Technical Specifications Fully compliant with DDCS optical‑fiber communication standard. Supports multi‑drive ring topology communication. Optimized optical transceiver unit. Module power supply comes from converter expansion slot. Typical power consumption 2.0 W. Operating temperature ‑25 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Protection class IP20. Certifications include CE, UL compliance.
Functional Features Completes mutual conversion between DDCS electrical signal and optical‑fiber signal. Supports optical‑fiber ring network for multi‑converter synchronous control. LED indicators display link running and fault condition. Realizes high‑speed real‑time data exchange between drives. Built‑in ring‑network fault bypass function. Hardware is backward compatible with RDCO‑03 application scenario.
Application Scenarios Installed in expansion slot of ABB series frequency converter. Builds DDCS optical‑fiber communication link for multi‑drive synchronous control system. Applies to metallurgy, paper‑making, lifting equipment and other sites with strong electromagnetic interference. Can serve as direct replacement for RDCO‑03 module.
Performance Parameters DDCS communication refresh rate satisfies multi‑drive high‑precision synchronization requirement. Optical‑fiber transmission eliminates ground loop interference. Single‑point ring‑network link fault triggers bypass without stopping whole system communication.
Installation Requirements Power off frequency converter before module installation. Insert RDCO‑04C into designated expansion slot of converter control unit and tighten fixing screw. Connect optical‑fiber jumper according to transmit‑receive port correspondence. Maintain optical‑fiber minimum bending radius requirement. Set corresponding DDCS communication parameters in converter parameter menu.
Usage Notes Do not stare directly at optical transceiver port to prevent laser injury. Keep optical‑fiber end‑face away from dust contamination. Prohibit sharp bending for optical‑fiber cable. Must power‑off converter before plug‑in or removal operation. Observe LED link indicator after commissioning. Existing RDCO‑03 can be directly replaced by RDCO‑04C without mechanical modification.
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