SEW MOVITRAC ® B frequency converter

1. Debugging through the FBG11B operation panel:

FBG11B provides intuitive 7-segment digital display and button operation. Debugging menu guides users to complete step by step:

Choose motor type: Supports SEW standard motors (DT/DV series) and non SEW motors. For SEW motors, their characteristic data has been pre-set; For non SEW motors, manual input of nameplate data such as rated voltage, current, power, speed, and power factor is required.

Select operating mode: Common modes include standard V/f control (suitable for situations with low dynamic requirements) and VFC control (with slip compensation, good dynamic performance, suitable for high torque, precise control or lifting applications). In VFC mode, DC braking or elevator specific functions can also be added.

Input power data: Set the actual power supply voltage.

Confirmation and Calculation: The system will automatically calculate internal parameters based on input data. For non SEW motors, a brief motor self-test may be required.

2. Parameter adjustment for special applications:

For secondary loads such as pumps, fans, or non SEW motors, the manual recommends specific parameter optimization, such as turning off automatic compensation and IxR compensation, and appropriately extending acceleration/deceleration time to avoid unstable operation or overcurrent protection.

3. Communication and networking debugging:

Bus communication such as RS-485, CANopen (SBus), or Profibus can be achieved through the optional communication module FSC11B or analog module FIO11B. During debugging, it is necessary to set the correct station address and baud rate, and configure the content of the process data word (PO/PI) reasonably, such as the set value (PO2), actual speed (PI1), etc. There are also corresponding debugging strategies for multi motor drive (mechanical coupling) and group drive (mechanical independence but parameter sharing).

Operation, Display, and Fault Diagnosis

Daily operations:

The frequency converter can be controlled through panel buttons or external terminals (such as clockwise/stop, counterclockwise/stop, enable). The set value can be provided through panel analog potentiometer, external analog input, fixed digital set value, or bus communication. The panel supports the "manual rated value adjustment" mode for easy on-site testing.

Status display:

The front-end LED of the device provides quick status indication. Green light indicates enable, red flash indicates overload, and yellow light indicates no enable or disable. The display screen of the operation panel (FBG11B/DBG60B) can provide more detailed information such as status, speed, current, fault codes, etc. Status word 1 can be read through the interface and includes status codes such as 0x0 (not ready), 0x1 (controller disabled), 0x2 (not enabled), 0x3 (DC brake not enabled), 0x4 (enabled), etc.

Fault handling:

Fault codes F-00 to F-113 cover various situations such as overcurrent, overvoltage, overheating, grounding, and communication timeout. When a fault occurs, the frequency converter will execute different responses such as "immediate shutdown", "stop", or "timeout warning" according to the type of fault. The fault information is stored in the memory. Resetting faults can be done through the STOP/RESET button on the panel, external terminals (fault reset), or software. After resetting, the driving device is usually in a locked state and needs to be reconfirmed before it can be started. The manual provides clear explanations of the possible causes and troubleshooting measures for each fault, such as the F-07 intermediate circuit overvoltage, which is usually related to excessive regenerative energy, brake circuit faults, or grid voltage fluctuations.

Overview of Key Technical Parameters

For the convenience of engineers in selecting and designing, MOVITRAC ®  B provided detailed technical parameters. Key information includes:

Environmental adaptability: The standard operating temperature range can reach -10 ° C to+50 ° C (depending on specifications and load), and cooling methods include natural cooling and fan forced cooling. The basic protection level is IP20, and in certain cases, adding accessories can reach IP10.

Electrical performance: Input voltage allows for a deviation of ± 10%. The output frequency and voltage are adjustable, and the PWM frequency can be selected as 4/8/12/16 kHz. Built in current limiting function (usually 150% rated current, lasting for 60 seconds).

Control terminal: Analog input compatible with 0-10V or 0 (4) -20mA. The binary input is PLC compatible level, and the output is relay contact or transistor open circuit output.

Braking capability: For models that operate in four quadrants (with brake chopper), an external braking resistor is required, with clear minimum requirements for the resistance value.

Energy consumption: The power loss of different specifications ranges from 30W to 2300W, and heat dissipation needs to be considered when designing the cabinet.