Application Scenarios
In a large automotive assembly plant, the control cabinet housing the main PLC was located in a central electrical room, but sensors and actuators were distributed across conveyor segments spanning over 50 meters of production floor. Rather than running hundreds of individual field wires back to the central cabinet—a costly and noise-prone approach—engineers deployed 750-628 modules at each remote conveyor segment. Each remote block terminated with a 750-627 End Module, connected via shielded Ethernet patch cable to the previous block’s 750-628 coupler. This architecture allowed the plant to extend the WAGO node by up to 10 stages, placing I/O modules directly at the point of use while maintaining a single logical fieldbus node. The transparent extension eliminated the need for additional fieldbus couplers and reduced commissioning time by an estimated 40%, as all remote I/O appeared as native modules to the central controller without complex gateway configuration.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 750-628 |
| Manufacturer | WAGO |
| Product Category | Bus Extension Coupler Module |
| System Series | WAGO-I/O-SYSTEM 750/753 |
| Function | Replaces fieldbus coupler/controller at a bus module block |
| Counterpart Module | 750-627 (End Module for bus extension) |
| Bus Connection | 2 x RJ-45 sockets (Input + Output) |
| Max Extension Stages | 10 stages for entire system |
| Max Distance | 5 m (standard); 10 m under specific manual conditions |
| Transmission Medium | Shielded copper cable (ETHERNET patch cable); 4 x 2 x 0.25 mm², twisted pair, double shielding, STP |
| Supply Voltage (System) | 24 VDC (-15% … +20%) |
| Current Consumption (5V System) | 150 mA |
| Total Current (System Supply) | 400 mA |
| Supply Voltage (Field) | 24 VDC via power jumper contacts |
| Current via Power Jumper Contacts | Max. 10 A |
| Isolation | 500 V system/field |
| Connection Technology | CAGE CLAMP® (0.08 … 2.5 mm² / 28 … 14 AWG) |
| Mounting | DIN-35 rail (EN 50022) |
| Dimensions (W x H x D) | 24 x 100 x 69.8 mm |
| Weight | Approx. 74.5 g |
| Protection Rating | IP20 |
| Operating Temperature | 0°C … +55°C |
