ABB SPDSI22Key features
Purpose: ABB SPDSI22 is a digital input module in ABB Symphony Plus Harmony control system, used to transmit digital signals of field equipment to the control system. It is suitable for process industrial automation control fields such as power, chemical, oil and gas, water treatment, metallurgy, etc., and plays an important role in signal acquisition in DCS system.
Compact design: ABB SPDSI22saves installation space and is suitable for compact distribution cabinets.
High reliability: optimized arc extinguishing system, suitable for frequent operation environment.
Intelligent integration: ABB SPDSI22 supports remote monitoring and SCADA system integration.
Flexible configuration: ABB SPDSI22 compatible with ABB Ekip accessories.
Environmental adaptability: strong adaptability in wide temperature range, dust and moisture proof.
Typical cooperation cases
Middle East: Saudi Arabian solar power station uses ABB SPDSI22 for photovoltaic inverter distribution protection.
Asia Pacific: Singapore subway system uses ABB SPDSI22 for track power supply branch protection.
Alternative models
Model | Features | Interchangeability | Pros & Cons Analysis |
SPDSI22 | Multi-voltage digital input, LED indication, modular design | Widely used, high compatibility | Supports various input voltages, flexible configuration, ideal for complex environments |
SPDSI13 / 14 | General-purpose DI modules, some with single voltage only | Replaceable by SPDSI22 | Limited voltage support, less flexible, outdated for modern needs |
SPASI23 | Analog input module | Not interchangeable (different type) | Different signal type (analog), serves different function |
S800 DI Modules | For use in AC800M/800xA systems only | Not compatible with Harmony | Incompatible with Harmony/Infi90 systems, platform-dependent |
Summary: SPDSI22 is one of the most comprehensive digital input modules in the ABB Harmony system. It can replace lower-version models such as SPDSI13. It has stronger voltage adaptation capabilities and is especially suitable for multi-voltage mixed applications.
