Bachmann SEM201 SERCOS Master Module

High-Speed, Reliable Control for Electric Drives

The SEM201 from Bachmann is a SERCOS (Serial Real-time Communication System) master module designed for high-performance control of up to 32 electric drives and servo amplifiers. Using fiber optic technology and a ring bus structure, it ensures low-latency, high-speed communication with excellent immunity to interference. Ideal for automation systems that require real-time performance and reliable drive control, the SEM201 enables seamless integration into complex industrial environments.

Key Features for Enhanced Drive Control

The SEM201 supports SERCOS 2 standard (IEC 61491) and operates with transfer rates of 2/4/8/16 MBaud. Its high-speed communication system allows cycle times from 62.5 μs to 65 ms. This flexibility enables synchronization of multiple masters, ensuring smooth operation even in large-scale systems. Furthermore, the module uses fiber optic technology to minimize signal loss and enhance reliability, making it perfect for demanding industrial applications.

Technical Specifications

System Features

Parameter	SEM201
Maximum Drives per Module	32
Communication Medium	Fiber optic ring
Number of Modules per Controller	Max. 12
Transfer Rates	2/4/8/16 MBaud
Cycle Time Range	62.5 µs to 65 ms
Synchronization	Multiple masters can be synchronized
Internal RAM	2 Kb x 32 DPRAM
Galvanic Isolation	Yes, via fiber optics

Environmental & Certification Details

Category	Details
Operating Temperature	0 °C to +60 °C
Storage Temperature	–40 °C to +85 °C
Humidity (operation)	5–95% non-condensing
Humidity (storage)	5–95% non-condensing
Pollution Degree	2 (non-condensing)
Certification	CE, UKCA, cULus
Compliance	SERCOS International (formerly IGS)

Performance and Integration Benefits

The SEM201 master module offers a robust solution for controlling multiple high-quality drives in real-time, with minimal cycle time and maximum synchronization. Fiber optic connections further enhance its durability and reliability, ensuring high-quality performance even in challenging environments. Its scalability and precise control capabilities make it a critical component for advanced automation systems.