HESG447260 R270BA01C-S ABB Bus Modul
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Product’s description
The ABB HESG447260 R270BA01C‑S used at the end of a bus network segment to ensure proper termination of the bus line, preventing signal reflections and ensuring correct communication
integrity.It interfaces with the system backbone (backplane) as well as providing a station-bus connector (RS-232) to the front.Likely part of ABB’s older
automation / DCS (Distributed Control System) infrastructure, specifically tied to the “R270” station type. (Mentioned in listing:
“R270 / 70BA” series)Because this is a termination / end‐module, it does not perform I/O (input/output) functions for
sensors/actuators; rather it is part of the bus infrastructure supporting other modules.If sourcing this
part, verify condition, revision version, and compatibility (suffixes like “-S” may
indicate a variant) because older modules may
have supply or support issues.
FAQ
Q1. What does this module do exactly?
A: It provides the termination and end-of-line coupling for an R270 bus station segment. In practice, it closes the station bus chain and ensures proper signal/line integrity for the bus.
Q2. Which systems is it compatible with?
A: It is compatible with the ABB R270 station/bus system (sometimes referenced as R270 / 70BA series) used in certain ABB automation/control racks. Check
your station architecture to ensure the “R270 / 70BA01C-S” variant is the correct one for your system.
Q3. What are the mounting or interface details?
A: The module uses a backplane plug-in interface (to the bus rack) plus a front connector (RS-232 / station bus) for the station bus link.
Q4. What are the ambient/environmental ratings?
A: One listing cites −20 °C to +70 °C. However, this may not be official for all
variants; check the official ABB datasheet for
your exact version.
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