SEW-EURODRIVE MOVIDRIVE B Series Manual

P6_: Terminal allocation (programming of digital input/output functions).

P7_: Control functions (boost function, brake control, speed jump, master-slave).

P8_: Equipment functions (factory settings, parameter lock, serial communication, fault response, automatic reset).

P9_：IPOSplus ®  Parameters (reference operation, positioning, software limit, modulus function).

Fault diagnosis and maintenance

7.1 Fault Display and Storage

The 7-segment code displays a fault code (flashing), such as "F01" overcurrent. The fault memory P080-P084 stores the last 5 faults and their current operating data (I/O status, temperature, speed, current, DC bus voltage, operating hours, etc.).

7.2 Typical fault codes

Possible causes and countermeasures for fault code name response

01 Immediately disconnect the output short circuit, motor overload, and output stage damage due to overcurrent, eliminate the short circuit, replace the motor with a smaller one, and contact SEW

Immediately disconnect the 04 brake chopper. The regenerative power is too high, the brake resistor is open and the deceleration slope is prolonged. Check the resistance wiring

07 DC bus overvoltage immediately disconnected, deceleration too short, brake resistor fault extends slope, check resistance

Immediately disconnect the overload, phase loss, and encoder reverse connection for speed monitoring in 08. Check the load and encoder wiring

Immediately disconnect the 14 encoder, check for poor cable shielding, broken wires, and damaged encoder for shielding and wiring

31 TF/TH triggers programmable motor overheating, TF is not connected to cooling motor, check connection or short circuit

42 hysteresis error programmable encoder reverse connection, slope too short, position loop P too small. Check encoder polarity, extend slope, and increase P gain

84 motor protection emergency stop motor thermal model overload reduces load, extends slope

7.3 Reset Method

Power off and restart (main contactor disconnected for ≥ 10 seconds).

By programming the digital input as' Reset '.

MOVITOOLS ®  Manual reset (P840=YES).

Press the<E>key on DBG60B.

Automatic reset (P841=YES, up to 5 times, requires setting the restart time P842). Attention: Automatic reset is strictly prohibited for dangerous applications such as lifting.

Project planning and selection suggestions

8.1 Selection of driving characteristics

The SEW Workbench project planning software supports complete calculations from applications to gearboxes, motors, and frequency converters. Selection process:

Select control mode based on positioning accuracy: no encoder VFC (± 360 °), VFC with encoder (± 5 ° -45 °), CFC/SERVO (<± 1 °).

Determine the type of motor (asynchronous or synchronous servo).

Select the size of the frequency converter based on continuous current and peak current.

Calculate the regenerative power and select the braking resistor (considering the cycle period CDF and overload factor).

Select line filters, output chokes, or output filters according to EMC requirements.

8.2 Example of brake resistor selection

Peak braking power P_peak=V_DC_stink ²/R_BW, where V_DC_stink has a maximum of 970 V (400/500 V equipment) or 485 V (230 V equipment). Determine the resistance model based on continuous braking power and CDF overload factor. The manual provides a detailed allocation table for BW series (flat, wound, grid) resistors.

8.3 Motor cable length

The maximum length of shielded cable is affected by PWM frequency: it can reach 400 m (size 0-6) at 4 kHz, and drops to 50 m at 16 kHz. The use of HF output filters is not limited by this, but voltage drop needs to be considered.