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The ABB GJR2370800R0200 (88FN02C‑E) Coupling Moduleserves as a local-bus coupling/interfacing device, enabling communication between bus segments or between station backbone and local modules.
It supports a 24 V DC power supply (for one listing) and is rated for module current ~166 mA.It provides electrical isolation between bus segments (e.g., 1500 V DC station-to-remote)
and surge withstand capability (2 kV 1.2/50 µs) in one listing.The 88FN02C-E coupling module is used within ABB’s automation/DCS/PLC-bus systems (e.g., Procontrol
P14 or similar) to interconnect local-bus segments, enabling expansion of I/O racks, modules, or linking processing units with remote I/O.
Because it is a “coupling module” rather than a direct I/O module, its role is in the
communications/bus infrastructure rather than
sensing/actuating loads.
Q5. What if I need the exact pin-out or wiring diagram?
A5. You will need to obtain the official ABB datasheet for the 88FN02C-E variant. Reseller listings have partial data but may omit critical wiring details. Always verify compatibility and wiring before installation.
Q6. Is the module still in production / available?
A6. It appears to be available via spare parts / surplus channels as new old stock (NOS). However, do check for obsolescence with ABB or their authorised
distributor; some modules of older control systems may be phased out.
Q8. Can this module switch or drive loads like motors or valves?
A8. No — this is not a load-switching I/O module. It functions as a bus coupling/communications interface, not as a direct
actuator/sensor interface. For load switching, you would use a relay or
digital output module.
Q9. Where can I find the datasheet?
A9. Contact ABB or their authorised distributor and request the datasheet for “88FN02C-E (GJR2370800R0200)
coupling module”. Some online listings provide partial specs but may not
include full pin-outs, electrical data,
mechanical drawings.
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