Description
Honeywell MC-41110400
Technical Specifications
- Product type: Digital input card
- Channels: Multi-channel DI
- Inputs: DC24 V dry contact / PNP
- Input current: About 5 mA per channel
- Isolation: Channel group isolation
- Supply: Rack backplane
- Response: 5 ms
- Temperature: 0 °C to +60 °C
- Storage: -20 °C to +70 °C
- Humidity: 5 % to 95 %, non-condensing
- Protection: IP20
- Installation: Eurocard plug-in
Functional Features
- Multi-channel DC24 V digital input
- Dry contact and PNP proximity switch
- Channel wire-break diagnosis
- Front panel LEDs per channel
- Channel group optical isolation
- TPS bus communication
- Input filter time software configurable
- Non-volatile channel configuration
- Industrial-grade components
- Continuous operation
Application Scenarios
- Refinery field switch acquisition
- Petrochemical valve position feedback
- Chemical DCS digital input
- Plant switch signal monitoring
- TPS DI cards
Materials and Construction
- Front panel: Metal panel
- PCB: FR4 board with conformal coating
- Input: Optocouplers, current-limiting resistors
- Connector: Gold-plated Eurocard
- Terminals: Screw-fastened terminals
- Passive components: TVS, metal film resistors
Structural Features
- Eurocard plug-in in TPS rack I/O slot
- Front panel channel LEDs and terminals
- Channel group isolation
- Card locking mechanism
- Removable terminal block
- Metal panel shielding
Working Principle Field DC24 V signals enter terminals; after current-limiting, optocouplers convert to digital logic; filtering de-bounces before uploading over TPS bus to control station. Diagnostics monitor loop current to identify wire-break. LEDs indicate channel status.
Installation Requirements
- Insert I/O slot with power off
- Shielded twisted pair, single-point ground
- Route signal and power cables separately
- Rack grounding
- Temperature 0 °C to +60 °C
- Configure channel filter in software
Precautions
- Do not hot-swap online
- Input must not exceed DC30 V
- Wear ESD wrist strap
- Verify channels from software after replacement
- Store spares in anti-static moisture-proof packaging
- Periodically tighten terminals
