Technical Specifications Module Type: Combined Digital Input / Output Module Channel Configuration: Multi‑channel digital input + multi‑channel digital output Signal Type: Dry‑contact discrete input, isolated discrete output Channel Isolation: Per‑channel galvanic isolation Communication Interface: Redundant I/A fieldbus Operating Power: 24 VDC Operating Temperature: 0 °C to +60 °C Storage Temperature: ‑40 °C to +85 °C Relative Humidity: 5%‑95%, non‑condensing Mounting: DIN‑rail baseplate installation Certifications: CE industrial combined I/O module compliance
Functional Features Integrates digital input acquisition and digital control output functions within one module unit. Configurable input filter time suppresses field‑side signal jitter and interference pulse. Configurable fail‑safe output state for system fault and communication failure condition. Built‑in channel fault diagnosis function detects input‑output loop abnormal status. Redundant fieldbus communication realizes reliable data and control command transmission. Hot‑swappable module structure supports on‑site replacement without field wiring disconnection.
Application Scenarios Widely applied in petrochemical, chemical and power‑industry DCS control cabinets. Used for local equipment sub‑loop control, collects field valve position feedback and equipment status switch‑value signals, outputs interlock control signals to solenoid valves and intermediate relays.
Structural Characteristics Compact 200‑series combined‑I/O module housing, full reference part number RH916XZ. Gold‑plated bottom connector for electrical connection with DIN‑rail baseplate. Front‑panel LED indicators for power, bus communication, input‑output channel status and fault alarm. Cooperates with matched termination assembly for field input‑output signal wiring conversion.
Working Principle Field discrete input signal is transmitted to FBM217 RH916XZ module via termination assembly. After isolation and filter processing, module collects each channel switch‑on‑off status and uploads data to DCS field control processor through redundant fieldbus.
Installation Requirements Mount matched baseplate on standard 35 mm DIN‑rail inside control cabinet. Insert FBM217 RH916XZ onto baseplate and lock mechanical buckle. Connect field input‑output signal wiring to corresponding termination assembly terminals.
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