Allen-Bradley 1793-OB16P – 16-Point 24VDC Digital Output Module | ArmorBlock I/O Platform
Engineering Background
The Allen-Bradley 1793-OB16P is part of Rockwell Automation’s ArmorBlock I/O series — a ruggedized, distributed I/O platform engineered for harsh industrial environments where traditional panel-mounted I/O is impractical. Designed to mount directly on the machine, the ArmorBlock series eliminates long wire runs and reduces installation complexity in automotive, material handling, and process manufacturing applications.
Product Positioning
The 1793-OB16P delivers 16 individually protected 24VDC sourcing (PNP) digital outputs in a compact, IP67-rated housing. It integrates seamlessly into DeviceNet-based control architectures, enabling decentralized output control with diagnostic feedback at the field level. This module is the preferred choice for procurement engineers specifying reliable, maintainable distributed I/O in demanding production environments.
Complete Technical Specifications
| Catalog Number | 1793-OB16P |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Series / Platform | ArmorBlock I/O |
| Network Protocol | DeviceNet |
| Output Type | Digital Output (Sourcing / PNP) |
| Number of Outputs | 16 Points |
| Output Voltage | 24VDC |
| Output Current per Point | 0.5A (max) |
| Total Module Current | 8A (max, all outputs ON) |
| Supply Voltage | 24VDC (18–26.4VDC operating range) |
| Protection Rating | IP67 / NEMA 6 |
| Connector Type | Mini (M12) 4-pin connectors |
| Short-Circuit Protection | Electronic, per output point |
| Diagnostic Indicators | Per-point LED status indicators |
| Operating Temperature | -10°C to +55°C (14°F to 131°F) |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5–95% non-condensing |
| Vibration Resistance | IEC 68-2-6 |
| Shock Resistance | IEC 68-2-27 |
| Agency Certifications | UL, CE, CSA |
| Weight | Approx. 200g |
| Country of Origin | USA |
Proven Application Environments
- Automotive Assembly Lines — Direct machine-mount I/O for actuator and solenoid control on body-in-white and powertrain lines
- Material Handling & Conveyor Systems — Distributed output control for diverters, sorters, and accumulation zones
- Packaging Machinery — High-cycle output switching for pneumatic valves, reject mechanisms, and labeling actuators
- Food & Beverage Processing — IP67-rated housing withstands washdown and high-humidity environments
- Intralogistics & AGV Systems — Decentralized I/O nodes reduce cabinet footprint and cable routing complexity
- General Discrete Manufacturing — Any application requiring reliable 24VDC sourcing outputs on a DeviceNet network
Engineering Advantages
- Machine-Mount Design — IP67 housing eliminates the need for a control cabinet at the point of use, reducing installation cost and cable length
- Per-Point Electronic Protection — Individual short-circuit and overload protection prevents a single fault from disabling the entire output bank
- Per-Point LED Diagnostics — Immediate visual fault identification at the field device level reduces MTTR (Mean Time To Repair)
- DeviceNet Integration — Native DeviceNet connectivity enables real-time diagnostic data (output status, fault codes) to be surfaced in the PLC program
- Standardized M12 Connectors — Industry-standard Mini (M12) connectors simplify field wiring, replacement, and maintenance
- Compact Footprint — High I/O density in a small housing minimizes machine real estate requirements
System Architecture & Signal Flow
The 1793-OB16P operates as a DeviceNet slave node. The host PLC (e.g., Allen-Bradley ControlLogix or CompactLogix with a 1756-DNB or 1769-SDN scanner) sends output data over the DeviceNet trunk cable. The ArmorBlock module receives the network data, decodes the 16-bit output word, and drives each of the 16 M12 output ports accordingly. Each output is individually powered from the 24VDC supply and protected by an electronic current limiter. Fault status is reported back to the scanner via the DeviceNet I/O connection, enabling the PLC program to implement fault-handling logic without additional wiring.
Typical Network Topology: ControlLogix PLC → 1756-DNB DeviceNet Scanner → DeviceNet Trunk → 1793-OB16P (Slave Node, configurable address 0–63) → M12 Output Cables → Field Actuators / Solenoids
Sourcing & Quality Verification
- OEM Authenticity — All units sourced through verified Allen-Bradley / Rockwell Automation authorized distribution channels or directly from OEM-certified surplus inventories
- Pre-Shipment Inspection — Each module undergoes visual inspection, label verification (catalog number, series, date code), and functional power-on check before dispatch
- Traceability — Lot traceability records maintained; documentation available upon request for regulated industries
- Packaging Integrity — Shipped in anti-static packaging with foam protection; original OEM packaging preserved where available
- Warranty — 12-month operational warranty against manufacturing defects; DOA replacement policy within 7 days of receipt
Procurement Process
- Confirm Requirement — Verify catalog number (1793-OB16P), series revision, and required quantity with your engineering team
- Request Quote — Contact Konmask.com via email or phone for volume pricing, lead time confirmation, and availability
- Purchase Order — Submit PO with delivery address, required delivery date, and any special packaging or documentation requirements
- Order Confirmation — Receive order acknowledgment with tracking information within 1 business day of PO receipt
- Shipment & Delivery — Standard dispatch within 3–5 business days; expedited options available; DHL / FedEx / UPS international shipping supported
- Incoming Inspection — Recommended: verify catalog number label, inspect housing for damage, and perform continuity check before installation
Technical FAQ
Q: Is the 1793-OB16P compatible with ControlLogix and CompactLogix platforms?
A: Yes. The module communicates over DeviceNet and is compatible with any Allen-Bradley PLC equipped with a DeviceNet scanner module (e.g., 1756-DNB, 1769-SDN). It is configured via RSNetWorx for DeviceNet software.
Q: What is the maximum cable length for DeviceNet with this module?
A: DeviceNet trunk cable length depends on baud rate: 500m at 125Kbps, 250m at 250Kbps, 100m at 500Kbps. Drop cable length per node is 6m maximum.
Q: Can outputs be individually disabled or forced in the PLC program?
A: Yes. Each output bit in the 16-bit output word can be individually controlled by the PLC program. Hardware forcing is performed through the DeviceNet scanner’s I/O configuration in Studio 5000 / RSLogix 5000.
Q: What happens to outputs during a DeviceNet communication fault?
A: The module’s outputs will go to their configured fault state (default: all outputs OFF). Fault state behavior is configurable via RSNetWorx for DeviceNet.
Q: Do you supply the EDS (Electronic Data Sheet) file for this module?
A: The EDS file is available from the Rockwell Automation Product Compatibility and Download Center (PCDC). Konmask.com can provide sourcing assistance upon request.
Q: Is this module available in new, refurbished, or surplus condition?
A: Konmask.com supplies both new OEM stock and certified surplus units. Condition is clearly stated on each order confirmation. All units pass pre-shipment inspection regardless of condition.
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