1791D-16V0 Allen-Bradley Input Module | 16 Sourcing | CompactBlock

Product Overview – 1791D-16V0 CompactBlock I/O

• Manufacturer: Allen-Bradley / Rockwell Automation
• Category: PLCs – CompactBlock I/O 1791D Series
• Part Number: 1791D-16V0
• Inputs: 16 sourcing inputs (10-30V DC on-state)
• Built-in: DeviceNet adapter + power supply
• Supports: Up to 1 analog/digital expansion block
• Weight: 0.81 lbs (0.37 kg)

Technical Specifications & Core Data

• Input Type: Sourcing
• Off-state Voltage: 5V DC max.
• On-state Voltage: 10V DC min.
• Off-state Current: 1.5mA @ 5V DC max.
• On-state Current: 11mA @ 30V DC max.
• DeviceNet Power: 11-25V DC
• Enclosure: IEC IP20
• Logic Status LED: Solid green (enabled), flashing green (forces active), off (disabled)

Field-Proven Design & Compatibility

• Works with PLC, SLC, or SoftLogix controllers.
• Compact size fits shallow enclosures and tight panels.
• Built-in DeviceLogix for local control logic (sense-to-actuation).
• Detachable screw-clamp terminal strip – swap blocks without rewiring.
• Stand-alone 24V DC operation via DeviceNet link.

I/O Configuration & Expansion Capability

• Standalone: 2 input bytes, 0 output bytes
• + Expansion Input Module: 5 input bytes, 0 output bytes
• + Expansion Output Module: 3 input bytes, 2 output bytes
• Base modules offer 4-16 I/O points; expansion modules offer 16 points.

Installation, Environment & Maintenance

• Install in subsidiary enclosure (IP20 rated).
• Follow ESD handling guidelines to prevent internal damage.
• Logic status indicator provides instant diagnostic feedback.
• No calibration required – plug-and-play operation.
• 24-28 hour dispatch for stock items.

Oiltech Controls Review / Insight

• Reliability: The 1791D-16V0 is a workhorse for digital input applications. Its DeviceNet integration simplifies wiring and reduces cabinet space.
• Compatibility: Seamless with Rockwell PLCs and SLC systems. Ideal for legacy upgrades or new compact installations.
• Serviceability: Detachable terminal strip is a practical feature – maintenance teams appreciate the quick swap capability.
• Typical Devices: Works with 1791D series expansion modules, CompactBlock I/O racks, and DeviceNet scanners.

Why Buy From Oiltech Controls?

• Over 15 years specializing in industrial automation spares.
• Global shipping support – we deliver worldwide.
• Options: tested surplus, refurbished, or new surplus.
• 12-month warranty on all modules.
• Technical verification performed before each shipment.
• Expert assistance for obsolete control system support.

Logistics & Warranty

• Shipping: FedEx, UPS, DHL – express global delivery.
• Dispatch: 24-28 hours from order confirmation.
• Warranty: 12 months against manufacturing defects.
• Full tracking provided for all orders.

Professional FAQ – 5 Expert Questions

• Q: Can the 1791D-16V0 be used with a 24V DC sink input device?
  A: No. This module is sourcing type – it provides current to the load. For sinking inputs, consider the 1791D-16V0C variant or use an interposing relay.
• Q: What expansion modules are compatible with this base?
  A: It supports one (1) digital or analog expansion block from the 1791D series. Check the I/O byte allocation table to avoid addressing conflicts.
• Q: How do I interpret the logic status LED?
  A: Solid green = logic enabled. Flashing green = logic enabled with local forces. Off = logic disabled. This helps during commissioning.
• Q: Is the 1791D-16V0 suitable for new projects or only legacy?
  A: Both. It works well in new compact designs due to its small footprint and DeviceNet integration. For large new installations, consider 5069 or 1734 series.
• Q: What is the recommended practice for mounting this module?
  A: Install in an IP20 or higher enclosure. Use a DIN rail or panel mount. Ensure proper grounding and ESD precautions during handling.

Contact & Support

• Email: info@oiltechcontrols.com
• WhatsApp: +86 158 8020 0923
• Technical support available for configuration and compatibility queries.

Copyright © 2026 Oiltech Controls Limited. https://www.oiltechcontrols.com/ All rights reserved.