Technical Specifications
Number of inputs: 16, non-isolated. Input type: 24V DC sinking. Input voltage range: 10V to 31.2V DC. ON-state voltage: 10V DC minimum. OFF-state voltage: 5V DC maximum. Input current: 6.3mA @ 24V DC. Flexbus current: 120mA @ 5V DC. Power dissipation: 6.1W maximum. Operating temperature range: -20°C to +55°C. Storage temperature range: -40°C to +85°C. Mounting: DIN rail via terminal base.
Functional Features
Sixteen sinking inputs interface with sourcing field devices. Per-channel status indicators provide real-time input state visualization. Electronic input filtering suppresses electrical noise. Hot-swap capability allows module replacement without system shutdown. It mounts on standard Flex I/O terminal bases for flexible distributed architecture.
Application Scenarios
It applies to distributed I/O systems, machine-level control, conveyor systems, packaging machinery, material handling equipment, and remote discrete signal acquisition in industrial automation.
Material Composition
The module housing uses flame-retardant engineering plastic. Circuit board is FR-4 glass epoxy with copper traces. Contacts are gold-plated for reliable connection.
Structural Characteristics
It features compact Flex I/O form factor with plastic housing, front panel status indicators, label area for channel identification, and rear Flex bus connector that mates with terminal base units.
Working Principle
It receives discrete voltage signals from field sensing devices, conditions and filters the signals to logic levels, and transmits input status data to the Flex I/O adapter module via the internal Flex bus, which forwards the data to the host controller over the network.
Installation Requirements
Mount on compatible 1794-TB3 or equivalent terminal base units. Use 22-14 AWG copper wire rated at 90°C. Tighten terminal screws to specified torque. Ensure reliable system grounding. Observe correct polarity for sinking input wiring.
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