F280 Short circuit to earth
Cause:
Ground short in the DC bus or in the motor. This error is reported only in compact devices.
Remedy:
- Isolation test of the motor and motor power supply cable.
- Disconnect the power supply cable from the motor to the drive and turn on the drive and the power. If the error recurs, the drive should be exchanged.
F316 Softstart fault power supply unit
The DC bus cannot be loaded.
Cause:
1. Short-circuit in power supply or drive controller.
2. Too many additional capacitors have been connected.
3. Interrupt in DC bus choke (only applies to HVE)
Remedy:
1. Release connection to drive controllers and turn pwoer back on. If unit is defective, replace it.
2. Number of additional capacitor must be reduced or a separate loading device must be used.
3. DC bus choke and lines must be checked, possibly replaced.

F318 Heatsink overtemp. fault power supply unit
Power switched off due to excessive heatsink temperature.
Cause:
The unit is overloaded over ambient temperature is too high.
Remedy:
Check load and ambient temperature. Temperature pre-warning contact of the unit must be checked.

F320 Bleeder overload
Power off due to high bleeder load.
Cause:
1. In the HVR, too much regenerated drive energy even with power off.
2. In the HVE, continuous regenerated power or rotary drive energy is too high.
3. Unit is defective.
Remedy:
On 1: Reduce drive speed. Delay power off in the case of OFF or and emergency stop.
On 3: Replace unit.

F360 Overcurrent power supply unit
With HVR only!
Cause:
Short-circuit in power supply unit, drive controller, motor or a cable.
Remedy:
Disconnect power supply lines on the drive controller one at a time. Replace a unit if it is defective.

F369 +24V/+-15V/+5V fault power supply unit
Control voltage interference.
Cause:
1. Maximum permissible load has been exceeded
2. Short-circuit in wiring if control voltage is used outside of drive system.
3. Unit is defective.
Remedy:
On 1: Release bus connections to drive controller one after the other.
On 2: Release control voltage taps and check for short-circuits.
On 3: Replace unit.

F380 Short to ground power supply unit
Cause:
Ground short: in power supply unit in drive controller in motor or motor cable
Remedy:
Release connections to motor and power supply unit one at a time. Replace defective drive components.

F381 Mains failure
With HVR only !
Cause:
At least one phase of the power supply is missing.
Remedy:
Check mains fuses and replace, if necessary.

F382 Mains phase loss fault
With HVE only !
Cause:
At least one phase of the power supply is missing
Remedy:
Check mains fuses and replace, if necessary.

F383 Line voltage fault
With HVR only !
Cause:
Mains voltage exceeds permissible tolerance (3x 380 ... 480V, ± 10 %).
Remedy:
Check mains voltage, use matching transformer, if necessary.

F384 Connection error at power supply unit
With HVR only !
Cause:
Power and control voltage connects are not phase coincident.
Remedy:
Check connection voltage. Terminals X5/U and X8/1, X5/V and X8/2, X5/W and X8/3 may not conduct voltage to each other.

F385 Line frequency fault
With HVR only !
Cause:
Mains frequency exceeds permissible tolerance (± 2Hz).

F394 Checksum error power supply unit
With HVR only !
Cause:
Unit failure.
Remedy:
Replace unit.

F401 Double MST error shutdown
The master sync telegram was not received in the drive controller in two successive SERCOS cycles.
Cause:
1. Disruption in the LWL transmission line.
2. Too much attenuation in the light signal.
3. Malfunction in the SERCOS interface (general).
Remedy:
For 1. Check all LWL connections in the SERCOS ring.
For 2. Measure the attenuation in the LWL cable.
The maximum attenuation between TX and RX must not fall below 12.5 dB.
For 3. Exchange the SERCOS interface module in the drive controller.

F402 Double MDT error shutdown
The master data message frame (MDT) has not been received in the drive in two consecutive SERCOS cycles.
Causes:
1. Fault in the fiber optics transmission line.
2. Excessive damping of the light signals.
3. Malfunction in the SERCOS interface (general).
Remedy:
Ref. 1. Check all fiber optics connections in the SERCOS loop.
Ref. 2. Measure the damping in the fiber optics cable. The maximum damping between TX and RX may not be less than 12.5 dB.
Ref. 3. Replace the SERCOS interface module in the drive.

F403 Invalid Communication Phase Shutdown
An invalid communications phase was given by the SERCOS master module (phase > 4).
Cause:
Error in the SERCOS master module of the control system.
Remedy:
Consult the control system manufacturer.

F404 Error during Phase Progression
The prescribed order was not maintained during phase progression.
Cause:
Error in the SERCOS master module of the control system.
Remedy:
Consult the control system manufacturer.

F405 Error during Phase Regression
Switching back from a communication phase did not switch to phase 0.
Cause:
Malfunction in the SERCOS master module of the controller.
Remedy:
Contact the controller manufacturer.

F406 Phase Switching without Ready Signal
The SERCOS master attempted a phase switch without waiting for the drive controller's ready signal.
Cause:
Error in the SERCOS master module of the control system.
Remedy:
Consult the control system manufacturer.

F434 Emergency-Stop
Pressing the emergency stop switch has caused the drive to perform the emergency stop function that was selected in the P-0-0119, Best possible deceleration parameter. Setting bit 15 of S-0-0011, Class 1 diagnostics causes an error message to be issued to the controller.
Cause:
The emergency stop switch was pressed.
Remedy:
Eliminate the malfunction that has caused the emergency switch to be actuated, and clear the error.

F629 Positive Travel Limit exceeded
The drive received a command value which resulted in an axis position outside the positive travel range. The axis was brought to a standstill with the "Set velocity command value to zero" error response. Bit 2 of paramater P-0-0090, Travel limit parameter is set for "Exceeding travel range as an error," or exceeding the position limit began a drive control command (such as the drive-controlled homing procedure).
Cause:
S-0-0049, Positive position limit value exceeded.
Remedy:
1. Check S-0-0049, Positive position limit value.
2. Check the software limits of the control system.
3. Activate the axis after the error response.
Procedure:
· Clear the error.
· If the power supply was turned off, turn it back on.
· Move the axis into the permissible working range.
Note: Only command values which lead to the permissible working area will be accepted. All other command values will result in bringing the drive controller to a standstill again.

F630 Negative Travel Limit exceeded
The drive received a command value which resulted in an axis position outside the negative travel range. The axis was brought to a standstill with the "Set velocity command value to zero" error response. Bit 2 of paramater P-0-0090, Travel limit parameter is set for "Exceeding travel range as an error," or exceeding the position limit began a drive control command (such as the drive-controlled homing procedure).
Cause:
S-0-0050, Negative travel limit value exceeded.
Remedy:
1. Check S-0-0050, Negative travel limit value.
2. Check the software limits of the control system.
3. Activate the axis after the error response.
Procedure:
· Clear the error.
· If the power supply was turned off, turn it back on.
· Move the axis into the permissible working range.
Note: Only command values which lead to the permissible working area will be accepted. All other command values will result in bringing the drive controller to a standstill again.

F634 Emergency-Stop
Pressing the emergency stop switch has caused the drive to stop the drive by setting the velocity command value to zero. An error is reported in the S-0-0011, Class 1 diagnostics parameter.
Cause:
The emergency stop switch has been pressed.
Remedy:
Eliminate the malfunction that has caused the emergency switch to be actuated, and clear the error.

F643 Positive Travel Limit Switch detected
The positive travel limit switch was encountered. The axis was brought to a standstill with the "Set velocity command value to zero" error response. Bit 2 of parameter P-0-0090, Travel limit parameter is set for "Exceeding travel range as error," or exceeding the position limit began a drive control command (such as the drive-controlled homing procedure).
Cause:
The positive range limit switch is detected.
Remedy:
1. Reset the error.
2. Turn the power supply on again.
3. Move the axis into the permissible travel region.
Note: The drive will not accept command values which lead out of the permissible travel range. Entering these command values in the drive controller will result in this error.

F644 Negative Travel Limit Switch detected
The negative travel limit switch was encountered. The axis was brought to a standstill with the "Set velocity command value to zero" error response. Bit 2 of parameter P-0-0090, Travel limit parameter is set for "Exceeding travel range as error," or exceeding the position limit began a drive control command (such as the drive-controlled homing procedure).
Cause:
The negative travel limit switch was detected.
Remedy:
1. Reset the error.
2. Turn the power supply on again.
3. Move the axis into the permissible travel region.
Note: The drive will not accept command values which lead out of the permissible travel range. Entering these command values in the drive controller will result in this error.

F822 Motor Encoder Failure: Signal too small
The analog signals of an external measurement system are used for high resolution analysis of that measurement system. These are monitored according to two criteria:
1. The pointer length, which is calculated from the sine and cosine signals, must equal at least.> 1 V.
2. The maximum pointer length resulting from the sine and cosine signals must not exceed 11.8 V.
Se F242
Note: The error cannot be cleared in communications phase 4. Before clearing the error, switch to communications phase 2.
Remedy:
· Check the measurement system cable.
· Lay the feedback cable well away from the motor power cable. The cover must be placed over the drive controller (see drive controller project specifications.)
· Check the measurement system and exchange, if necessary.

F827 Drive interlock while drive activated
Cause:
The drive interlock was activated while controller enable was set. The drive controller switches to torque-free state immediately.
Remedy:
The drive interlock should not be activated when controller enable is set. Check the control system of the drive interlock input.

F860 Overcurrent: Short in power stage
The current in the power transistor bridge has exceeded the twofold value of the device peak current. The drive is immediately set to no torque. An optional blocking brake is applied immediately.
Cause:
1. Short-circuit in the motor cable.
2. Power stage of the drive controller is defective.
3. Parameter values of the current regulator do not comply.
Remedy:
Ref. 1. Check the motor cable for short-circuit
Ref. 2. Replace the drive controller.
Ref. 3. The current regulator parameters and the initial values from the feedback should not differ.

F861 Overcurrent: Short to ground
The phase current sum is monitored. Sum = 0 in normal mode. The ground-fault fuse responds if the current sum exceeds 0.5 x I N .
Cause:
1. Defective motor cable.
2. Ground fault in the motor.
Remedy:
Check motor cable and motor for ground fault; replace if necessary.

F869 +/-15Volt DC Error
The drive controller found a malfunction in the ± 15 V power supply.
Cause:
1. Defective control voltage bus cable.
2. Defective supply module.
Remedy:
For 1. Check the control voltage bus cable or plug connection and exchange if necessary.
For 2. Check supply module (see supply moduleinstructions for use).

F870 +24Volt DC Error
The drive controller requires a 24-V control voltage. The drive's torque is released immediately when the maximum permissible tolerance o  +20% is exceeded. An optional blocking brake is applied.
Causes:
1. Defective cable for the control voltages.
2. 24-V power supply overload.
3. Defective power supply unit.
4. Short-circuit in the emergency stop circuit.
Remedy:
Ref. 1. Check and, if necessary, replace the cable and connections of the control voltages.
Ref. 2. Check the 24-V power at the power supply unit.
Ref. 3. Check the power supply unit.
Ref. 4. Check the emergency stop circuit for a short-circuit.

F871 +10Volt DC Error
The power supply voltage for the current sensors has been disrupted.
Cause:
A defect in the drive controller.
Remedy:
Exchange the drive controller.

F878 Velocity Loop Error
If the difference between velocity command value and feedback value is greater than 10% of the maximum motor velocity while the velocity control loop is active, then the feedback velocity value must move in the direction of the command value. This error is generated if the feedback value does not come closer to the command value within 20 ms and the effective torque/force command value is at the limit (=P-0-4046, Active peak current).
Cause:
1. Motor cable is connected incorrectly.
2. Defective power section of the drive.
3. Defective feedback.
4. Parameters set incorrectly for velocity controller.
5. Parameters for acceleration or brake slope are too steep.
6. Effective peak current is too low.
Remedy:
For 1. Check motor cable connection.
For 2. Exchange the drive controller.
For 3. Exchange the motor.
For 4. Check the velocity controller according to the user instructions (see the velocity controller chapter).
For 5. Decrease the maximum acceleration in the control system or decrease P-0-1201, Ramp 1 pitch.

F879 Velocity limit S-0-0091 exceeded
In torque control, the actual velocity is monitored. This error is generated if the programmed velocity in the S-0-0091, Bipolar velocity limit value arameter is exceeded by the 1.125-fold value and/or a minimum of 100rpm (rotary motor) or 100 mm/min (linear motor).
Cause:
The torque command value was for too long a time greater than the load torque. This causes the actual speed to be increased up to the maximum possible motor speed.
Remedy:
Assign the correct torque command value to the required task. Reduce the S-0-0092, Bipolar torque/force limit value parameter value.