Fieldbus Control

SNNA electric actuators feature seamless interfaces compatible with all main control systems and communication protocols. The fieldbus modules equipped for SQ, AQ and AQM series electric actuators cover MODBUS, PROFIBUS, FOUNDATION and SNNACAN buses.

To meet customer demands, SNNA configures each type of fieldbus module via independent POSD circuit boards, which are fixedly installed inside the electric actuator electrical enclosures. This design eliminates traditional external fieldbus control boxes and similar accessories, improving product stability while cutting user costs.

Complete SNNACAN Control Solution

Whether for remote control of a small number of electric valves or fully automated factories equipped with tens of thousands of instruments and control units, SNNACAN helps users effectively save time and operating costs.

MODBUS Module

One or two Modbus modules can be pre-installed inside SQ, AQ and AQM series actuators as required, to realize control functions and status data feedback. The on-site network adopts 2-wire or 4-wire high-speed RS485 data interface and complies with standard Modbus RTU protocol.

PROFIBUS Module

SQ, AQ and AQM electric actuators fitted with PROFIBUS fieldbus modules can be integrated into standard PROFIBUS networks, conforming to fieldbus standard EN 50170.

FOUNDATION Module

SQ, AQ and AQM actuators can be equipped with FF-1 modules to connect standard actuators into FOUNDATION fieldbus networks, complying with IEC 61158-2 fieldbus standards.