Configured for redundant ModuleBus cable adaptation in ABB S800 I/O systems, the ABB TB846 3BSE021439R1 (TB846 Dual Modulebus Inlet Module) provides direct physical connection and signal routing between redundant ModuleBus communication paths.
Hardware Specifications
Parameter
Specification
Model
TB846 3BSE021439R1
Brand
ABB
Product Type
Dual Modulebus Inlet Module
Article Number
3BSE021439R1
Spare Model
TB846
System Platform
ABB S800 I/O
Function
Redundant ModuleBus Cable Adaptor
Data Rate
1 Mbit/s
Origin
Sweden
Weight
0.04 kg
Dimensions
1.6 x 5.4 x 5.6 cm
Operating Temp
-20 deg C to +70 deg C
Storage Temp
-40 deg C to +85 deg C
Humidity
5 - 95 % RH, non-condensing
Mechanics
S800
ABB S800 ModuleBus Communication Interface
The TB846 operates as a passive communication interface component within the ABB S800 I/O architecture. It manages redundant ModuleBus cable connections and supports communication transfer at a 1 Mbit/s data rate.
Additionally, the module supports ABB backplane bus communication velocity management within S800 I/O configurations. The hardware design enables I/O density scaling by allowing redundant communication paths between connected S800 components.
The TB846 uses the S800 mechanical design format and maintains electrical separation between ModuleBus connection paths. Therefore, installation practices must maintain proper cable routing and grounding according to ABB system documentation.
Frequently Asked Questions
Q: What is the primary function of the ABB TB846 module? A: The TB846 functions as a Dual Modulebus Inlet Module and provides redundant ModuleBus cable adaptation for ABB S800 I/O systems.
Q: Does the TB846 contain active processing functions? A: No. The TB846 is a communication interface component and does not operate as a CPU or signal processing module.
Q: What environmental conditions support TB846 installation? A: The module operates from -20 deg C to +70 deg C and supports 5 - 95 % RH non-condensing humidity conditions.
Field Installation Guidelines
Install the TB846 according to ABB S800 system installation procedures. Verify that ModuleBus cables are correctly seated and mechanically secured before system startup.
Keep communication cables separated from high-voltage power wiring to reduce electromagnetic interference. Connect cable shielding according to the applicable ABB grounding recommendations.
Before replacing or installing the module, confirm system power status and verify the permitted hot-swap conditions of the connected S800 configuration.
