XBC/XEC-DN40SU

Description

SU-class compact CPU, typically 24 DI + 16 transistor outputs, standard performance and features for medium-density machines.

The Polar Energy Assessment:

The DN40SU is an SU standard model offering higher local I/O counts than the DN30SU while remaining in the SU performance tier. It provides the SU hallmark: ~15k steps program memory, ~94 ns/step processing, built-in PID, HSC and a practical expansion budget. Ideal when you need more local inputs but still want SU class capability and price.

Pros

• Higher local I/O count in the SU performance bracket.
• SU feature set covers PID, positioning and robust HSC without H-class cost.

Limitations

• If you require H-class speeds or extreme HSC counts, upgrade to H family.

Typical use cases

• AHU/chiller panels with more sensors, medium-sized OEM machines with many inputs, or any application where SU performance plus ~40 local points fits best.