DIASYS FXDOM01 16-channel Digital Input Module

Product Description

DIASYS FXDOM01 is a 16‑channel digital input module for DIASYS Netmation DCS manufactured by MHI Power (MHPS), made in Japan. OEM discontinued, it is circulated as spare component for legacy power‑plant DCS installations. This module acquires field DC24V discrete signals from limit switches, push‑buttons, relay contacts and valve feedback contacts. Collected status data is transmitted to DCS controller via Flexbus back‑plane bus for logic processing. Each channel provides galvanic isolation to suppress surge and electromagnetic noise. Software‑configurable digital input filter (0 ms / 5 ms / 10 ms / 50 ms) filters contact bounce. Front‑panel LED indicators show power and per‑channel status. Hot‑swap rack‑slot mounting enables convenient on‑site replacement. Designed for continuous high‑reliability power‑plant operation. Widely used for overhaul and spare‑part swap in thermal, hydro and combined‑cycle plants. No direct drop‑in replacement is available.

2. Product Parameters

• Model:  FXDOM01
• Brand: DIASYS Netmation (MHI Power, Mitsubishi Power)
• Product Type: 16‑Channel Digital Input Module
• Series: DIASYS Netmation DCS
• Country of Origin: Japan
• Input Channels: 16 points, negative‑common input
• Rated Input: DC24V, 5 mA; minimum ON‑current 1.8 mA
• Input Filter: Digital filter, global software selection: 0/5/10/50 ms
• System Bus: Flexbus back‑plane bus; powered by DC5V, max. 80 mA consumption
• Isolation: Galvanic opto‑coupler isolation between field side and system side
• Status Indication: Front‑panel LEDs for power and each input channel
• Mounting: Rack slot‑mount, hot‑swap capable
• Operating Temperature: 0℃ ~ +55℃
• Storage Temperature: ‑20℃ ~ +75℃
• Ingress Protection: IP20 (cabinet‑rack installation)
• Weight: Approx. 140 g
• Product Status: OEM discontinued; surplus‑new / used‑refurbished spares available
• Key Features: 16‑channel 24VDC discrete‑signal acquisition, software‑selectable input filter, opto‑coupler isolation, per‑channel LED diagnostics, hot‑swap maintainability, compatible with power‑plant Flexbus DCS architecture

3. Product Application

FXDIM01 digital input module is dedicated to DIASYS Netmation distributed control systems. Main application fields are listed below:

1. Thermal Power‑plant DCS: Boiler & turbine control cabinets; acquisition of auxiliary‑equipment status, valve position feedback and relay contact signals.
2. Hydropower Plants: Hydro‑turbine generator control cabinets for breaker status and field‑device discrete feedback.
3. Combined‑Cycle Power Plants: Gas‑turbine and steam‑turbine main & auxiliary control for discrete‑signal input for interlock logic.
4. Power‑plant Auxiliary Systems: Water treatment, ash‑handling, desulfurization & denitrification plant for pump‑valve status collection.
5. Industrial Captive Power & Cogeneration: Discrete‑signal collection for legacy DIASYS‑Netmation I/O stations.
6. Legacy Power‑plant Retrofit & Maintenance: Fault‑module replacement and overhaul spares for DIASYS‑Netmation installations to sustain ageing power‑generation units.