HIPROM 1788HP-EN2PA – PROFIBUS PA to PROFIBUS DP Linking Device | HIPROM HP Series
Engineering Background
In process automation environments, PROFIBUS PA field instruments operate on a two-wire, intrinsically safe bus at 31.25 kbit/s, while the plant backbone typically runs PROFIBUS DP at up to 12 Mbit/s. Bridging these two segments without signal degradation or topology compromise demands a purpose-built coupler — not a generic gateway. The HIPROM 1788HP-EN2PA was engineered precisely for this role, delivering transparent, deterministic data exchange between PA field devices and DP master controllers in refinery, chemical, and power-generation applications.
Product Positioning
The 1788HP-EN2PA is HIPROM’s flagship HP-Series linking device, designed for procurement engineers who require IEC 61158-compliant PA/DP coupling with DIN-rail form factor, hazardous-area compatibility, and zero-configuration segment management. It is the preferred drop-in replacement for legacy couplers in brownfield DCS/PLC upgrades where rack space and commissioning time are constrained.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 1788HP-EN2PA |
| Manufacturer | HIPROM Technologies |
| Series | HP Series Linking Device |
| Function | PROFIBUS PA ↔ PROFIBUS DP Linking Device / Coupler |
| DP Interface | PROFIBUS DP-V1, RS-485, up to 12 Mbit/s |
| PA Interface | PROFIBUS PA, IEC 61158-2, 31.25 kbit/s |
| PA Segments | 2 independent PA segments per module |
| Max PA Devices per Segment | Up to 31 field devices |
| Power Supply | 24 V DC (18–32 V DC) |
| Power Consumption | ≤ 5 W (module only) |
| PA Bus Power Output | Integrated PA bus power conditioner per segment |
| Mounting | DIN-rail (EN 60715 TS35) |
| Housing | Polycarbonate, IP20 |
| Operating Temperature | -20 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5–95 % RH, non-condensing |
| Weight | 1,470 g (with packaging) |
| Certifications | CE, ATEX (Zone 2 / Zone 22 safe area coupling) |
| Standards Compliance | IEC 61158, IEC 61784, EN 50170 |
| HS Code | 8537.10 |
| Country of Origin | South Africa / International |
Proven Application Environments
- Oil & Gas: Upstream wellhead RTU panels and downstream refinery DCS segments requiring intrinsically safe PA field device integration
- Chemical Processing: Reactor loop instrumentation (pressure transmitters, flow meters, level sensors) connected via PROFIBUS PA to Siemens S7 / ABB 800xA DP masters
- Power Generation: Turbine control and boiler management systems with mixed PA/DP topology
- Water & Wastewater: Remote pump station automation with multi-drop PA sensor networks
- Pharmaceutical: Clean-room process control requiring deterministic cycle times and GMP-compliant data integrity
Engineering Advantages
- Transparent Bridging: Full DP-V1 acyclic services pass through to PA devices — enables online parameterization via FDT/DTM or EDDL without bus interruption
- Dual Independent PA Segments: Segment faults are isolated; one segment failure does not affect the other, maximizing plant uptime
- Integrated Bus Power Conditioning: Eliminates external PA power conditioners, reducing panel footprint and BOM cost
- DIN-Rail Form Factor: Fits standard 35 mm rail; compatible with existing marshalling cabinets without structural modification
- Plug-and-Play Commissioning: Auto-detects PA device GSD files; no manual address mapping required for standard PA profiles
- Wide Temperature Range: -20 °C to +60 °C ambient — suitable for outdoor enclosures in tropical and sub-arctic climates
System Architecture & Signal Flow
The 1788HP-EN2PA sits between the DP master (PLC/DCS) and up to two PA field device segments. The DP master addresses the linking device as a standard DP slave; the module then autonomously manages cyclic data exchange with all PA devices on its segments, presenting their process values and status bytes as a consolidated DP data frame. Acyclic DP-V1 read/write requests are forwarded transparently to the target PA device using the PA profile Class 1/Class 2 master services.
Typical topology: DP Master → RS-485 trunk → 1788HP-EN2PA → PA Segment A (up to 31 devices) + PA Segment B (up to 31 devices)
Sourcing & Quality Verification
- All units sourced directly from authorized HIPROM distribution channels or verified industrial surplus with full traceability documentation
- Pre-shipment inspection includes: visual inspection, label verification, firmware version check, and functional power-on test
- Original manufacturer packaging, serial number, and date code preserved
- Certificate of conformity and test report available upon request
- Anti-counterfeit verification: holographic label and HIPROM factory serial cross-reference available
Procurement Process
- Step 1 – Inquiry: Submit your BOM or part number to [email protected] or via the product page inquiry form
- Step 2 – Quote: Receive a formal quotation with lead time, unit price, and shipping options within 24 business hours
- Step 3 – Order Confirmation: Purchase order accepted via T/T bank transfer, PayPal, or credit card (Shopify Payments)
- Step 4 – Shipment: DHL / FedEx / UPS express with full tracking; EXW Xiamen or CIF destination available
- Step 5 – After-Sales: 12-month warranty on verified genuine units; technical support via email and WhatsApp
Technical FAQ
Q: Is the 1788HP-EN2PA compatible with Siemens S7-300/400 DP masters?
A: Yes. The module presents itself as a standard DP-V1 slave and is fully compatible with Siemens CP 342-5, CP 443-5, and integrated DP interfaces on S7-300/400/1500 CPUs.
Q: Can it be used in ATEX Zone 1 hazardous areas?
A: The module itself is rated for safe-area (Zone 2) installation. For Zone 1 PA segments, use HIPROM’s certified Zener barrier or galvanic isolator accessories on the PA output terminals.
Q: What is the maximum cable length per PA segment?
A: Per IEC 61158-2, the maximum trunk length is 1,900 m (Type A cable) with spur lengths up to 120 m, subject to total bus capacitance limits.
Q: Does it support redundant DP configurations?
A: The 1788HP-EN2PA supports DP master redundancy when the DP master system provides redundant DP-V1 master functionality (e.g., Siemens H-System).
Q: What configuration tool is required?
A: Standard GSD file (available from HIPROM) is used in STEP 7, TIA Portal, or any IEC 61784-compliant engineering tool. No proprietary software required.
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