Description
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 3BDH000320R02 |
| Commercial Designation | LD 800HSE |
| Manufacturer | ABB Ltd (Process Automation Division) |
| Product Type | Foundation Fieldbus HSE/H1 Linking Device (Gateway) |
| HSE Interface | 1 channel, Ethernet 10BASE-T/100BASE-TX, RJ45, autosensing |
| HSE Transfer Rate | 10 Mbit/s or 100 Mbit/s |
| H1 Fieldbus Interfaces | 4 channels, FF H1, 31.25 kbit/s |
| H1 Termination | 3-pole pluggable screw terminals |
| H1 Coupling | Transformer-coupled, galvanically isolated |
| H1 Physical Layer Profile | Type 114, standard power signalling, separately powered, not intrinsically safe |
| Serial Interface | 9-pole Sub-D male, RS-232, 115.2 kbit/s (configuration / redundancy link) |
| Redundancy | Supported – dedicated serial link between primary and secondary units |
| Power Supply | 24 V DC (±20%), external PSU, separately powered H1 segments |
| Current Consumption | ≤ 200 mA @ 24 V DC (typical) |
| Mounting | 35 mm DIN rail (EN 60715) |
| Dimensions (L × H × W) | 47 × 131 × 111 mm |
| Weight | Approx. 0.4 kg |
| Protection Rating | IP20 |
| Operating Temperature | 0 °C to +55 °C (non-vertical mounting, free convection) |
| Storage Temperature | −20 °C to +70 °C |
| Relative Humidity | 0% to 95%, non-condensing |
| Coating | G3 coated per ANSI/ISA 71.04 / EN 60068-2-60 |
| Certifications | CE (EMC 2004/108/EC, LV 2006/95/EC, ATEX 94/9/EC); FCC Part 15 Class A; VCCI Class 2 |
| Hazardous Area (LD 800HSE Ex only) | UL Class I Div 2 Groups A–D; IECEx Ex nA IIC T4 Gc; ATEX II 3G Ex nA IIC T4 Gc |
Main Features and Advantages
Four independent H1 Link Active Schedulers
The core capability of the ABB 3BDH000320R02 is that each of its four H1 ports functions as an independent link master with its own Link Active Scheduler. This gives every segment deterministic, conflict-free bus arbitration without placing any scheduling load on the controller. Each port supports the full FF publish/subscribe mechanism with up to four sub-cycles, allowing time-critical process data to be delivered on a tighter schedule than non-critical information. Because the LAS resides on the linking device rather than on the AC 800M, plants can add H1 segments without increasing controller communication stack loading—a decisive advantage in large FF deployments.
Data republishing across links and to the HSE subnet
A distinctive feature of the ABB 3BDH000320R02 is its ability to republish process data from one H1 link into another, or from an H1 segment up to the HSE subnet. This enables control strategies to be distributed across multiple field devices and different controllers without involving IEC 61131 logic or running extra field wiring to collect data. Different controllers can access data on the same H1 link, opening up flexible load-balancing and data-acquisition separation strategies that would otherwise require additional hardware and cabling.
Transparent host configuration and Client/Server access
The ABB 3BDH000320R02 allows engineering personnel to configure, monitor, and diagnose connected H1 field instruments transparently from the 800xA host environment. Through Client/Server access to function blocks in H1 devices, parameters, signal values, and status can be read and written directly—eliminating the need for separate configuration tools and significantly reducing engineering and commissioning effort. This transparency is what allows the intelligence embedded in FF field devices to be fully exploited from the control room.
Redundancy for mission-critical availability
The ABB 3BDH000320R02 is qualified for redundant use: two linking devices can be connected to the same H1 links, with a dedicated serial redundancy link between primary and secondary units ensuring reliable automatic failover and continuous monitoring of redundancy status. Together with fault-tolerant Ethernet rings, this architecture delivers substantially higher FF field installation availability than long, single H1 links. It is particularly valuable in burner management, emergency shutdown, and other safety- or production-critical applications where uninterrupted fieldbus communication is mandatory.
Move H1 interfaces from the control room to the field
Because the linking device carries the H1 interfaces, it allows those interfaces to be relocated from the central control room out into the field. This shortens H1 trunk lengths dramatically, delivering significant savings in cable cost and installation labour. The compact DIN-rail form factor and G3 coating make the ABB 3BDH000320R02 suitable for installation in local field cabinets close to the instrument clusters it serves.
