ABB GJR2397000R1210 88TK50A-E Coupling Module

I. Basic Material Identification
Original factory order PN: GJR2397000R1210
Model abbreviation: 88TK50A-E (The same series, 88TK50R1210, is a hardware equivalent version)
Equipment category: Station Bus Coupling Module / FDDI Fiber Optic Bus Coupler
Ownership system: ABB Procontrol P14 Power DCS Power Station Control System
Origin: Manufactured by the original factory in Sweden

Core Function Positioning
FDDI Fiber Ring Network Hub
Realize data bridging between the internal station bus of Procontrol P14 control cabinet and the upper-layer FDDI dual-redundant fiber ring network, with 100Mbps high-speed fiber transmission, forming a redundant fault-tolerant control network for the power station.
System Isolation and Signal Conversion
Electrical signal station bus ↔ Optical signal FDDI fiber bidirectional conversion, electrical isolation to resist strong electromagnetic interference (essential in the high-voltage environment of the power plant).
Redundant Ring Self-healing Capability
Dual-ring FDDI architecture, automatic link switching when a single optical fiber segment breaks or a single module fails, without system interruption.

Electrical and Hardware Parameters
Power Supply Specifications
Rated Input: 24VDC industrial direct current
Working Current: Approximately 200mA
Overall Power Consumption: ≤15W
Communication Performance
Transmission Rate: 100 Mbps (FDDI standard)
Optical Fiber Interface: Compatible with ST/SC optical fiber connectors (multimode optical fiber)
Bus Protocol: Procontrol exclusive station bus + IEEE802.4 FDDI specification
Environmental Tolerance
Operating Temperature: -20℃ ~ +60℃
Storage Temperature: -30℃ ~ +70℃
Humidity: 0–95% RH, no condensation
Certification: CE, RoHS, IEC61131-2 industrial safety standard
Physical Size and Weight
Overall Dimensions: 198 × 261 × 40 mm
Net Weight: Approximately 0.8 kg
Installation Method: DIN rail cabinet embedded installation, screw terminal wiring