Process Control & Analog Output Solution — Allen-Bradley 1791-32AO | Block I/O Series
Where This Product Is Used
The Allen-Bradley 1791-32AO is engineered for demanding industrial environments where precise analog output control is critical. Typical deployment scenarios include:
- Process Manufacturing — Chemical dosing, flow control valves, and pressure regulation loops in oil & gas and water treatment plants.
- Discrete & Hybrid Automation — Coordinating variable-speed drives (VSDs), proportional valves, and servo amplifiers on automotive assembly lines.
- HVAC & Building Automation — Modulating damper actuators and chiller control loops in large commercial facilities.
- Food & Beverage — Temperature and pressure setpoint delivery in pasteurization and CIP (Clean-In-Place) systems.
- Material Handling — Tension control and speed reference signals for conveyor and winding systems.
Technical Specifications
| Part Number (SKU) | 1791-32AO |
| Brand | Allen-Bradley (Rockwell Automation) |
| Series | 1791 Block I/O |
| Module Type | Analog Output Block I/O Module |
| Output Points | 32 analog output channels |
| Communication | DeviceNet / Remote I/O |
| Output Signal Range | 4–20 mA / 0–10 VDC (channel-configurable) |
| Resolution | 12-bit (0–4095 counts per channel) |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Storage Temperature | -40°C to +85°C |
| Enclosure Rating | IP67 (NEMA 6) |
| Power Supply | 24 VDC nominal |
| Weight | 850 g |
| Mounting | Panel / DIN rail compatible |
Why Engineers Specify This Model
- High Channel Density — 32 analog outputs in a single compact block reduces panel footprint and wiring complexity versus discrete I/O cards.
- IP67 Sealed Housing — Rated for wash-down and wet environments; eliminates the need for additional enclosure protection in many installations.
- Native Rockwell Ecosystem Integration — Seamlessly maps into Studio 5000 / RSLogix 5000 tag databases with no custom driver development.
- Distributed Architecture — Mounts directly at the machine or process skid, cutting analog cable runs and reducing signal noise.
- Proven Field Reliability — The 1791 Block I/O series has decades of installed base across global process and discrete industries.
Complete System Bill of Materials
For a fully operational analog output node, engineers typically specify the following alongside the 1791-32AO:
- DeviceNet Scanner (e.g., 1756-DNB or 1771-SDN) — network master
- 24 VDC Power Supply (e.g., 1606-XLP) — field power for module and actuators
- DeviceNet Trunk Cable & Drop Connectors (e.g., 1485C series)
- Allen-Bradley ControlLogix or CompactLogix PLC — system controller
- RSNetWorx for DeviceNet — configuration and commissioning software
- Proportional control valves or VSD analog inputs — field devices
Compliance & Industry Standards
- CE Marked — European Machinery & EMC Directives
- UL Listed — UL 508 Industrial Control Equipment
- RoHS Compliant
- ODVA DeviceNet Conformance Tested
- IEC 61131-2 Programmable Controller Hardware Standard
Quality Assurance & Sourcing
Every 1791-32AO unit offered through Konmask.com undergoes a documented inspection process:
- Visual inspection for physical damage, label integrity, and connector condition
- Firmware and revision-level verification against Rockwell Automation published bulletins
- Functional power-on test where applicable
- Traceable sourcing documentation available upon request
We supply new, surplus-new, and factory-refurbished units. Condition is clearly stated on each listing. All units ship with anti-static packaging and moisture barrier protection.
How to Source This Part
- Add to Cart — Select quantity and proceed to checkout directly on this page.
- Request a Quote — For volume orders (>5 units) or project BOM pricing, email support@konmask.com.
- Urgent Requirement — Call or WhatsApp +0086 19859288691 for same-day availability confirmation and expedited shipping options.
- Lead Time — In-stock units typically ship within 1–2 business days. Ex-stock lead times are confirmed at order.
Application-Specific FAQ
Q: Is the 1791-32AO compatible with ControlLogix and CompactLogix platforms?
A: Yes. Via a DeviceNet scanner module, the 1791-32AO integrates with any Rockwell Automation controller that supports DeviceNet I/O mapping.
Q: Can individual channels be configured for current (mA) or voltage (V) output independently?
A: Channel output type is configured via RSNetWorx for DeviceNet software. Consult the 1791 Block I/O User Manual (Publication 1791-UM001) for channel configuration procedures.
Q: What is the resolution of each analog output channel?
A: The 1791-32AO provides 12-bit resolution (0–4095 counts) per output channel, delivering fine-grained process control.
Q: Is this module suitable for hazardous (Ex) area installations?
A: The standard 1791-32AO is not ATEX/IECEx rated. For hazardous area requirements, consult Rockwell Automation for intrinsically safe barrier solutions or Zone 2 alternatives.
Q: Do you provide a warranty?
A: Yes. Konmask.com provides a 90-day functional warranty on all units. Extended warranty options are available — contact us for details.
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Contact: support@konmask.com | +0086 19859288691
