Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 3IF672.9 |
| Manufacturer | B&R (Bernecker + Rainer) |
| Product Type | Interface / Communication Module |
| Series / Platform | B&R BR 2005 System |
| Mounting Style | Plugs into CPU / IF module slot on 2005 backplane (e.g. 3BP151 12-slot) |
| RS232 Interface | 1 × RS232, configurable as online / config port |
| CAN Interface | 2 × CAN bus, galvanically isolated, max. 500 kBit/s |
| CAN Features | Object buffering on TX/RX sides (per 2005-family CAN behaviour) |
| Network Capability | CAN buses connectable to network (CANopen / proprietary CAN nodes) |
| Status Indicators | 2 LEDs for RX/TX on IF1; 1 TX LED each for IF2 and IF3 |
| Power Consumption | 2.0 W |
| Operating Temperature | -20 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C (typical for 2005 modules) |
| Typical Backplane Supply | 5 VDC from 2005 rack (via 3PS465.9 / 3PS477.9 PSU) |
| Certifications | CE (typical for B&R 2005 series) |
| Country of Origin | Austria (B&R headquarters, Eggelsberg) |
Main Features and Advantages
The B&R 3IF672.9 is purpose-built for the BR 2005 ecosystem, where rack space is tight, power budget is modest, and the application demands reliable fieldbus extension without stepping up to a full X20 or APC/PCC migration. Its standout features are the dual isolated CAN ports and the onboard RS232 service port, combined in a single narrow slice that draws only 2 W.
Dual CAN with galvanic isolation:
Most 2005-rack machines need at least one CAN segment for drives or remote I/O, but many also want a second CAN for a handheld terminal, encoder daisy-chain or a legacy device. The B&R 3IF672.9 delivers both in one slot, and the galvanic isolation on each CAN transceiver means you can hang devices with different ground references off the same rack without risking backplane noise or latch-up. This is particularly useful on retrofit projects where the 2005 CPU is being asked to talk to newer B&R ACOPOS drives or third-party CANopen slaves.
RS232 as online/config interface:
The RS232 port on the B&R 3IF672.9 is not just a debug stub — it’s the designated online interface for service laptops, panel PCs and commissioning tools. During commissioning, an engineer can plug in directly to monitor CAN traffic, push firmware or parameter sets, and validate node responses without disturbing the running CAN network.
LED-based diagnostics without software:
Three status LED groups give at-a-glance health: two LEDs on the RS232/CAN1 (IF1) path show active RX/TX, while single TX LEDs on the second and third interface paths confirm that CAN2 is alive. On a busy shop floor where opening Automation Studio isn’t the first step, these LEDs let a tech confirm “link up / frames moving” in seconds.
Low power, long life:
At 2.0 W, the module contributes minimally to the 2005 rack’s thermal load. The 2005 platform itself is mature and widely regarded as mechanically robust — the B&R 3IF672.9 inherits that build quality, with conformal-coated PCB typical of B&R industrial grades and a conservative -20 to +60 °C rating that handles most non-extreme environments.
Form-factor continuity:
Because the B&R 3IF672.9 uses the same mechanical footprint as other 3IF6xx modules (3IF671.9, 3IF622.9, 3IF661.9), a plant running mixed 2005 racks can stock one spare type and, with a quick firmware/config check, cover several interface variations. This simplifies MRO for lines that evolved over years with different 3IF variants.
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