 

Check the shield connections 

Strong external EMC interference 

Additional design of motor shields on the mounting plate of the switchgear cabinet. 

Motor cable capacity is too high 

Use a motor choke / Shorten the cable /  Use cables 

Installed motor contactor does not switch on time. 

Check contactor 

Installed motor contactor has burnt contacts. 

Check contactor 

Hardware faulty 

Return the servo amplifier to manufacturer for repair 

Motor connector not plugged in the servo amplifier or motor. 

Check connector 

F13* 

Ambient Temperature too high 

Ambient Temperature too high 

Use a cooling device 

Detection faulty (usually combined with F17) 

Return the servo amplifier to manufacturer for repair 

Cutoff threshold is too low 

Increase TEMPE 

Switchgear cabinet is too warm. 

Use a cooling device 

F14 

Output Stage 

Short circuit in the motor cable 

Replace motor cable 

Output stage faulty 

Return the servo amplifier to manufacturer for repair 

Insulation fault in the motor 

Conduct measurements with an ohmmeter between the motor phases: must be symmetrical. Measure the motor phases to the PE; it must be unending. If there is a high-voltage tester available, use it to measure the motor phases to PE. 

Motor contactor does not switch on time. 

Check the switching sequence 

Motor contactor has burnt contacts. 

Replace motor contactor. 

Short circuit in the electric circuit for the external braking resistor 

Check, rectify short circuit 

F15 

I²t maximum value exceeded 

Drive is mechanically tight 

Check mechanical system, use a larger amplifier/motor 

Sine² ramps 

Extend the acceleration/braking ramps (ACC, DEC) 

Incorrect design 

Contact Customer Support 

Incorrect phase angle between feedback and magnet elements in the motor.  

Correct the MPHASE , possibly reset with ZERO. 

Ramps are too steep 

Extend the acceleration/braking ramps (ACC, DEC) 

Intervals are too short 

Extend the recovery intervals between motion tasks (Motion Tasks screen page) 

Vibration in the current controller 

Adjust the amplification of the MLGQ and the  KTN reset time 

Motor has an inter-turn fault (only in the case of a partial short circuit) 

Replace motor 

F16* 

Mains BTB - 1, 2 or 3 phases of the in-feed missing 

Three-phase operation is set in the case of a single-phase in-feed. 

check setting on screen page Basic Setup 

Phases missing from in-feed. 

Check wiring/fuses/main contactor 

Special settings are required for a DC in-feed. 

Contact Customer Support 

Amplifier enabled even though they was no mains voltage 

Amplifier only enabled when the mains voltage is switched on (comply with switch-on sequence) 

F17 

A/D converter error 

Strong electromagnetic interference 

Reduce EMC interference; check shielding and earthing. Mount devices which generate electrical fields further away from the amplifier. 

Hardware faulty 

Return the servo amplifier to manufacturer for repair 

F18 

Regen Circuit 

Regen resistor extern selected, but the internal one is used. 

Check setting on screen page Basic Setup 

Destroyed regen transistor 

Return the servo amplifier to manufacturer for repair 

F19* 

DC Bus Link
(can be switched off for operation with two phases mains) 

There is no voltage at the power terminals. 

Check and switch on power supply 

Voltage level is incorrectly configured. 

Adapt VBUSMIN 

Excessive load on the DC link during acceleration in combination with a soft voltage source (isolation transformer) 

Adapt parameters or hardware 

F20 

Slot Error 

Hardware error and the expansion card 

In the case of expansion card I/O-14/08, check the card's external power supply unit 

Incorrect PROFIBUS card 

Contact Customer Support 

Firmware does not support the card which is inserted. 

Contact Customer Support 

Card is not inserted correctly 

Remove the card and insert a new one and tighten it, following the instructions in the product manual. 

Power consumption of the plug-in card is too high. 

Contact Customer Support 

F21 

Handling Error 

Software error on the expansion card 

Contact Customer Support 

Plug-in card not permitted 

Contact Customer Support 

F22 

Reserved 

- 

- 

F23 

CAN Bus 

Severe CAN bus communication error. 

Check CAN cable and controller 

F24 

Warning 

Warning is displayed as fault 

With the WMASK parameter you can read out which warning(s) are evaluated as errors. On the basis of this information, refer to the list of warning messages. The LASTWMASK parameter indicates which warning last led to F24. 

F25 

Commutation error (motor may have oversped) Power vector and motion are in reverse. 

Wiring error in motor phases 

Test motor cable fully – Adapt DIR 

Wiring error on feedback cable 

Check direction of rotation in the monitor window, test feedback cable fully – Adapt DIR 

Internal clearance / oscillation of the mechanical system 

Examine mechanical system and align it, if necessary 

Monitor is too sensitive 

Raise VCOMM (VCOMM  = MSPEED means minimum sensitivity) 

Motor cable / feedback cable from another motor plugged in. 

Check and correct amplifier-motor assignment. 

Offset too high 

Check resolver pole number (MRESPOLES), motor pole number (MPOLES) and offset (MPHASE) 

Wake&Shake failed 

Perform Wake&Shake 

F26 

Limit switch
Homing error 

Hardware Limit Switch reached (defined by REFLS) 

Cable brake (limit switches) 

Check cable 

Limit switches connected do not belong to the axis. 

Check and correct limit switch-axis assignment. 

No limit switches connected. 

Disable input functions (Digital I/O screen page) 

Limit switches inverted. 

Assign PSTOP and NSTOP correctly to the inputs (Digital I/O screen page) 

F27 

AS error 

The  AS-enable was switched at the same time as or later than the amplifier-enable. 

Consider Switch-On sequence (see product manual) 

Cable fault (AS wiring) 

Check wiring, measure cable-resistance. 

F28 

Fieldbus, ext. trajectory 

"External trajectory" error is generated if the setpoint jump exceeds the maximum permissible value when the external position trajectory is specified. 

Adaptation of the specified values (VLIM / PVMAX) 

EtherCAT: The "synchronization" error is generated if the drive cannot be synchronized during phase ramp-up or if the drive loses its synchronization in EtherCAT "Operational" state. 

Check EtherCat system. 

F29 

Fieldbus not synchronized 

Timing error 

Communication problem by the controller 

Power supply 

External power supply for an expansion card missed. 

Expansion card not compatible 

Contact Customer Support 

F30 

Emergency Stop Timeout 

Default 5.000ms 

Motor doesn't stop in the set time. 

Brake ramp too long 

Decrease DECSTOP 

Peak current set too small 

Increase IPEAK 

Brake time too short 

Increase EMRGTO 

Amplifier too small 

Select servo amplifier with higher rated/peak current 

F31 

Error in Macro Program 

Endless loop in macro program 

Check macro program 

Overly intricate calculations in the quick tasks. 

Check program. Tip: Always use "Debug on" for tests. 

F32 

System error, System software doesn't work correctly 

Processor overloaded 

Too many stations in the network/Baud rate too high/Functions too complex (PLC) 

Hardware faulty 

Return the servo amplifier to manufacturer for repair 

Display 

Meaning 

Possible causes 

Measures/ explanation 

n01 

I²t treshold exceeds the set limit value I2TLIM. 

Mechanical system is tight 

Check the mechanical system 

Amplifier dimensions too low 

Use an amplifier with a higher current 

Motor dimensions too low 

Use a motor with a higher current 

Driving profile is too aggressive 

Define recovery times 

n02 

Brake power exceeds the set limit value PBALMAX. 

Incorrect brake power set 

Check setting 

Internal brake resistance too low 

Use external brake resistance, extend braking ramps (DEC / DECSTOP ) 

n03 

Following error exceeds the set limit value PEMAX. 

Mechanical system is tight 

Check the mechanical system 

Amplifier dimensions too low 

Use an amplifier with a higher current 

Driving profile is too aggressive 

Define recovery times, extend ramps 

Following error set too low 

Check setting 

n04 

Fieldbus communication monitor has responded (EXTWD). 

During commissioning: no fieldbus connected 

Disable watchdog temporarily (EXTWD = 0) 

In operation: communication problem 

Check bus installation 

n05 

One of the three mains phases is missing 

Check the mains connection, fuses and mains contactor 

n06 

Position setting for software limit switch 1 (SWE1 ) has been undershot 

Axis has been moved beyond the position which has been configured as the end position 

Check the position of the axis and setting of the software limit switch 

n07 

Position setting for software limit switch 2 (SWE2) has been exceeded 

Axis has been moved beyond the position which has been configured as the end position 

Check the position of the axis and setting of the software limit switch 

n08 

Defective motion task 

Commenced motion task does not exist (checksum is defective) 

Create a new motion task 

Target position lies outside the permissible range 

Check software limit switches and target positions 

Defective acceleration values 

Check units and numerical values 

OPMODE does not support the function 

Set correct OPMODE 

n09 

No reference point 

No reference point set when a motion task is started. 

Perform homing or set reference point 

n10 

Hardware Limit Switch PSTOP 

Positive limit switch has responded 

Move the axis in a negative direction from the limit switch 

Limit switch not connected 

Change the parameterization of digital I/Os or connect the limit switch 

Limit switch sensor has incorrect logic. 

Insert break contacts as limit switches (instead of make contacts). 

n11 

Hardware Limit Switch NSTOP 

Negative limit switch has responded 

Move the axis in a positive direction from the limit switch 

Limit switch not connected 

Change the parameterization of digital I/Os or connect the limit switch 

Limit switch sensor has incorrect logic. 

Insert break contacts as limit switches (instead of make contacts). 

n12 

Motor default values loaded 

Motor numbers stored in the encoder and amplifier do not match the parameters that have been set 

SAVE motor number to the EEPROM and with HSAVE to the encoder. 

n13 

Expansion card 

24V supply for the I/O expansion card missed 

Check wiring and 24V power supply 

n14 

SinCos-Feedback 

SinCos commutation (wake&shake) not completed 

ENABLE the amplifier 

n16 

Summarized Warning 

Summarized warning for n17 to n31 

See warning # 

n17 

Feldbus Sync 

CAN sync is activated, but is not sent synchronously from the controller, if at all. 

Check fieldbus settings 

n18 

Multiturn overflow 

More than +/-2048 revolutions counted with the multiturn encoder connected 

Ignore or disable monitoring with DRVCNFG Bit7=1 

Move motor to encode position 0 prior to installation 

n19 

Motion task ramps have been limited 

Permissible value range exceeded by the process block data 

Check the process block data 

n20 

Invalid motion task 

Check the data from the last process block started. Also determine the process block number with MOVE. 

n21 

Warning by PLC Program 

Only in the macro program in the servo amplifier 

Application-specific 

n22 

Max. motor temperature reached 

Alarm threshold setting exceeded, motor overloaded 

Check the motor temperature. 

Mechanical system is tight/blocked 

Check the mechanical system 

n32 

Firmware Beta Version 

For testing reasons only 

No warranty by the manufacturer for error free functionality 

Problem 

Possible causes 

Measures 

Motor does not rotate 

Servo amplifier not enabled 

Apply ENABLE signal 

Software enable not set 

Set software enable 

Break in setpoint cable 

Check setpoint cable 

Motor phases swapped 

Correct motor phase sequence 

Brake not released 

Check brake control 

Drive is mechanically blocked 

Check mechanism 

Motor pole no. set incorrectly 

Set motor pole no. 

Feedback set up incorrectly 

Set up feedback correctly 

Motor oscillates 

Gain is too high (speed controller) 

Reduce Kp~GV (speed controller) 

Feedback cable shielding broken 

Replace feedback cable 

AGND not wired up 

Join AGND to CNC-GND 

Drive too soft 

Kp~GV  (speed controller) too low 

Increase Kp~GV (speed controller) 

Tn~GVTN (speed controller) too high 

Use motor default value for Tn~GVTN (speed controller) 

GVT2  too high 

Reduce GVT2 

Drive runs roughly 

Kp~GV (speed controller) too high 

Reduce Kp~GV (speed controller) 

Tn~GVTN (speed controller) too low 

Use motor default value for Tn~GVTN (speed controller) 

GVT2  too low 

Increase GVT2 

Axis drifts at
setpoint = 0V 

Offset not correctly adjusted for analog setpoint provision 

Adjust offset (analog I/O) 

AGND not joined to the controller-GND of the controls 

Join AGND and controller-GND