Configured for discrete direct current sourcing execution in remote subsystem environments, the Allen-Bradley 1794-OB16 (1794-OB16 Flex 16 Point Digital Output Module) provides direct physical/electrical execution.

Structural Design & Subassembly Designations

• 1794: Identifies the generic distributed hardware chassis and backplane product family.
• OB: Specifies the direct current (DC) solid-state sourcing electronic circuit configuration.
• 16: Defines the allocation of exactly 16 discrete signal processing terminals on the front face block.

Hardware Specifications

Deterministic Networks & I/O Density Scaling

The internal logic interface bridges physical field switches with the backplane bus communication velocity architecture. When linked to industrial communication heads, the assembly maintains deterministic state distribution via EtherNet/IP platforms while managing total I/O density scaling options across remote processing blocks.

Logistics Packaging Record

• 1 x 1794-OB16 Flex 16 Point Digital Output Module
• 1 x Factory Documented Installation Sheet

Physical Assembly & Layout Instructions

• Module Positioning
  • Set the local mechanical position keying switch located on the terminal base block to position 2 prior to execution.
  • Align the matching rear terminal rails and exert direct downward physical pressure until the structural latch holds the device stable.
• Field Loop Isolation
  • Separate the high-current 24 VDC output load conductors away from any adjacent low-level analog or signal telemetry lines.
  • Verify complete common-mode grounding connections across the metal DIN-rail framework to damp out common electromagnetic spikes.

Maintenance Engineering FAQ

• Can this specific sourcing output assembly support physical removal and insertion under power (RIUP)?

  Yes, RIUP parameters permit hot-swap actions only when the operational area is verified to be completely non-hazardous.

• What is the maximum current drawn from the internal 5 VDC system backplane?

  The internal processing microcircuit elements draw a maximum current load of 80 mA from the backplane line.

• What happens to the 16 output channels when a backplane timeout error occurs?

  The sourcing circuits execute a hard drop to the off state or transition to configured safe fallback values.

• Is it possible to combine output channels in a parallel structure to handle higher current loads?

  Yes, channels within the same physical group can be paralleled up to increase total current capability per load.

• What is the maximum leakage current rating for a channel when it is turned off?

  The solid-state sourcing circuit features a maximum off-state leakage specification of 0.5 mA per point.

• Does the hardware layout incorporate internal galvanic isolation layers between fields and backplanes?

  Yes, optocoupler electronic assemblies deliver continuous galvanic isolation up to a standard value of 850 VDC.

• What type of electrical circuit protection is required for the external 24 VDC field power supply loop?

  Install a fast-acting fuse or an equivalent electrical current-limiting protection device to shield the internal sourcing circuits.

• Are there specific hardware revision dependencies when doing a direct device exchange?

  Ensure the target controller firmware profile parameters match the existing module configuration series before cycling power.