5-Wire Brushless Diaphragm Pump Wiring: PWM and Speed Feedback
Understand the control functions introduced in a five-wire brushless diaphragm pump video, including PWM speed control, FG feedback and direction control.
Watch the five-wire brushless pump control overview
What do the control wires on a brushless pump do?
The source introduces PWM control, FG speed feedback and direction control on a five-wire brushless configuration. Confirm the actual wiring diagram before connection: the number of wires alone does not establish colors, pin assignments or signal voltage levels.
PWM command
PWM provides a motor-speed command on a supported configuration. Its required frequency, logic levels and allowable duty-cycle range must come from the selected motor documentation. A speed command is not a calibrated liquid-flow measurement.FG feedback
FG reports motor rotation information. The controller must interpret the documented pulses-per-revolution relationship. Motor rotation can continue when liquid delivery is interrupted, so speed feedback alone cannot confirm flow.Direction control
A motor direction signal does not automatically make a diaphragm pump's liquid path reversible. Inlet and outlet check valves determine fluid direction; confirm the pump's permitted rotation and operating behavior before using this input.
Review brushless pump control options before wiring
The DPL60-BB product page is the starting point for the brushless family. Specify the five-wire control requirement when requesting the motor variant and its electrical drawing; not every brushless pump uses this wiring arrangement.