Allen-Bradley 2711-K5A8 – 5″ Monochrome Keypad HMI Terminal | PanelView Standard Platform
Engineering Background: The Allen-Bradley PanelView Standard series represents Rockwell Automation’s proven operator interface platform, engineered for demanding industrial environments where reliability and deterministic response are non-negotiable. Deployed globally across discrete manufacturing, process control, and infrastructure sectors since the 1990s, the PanelView Standard remains a cornerstone of legacy and active control architectures worldwide.
Product Positioning: The 2711-K5A8 is a 5-inch monochrome keypad-only terminal within the PanelView Standard 550 family. It communicates via DH-485 (RS-422) and is designed for panel-mount integration in MCC doors, control cabinets, and skid-mounted enclosures. Ideal for procurement engineers maintaining existing Allen-Bradley DH-485 networks or executing like-for-like replacements without PLC reprogramming.
Complete Technical Specifications
- Part Number: 2711-K5A8
- Catalog Series: PanelView Standard 550
- Display Type: 5.0″ STN Monochrome LCD
- Display Resolution: 240 × 128 pixels
- Input Method: Keypad only (no touchscreen)
- Communication Protocol: DH-485 (RS-422), Node Address configurable
- Baud Rate: 1200 / 2400 / 4800 / 9600 / 19200 bps
- Power Supply: 24 VDC (18–32 VDC operating range)
- Power Consumption: Approx. 15 W typical
- Operating Temperature: 0 °C to +55 °C (32 °F to 131 °F)
- Storage Temperature: −40 °C to +85 °C
- Relative Humidity: 5–95% non-condensing
- Enclosure Rating: NEMA 4/4X, 12, 13 (front face); IP65
- Panel Cutout: 192 mm × 138 mm (7.56″ × 5.43″)
- Mounting Depth: Approx. 95 mm behind panel
- Unit Weight: 1.2 kg (2.65 lb)
- Memory: 64 KB application memory
- Certifications: UL Listed, CE Marked, CSA Certified
- Compatible Software: PanelBuilder 1400e / PanelBuilder32
- Firmware: Factory-loaded, field-upgradeable via serial port
Proven Application Environments
- Automotive assembly line operator stations with DH-485 PLC-5 or SLC 500 networks
- Water/wastewater pump station local HMI panels
- Food & beverage packaging line control interfaces (washdown-rated enclosures)
- Oil & gas wellhead and skid-mounted control panels
- HVAC and building automation retrofit projects
- MCC (Motor Control Center) door-mounted operator interfaces
- Legacy DH-485 network expansions without PLC replacement
Engineering Advantages
- Zero Reprogramming Required: Drop-in replacement for existing 2711-K5A8 units — application files transfer directly via PanelBuilder32.
- NEMA 4/4X Front Face: Suitable for washdown and outdoor-rated enclosures without additional sealing.
- Deterministic DH-485 Communication: Token-passing network ensures predictable scan times critical for safety-adjacent applications.
- Keypad-Only Interface: Eliminates touchscreen wear in high-glove or high-vibration environments.
- Wide DC Input Range: 18–32 VDC tolerance accommodates voltage sag in long cable runs.
- Proven 30+ Year Platform: Extensive field history, abundant spare parts ecosystem, and stable firmware.
- Low Total Cost of Ownership: Avoids costly PLC and network infrastructure upgrades when replacing failed terminals.
System Architecture & Signal Flow
The 2711-K5A8 operates as a DH-485 network node, communicating with Allen-Bradley SLC 500, PLC-5, or MicroLogix controllers via RS-422 differential signaling. Signal flow is as follows:
- PLC Controller (SLC 500 / PLC-5 / MicroLogix) ↔ DH-485 Network (RS-422, up to 32 nodes, max 1219 m / 4000 ft)
- 2711-K5A8 Terminal reads/writes data files (N, B, F, T, C registers) directly via configured node address
- Operator Input via function keys and numeric keypad → mapped to PLC data table addresses in PanelBuilder application
- Display Output: real-time data values, alarm messages, and navigation screens rendered on 240×128 monochrome LCD
- Power Input: 24 VDC from panel power supply → internal DC/DC converter → display and logic boards
Network termination resistors (120 Ω) required at both physical ends of the DH-485 trunk. AIC+ (1761-NET-AIC) or 1747-AIC modules used for network taps where required.
Sourcing & Quality Verification
Konmask.com applies a 4-step verification protocol to every Allen-Bradley unit before shipment:
- Step 1 — Documentation Audit: Supplier chain-of-custody records, original packaging inspection, and date-code cross-reference against Rockwell Automation production records.
- Step 2 — Physical Inspection: Label authenticity check (holographic markings, font consistency, catalog number format), connector condition, and housing integrity assessment.
- Step 3 — Functional Power-On Test: Unit powered at 24 VDC; display initialization, keypad response, and DH-485 communication handshake verified using test PLC bench.
- Step 4 — Packaging & ESD Protection: Anti-static bag, foam-lined carton, and humidity indicator card sealed prior to dispatch.
Units failing any step are quarantined and not listed for sale. Authenticity guarantee backed by 12-month warranty on verified units.
Procurement Process
- Submit RFQ: Email support@konmask.com with quantity, required delivery date, and destination country.
- Receive Quote: Pricing, lead time, and availability confirmed within 24 business hours.
- Order Confirmation: Purchase order or online checkout accepted. Proforma invoice issued for wire transfer orders.
- Quality Hold & Dispatch: Unit passes 4-step verification; tracking number issued within 1–3 business days.
- Delivery & Support: DHL / FedEx / UPS express available. Post-delivery technical support via email or WhatsApp.
Technical FAQ
Q: Is the 2711-K5A8 compatible with ControlLogix or CompactLogix PLCs?
A: Not natively. The 2711-K5A8 uses DH-485 protocol, which is not supported by Logix-family controllers without a protocol converter (e.g., ProSoft MVI56-DFNT or similar bridge). For Logix platforms, consider PanelView Plus or PanelView 800 series.
Q: Can I reuse my existing PanelBuilder application file?
A: Yes. Application files created in PanelBuilder 1400e or PanelBuilder32 for the 2711-K5A8 catalog number are directly transferable via the terminal’s serial programming port.
Q: What is the difference between 2711-K5A8 and 2711-K5A1?
A: The suffix digit indicates the communication port type. “A8” denotes DH-485 (RS-422); “A1” denotes RS-232. Verify your network wiring before ordering.
Q: Do you supply the programming cable?
A: Yes, 1747-CP3 or equivalent programming cables are available. Please specify when submitting your RFQ.
Q: What warranty applies to refurbished units?
A: All verified units carry a 12-month functional warranty. DOA (Dead on Arrival) units are replaced at no cost within 30 days of delivery.
Q: Can you supply multiple units for a plant-wide spare parts program?
A: Yes. Volume pricing and blanket order agreements are available. Contact us for a tailored spare parts program proposal.
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