ABB NSSM01 Superloop Storage / Serial Interface Module for Symphony / INFI 90 DCS

NSSM01 is an ABB Bailey high-performance Superloop storage and serial interface module, a core component of the 

ABB Symphony (INFI 90) DCS platform. It provides data buffering, storage, and synchronization across the Superloop control network, 

ensuring integrity and consistency of process data, alarms, and control commands between controllers and nodes. It also functions as a serial communication interface 

for RS-232/422/485 devices, enabling integration with third-party equipment in power, oil & gas, and heavy industry DCS environments.

3. Technical Specifications

• Part Number: NSSM01
• Manufacturer: ABB (Bailey)
• System Compatibility: ABB Symphony / INFI 90 DCS
• Function: Superloop Data Storage & Serial Interface Module
• Power Supply: 24VDC (19.2–28.8VDC)
• Serial Interfaces: RS-232-C, RS-422, RS-485
• Data Rate: Up to 115.2 kbps (serial)
• Operating Temperature: -25°C ~ +70°C
• Storage Temperature: -40°C ~ +85°C
• Humidity: 5%–95% non-condensing
• Dimensions: 100 × 45 × 160 mm (3U)
• Weight: ~0.5 kg
• Certification: CE, UL, CSA, IEC 62443