A System 450 hybrid analog output control module can provide the same control as the standard control modules, while providing a hybrid analog output control option for controlling EC motors.
The hybrid analog output control feature enables an analog VDC output to transition to a pulse output at low signal levels. This provides more efficient low-speed control of EC variable speed motors. These EC variable speed motors are typically used in condenser fan applications on a wide variety of refrigeration and HVAC condensing units.
The onboard analog output can also be configured for High Input Signal Selection, which enables precise and efficient EC motor speed control on multi-circuit condensing units.
See Table 1 for capabilities of the System 450 Hybrid Analog Output control modules.