Controls from two to four digital stages using Pulse Width Modulation (PWM) on each output.
PWM ► PWM simulates an analog response for the output. For example: If a PWM digital stage is commanded to maintain a 20% output for a period of 10 minutes, then the output would be activated for 2 minutes, and deactivated for 8 minutes during the 10 minute period. The 2 minutes of activation is not continuous but is broken into small segments evenly distributed throughout the 10 minute period. The pulsing digital output simulates an analog output continually operating at 20% of maximum value for the 10 minute period.
Also see:
Staging in the EfficientStages Programming Block