BUS EXTENSION COUPLER MODULE

Bus Extension Coupler Module


The 750-628 Coupler Module for Internal Data Bus Extension replaces the fieldbus coupler/controller on a module assembly. It is also the mating piece for the 750-627 End Module. Plug the connection cable into the top RJ-45 socket to establish the logical link to the fieldbus coupler/controller via the 750-627 End Module.
The extension is completely transparent for the fieldbus coupler/controller. All of the functions of the I/O module system are retained without any changes.
A further extension to the system is provided by the bottom RJ-45 socket. This enables the entire system to be extended by 10 stages.

The supply voltage for the field side and the internal electronics can be input separately. Both levels are electrically isolated from each other. Two diagnostic LEDs give information about the supply voltage for both the internal and field side. Two LEDs in the input socket indicate fault-free communication with the bus coupler. The module can be used as the last coupler module in the system (switch on matching resistor) or as a bridge between two I/O module assemblies.

Distance (max.): 5 m (10 m see manual); (end/coupler modules or coupler/coupler modules)

Transmission medium: Shielded copper cable (ETHERNET patch cable); 4 x 2 x 0.25 mm², twisted pair, double shielding, STP (Shielded Twisted-Pair)
Number of modules per node (max.): 64
Supply voltage (system): 24 VDC (-15 … +20 %); via pluggable connector (CAGE CLAMP® connection)
Current consumption (5 V system supply): 150mA
Total current (system supply): 400mA
Supply voltage (field): 24 VDC (-15 … +20 %); via power jumper contacts (power supply via CAGE CLAMP® connection; transmission via spring contact)
Input current (typ.) at nominal load (24 V): 200mA
Power supply efficiency (typ.) at nominal load (24 V): 76%
Isolation: 500 V system/field
Number of outgoing power jumper contacts: 3
Current carrying capacity (power jumper contacts): 10A