XBC/XEC-DR28UA

Description

UA variant of the DR28 family, 16 DI + 12 relay outputs, plus onboard analog I/O in the A variant: commonly 4 universal analog inputs and 4 analog outputs in DR28UA listings; dual Ethernet and rich comms.

The Polar Energy Assessment:

DR28UA denotes the Ultimate DR28 family with the A suffix that adds analog capability; present configurations with 4 universal analog inputs and 4 analog outputs alongside standard digital I/O and relays. It keeps the family’s dual Ethernet, SD logging and high-speed counters, while providing mixed analog + discrete I/O in one compact CPU; useful for small plant controllers that need both discrete and analog loops without an extra module.

Pros

• Integrated analog I/O reduces module count and wiring complexity for mixed-signal panels.
• Dual Ethernet and robust HSC/PID features keep one rack capable for many tasks.

Limitations

• Integrated analogs may not satisfy high-channel analog systems; for many analog points an expansion module rack is still recommended.
• As always, check ADC resolution and sample rate against your control loop needs.

Typical use cases

• Small process controllers combining discrete and analog loops, AHU/chiller controllers with mixed sensors and actuators, machines needing a few analog channels in a compact CPU.