ABB DSPB120 Modules – DSPB120 57340001-T/3 Mainboard

Technical Dossier

Product Details And Specifications

ABB DSPB120 Series Technical Notes

The Evolution of DSPB120 Architecture

The DSPB120 mainboard was introduced as part of ABB's Advant Controller 160 (AC 160) platform, which succeeded the earlier AC 110 and AC 130 series. The AC 160 architecture adopted a modular backplane design, allowing independent replacement of CPU, I/O, and communication modules without full rack shutdown in supported configurations. Early DSPB120 revisions (suffix -T/1 and -T/2) used a 16-bit processor core with limited onboard RAM, while the -T/3 revision introduced expanded memory addressing and improved cycle time performance. Subsequent hardware iterations addressed EMC compliance requirements for European CE marking and added support for PROFIBUS DP communication via companion modules. The DSPB120 platform reached end-of-active-production status, with ABB transitioning customers toward the AC 800M (PM851, PM856, PM860) and AC 800F (Freelance) platforms. However, due to the long operational lifecycle of process industry installations, DSPB120 boards remain in active service and demand for verified replacement units continues across the aftermarket. Compatibility between -T/1, -T/2, and -T/3 revisions requires firmware version verification before substitution; cross-revision replacement without firmware alignment can cause initialization faults on the backplane bus.

DSPB120 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the ABB Advant/DSPB120 ecosystem, organized by functional category. Each entry reflects a distinct hardware role within the AC 160 control architecture.

CPU / Mainboard Modules

• DSPB120 57340001-T/1: AC 160 mainboard, revision 1, 16-bit CPU, base memory configuration
• DSPB120 57340001-T/2: AC 160 mainboard, revision 2, improved EMC shielding, expanded I/O addressing
• DSPB120 57340001-T/3: AC 160 mainboard, revision 3, extended RAM, optimized scan cycle, CE-compliant
• DSPB120 57340001-T/4: AC 160 mainboard, revision 4, firmware update support for PROFIBUS integration

Digital Input (DI) Modules

• DSDI110A 57160001-P: 16-channel 24 VDC digital input module, AC 160 rack compatible
• DSDI110A 57160001-K: 16-channel DI module, isolated inputs, high-noise-immunity variant
• DSDI115A 57160001-GEA1: 32-channel DI module, high-density rack mount, AC 160 bus

Digital Output (DO) Modules

• DSDO110A 57160001-P: 16-channel 24 VDC digital output module, transistor outputs
• DSDO115A 57160001-GEA1: 32-channel DO module, relay output variant, AC 160 compatible

Analog Input (AI) Modules

• DSAI110A 57120001-P: 16-channel analog input, 4–20 mA / 0–10 V, 12-bit resolution
• DSAI130A 57120001-GEA1: 8-channel AI module, high-resolution 16-bit, thermocouple/RTD support
• DSAI155A 57120001-K: 16-channel AI, HART-compatible, loop-powered transmitter interface

Analog Output (AO) Modules

• DSAO110A 57130001-P: 8-channel analog output, 4–20 mA, 12-bit DAC, AC 160 bus
• DSAO120A 57130001-GEA1: 4-channel AO, high-accuracy 16-bit, isolated outputs

Communication & Network Modules

• DSSB140 57310001-P: PROFIBUS DP master/slave communication adapter, AC 160 backplane
• DSSB110 57310001-K: Serial communication module, RS-232/RS-485, Modbus RTU support
• DSCS140 57350001-P: Ethernet TCP/IP communication module, AC 160 to supervisory network

Power Supply Modules

• DSPB110 57340001-P: AC 160 rack power supply, 24 VDC input, redundant-capable
• DSPS110A 57340001-K: Redundant power supply module, hot-swap capable, AC 160 rack

Sourcing Hard-to-Find & Obsolete DSPB120 Parts

DriveKNMS supports installed-base sourcing for this series through RFQ review, including model matching, condition checks and documentation requirements before quotation.