Technical Specifications Multi‑channel relay contact output, contact rated 250 V AC / 30 V DC. Back‑plane controller bus interface. Auxiliary power 24 V DC, typical power consumption 4.3 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Galvanic isolation between relay contact side and control circuit.
Functional Features Receives output control commands from main controller via back‑plane bus. Drives internal relay components to act and output dry‑contact switching signals for field loads. Front‑panel LED displays working status of each output channel. Built‑in hardware self‑diagnosis detects module internal circuit faults.
Application Scenarios Relay‑type digital output spare part for ABB Advant DCS system. Used for legacy process‑automation control cabinet overhaul.
Performance Parameters Reliable relay contact switching performance. Complete isolation between field load loop and control circuit. Fast response for bus control commands.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Electromagnetic relay assemblies and driving circuit. Back‑plane plug‑in connector and field signal terminals.
Structural Characteristics Standard rack plug‑in module. Front side equipped with field output signal terminals and channel status LED indicators. Rear side fitted with back‑plane bus connector. Weight approximately 0.43 kg.
Working Principle Controller sends output commands to DSDO120 57160001‑AK through back‑plane bus. Internal driving circuit energizes corresponding relay coil, relay contact closes or opens to output dry‑contact signal to field equipment.
Installation Requirements Insert DSDO120 57160001‑AK into designated rack slot and lock fixing latch. Connect field load‑circuit wiring to front‑end output terminals. Confirm back‑plane connector is fully engaged. Restore power supply, verify pull‑in and drop‑off action of every output channel.
Usage Notes Do not exceed rated voltage and current parameter of relay contacts. Install arc‑suppression components when driving inductive loads. Test switching action for all output channels after module replacement.
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