Speed control accessories support speed adjustment, operating-value monitoring, braking and interference reduction in AC drive control panels. This section provides access to potentiometers, braking resistors, indicators, input filters, multi-drive controllers, braking choppers, operator keypads and panel components.

Do not select accessories by motor power alone. Check the drive model, supply voltage, rated current, control inputs and duty cycle together. Use the icons below to open the product group that matches your application.

> Potentiometers: Analog and electronic models provide a speed reference. For analog types, match the resistance value to the drive requirements; for electronic types, check the supply and output signal against the control input.

> Braking resistors: These convert braking energy from deceleration or overhauling loads into heat. Check resistance, power rating, braking duty and cooling together. Never select a resistance below the minimum permitted by the drive or chopper.

> Speed and current indicators: These display values such as frequency, current or rotational speed from suitable input signals. Check the input type, scaling, supply voltage and panel cutout.

> Input filters (EMC/RFI): These reduce high-frequency interference conducted towards the supply. Check compatibility with the phase configuration, voltage, current and earthing system. Correct cabling and shielding also matter in systems using temperature controllers, counters and sensors.

> Multi-drive control: These devices provide central control or data monitoring for several drives. Match the communication protocol, number of devices and supported commands to the connected drives.

> Braking choppers: Consider an external unit when resistor braking is required and the drive has no suitable built-in chopper. Selection depends on DC bus voltage, braking current and duty cycle, rather than a fixed motor-power threshold.

> Panel meters and access devices: This group includes keypads and access devices for parameter adjustment, status monitoring and remote operation of compatible drives. Check the brand, drive series, connection interface and cable length.

> Panel components: This group covers fuses, contactors, relays, pushbuttons and signal lamps. Select the voltage and current ratings, protection coordination and mounting arrangements according to the panel design.