When a plant relies on industrial networking fieldbus, the gateway between drive-level SBus and PROFIBUS DP-V1 becomes the critical link. You have SEW MOVIDRIVE MDX61B or MOVITRAC B inverters on one side and a PROFIBUS DP-V1 control network on the other. Without the right fieldbus interface, those two worlds stay isolated and every drive becomes a manual integration project. The SEW-Eurodrive DFP21B/UOH11B is a dedicated PROFIBUS DP-V1 fieldbus interface built for exactly this job, and it is available in used condition at USD 155.00.
Quick verdict
The DFP21B/UOH11B is a targeted bridge for MOVIDRIVE MDX61B and MOVITRAC B inverters that need to join a PROFIBUS DP-V1 network. One gateway can serve up to eight inverters through SBus, which is a useful way to limit the number of interface modules in a multi-drive setup. The catch: this listing is for a used unit, and SEW-Eurodrive has discontinued the model.
Who it suits
This suits a controls or maintenance team working with SEW drives in a PROFIBUS DP-V1 environment. Because the gateway rides on SBus, you can keep the drive-to-drive wiring simple and make one PROFIBUS connection for up to eight inverters. It also works in a typical cabinet setting, with a 24 V DC supply, 0.3 A current draw, IP20 protection, and an operating temperature range of -10 to +60°C.
What stands out from the listed details
The capacity to reach up to eight inverters through SBus is the key differentiator. That single characteristic can change the hardware count in a multi-drive cell. The unit also carries the SEW-Eurodrive article number 18404073, which pins down exactly which fieldbus interface you are looking at. For a dedicated single-purpose gateway, the combination of PROFIBUS DP-V1, SBus, 24 V DC, and the stated protection and temperature profile covers most indoor industrial-control situations.
Meaningful trade-offs
The main trade-off is lifecycle: the listing is for a used unit, and SEW-Eurodrive has discontinued the model. That means you are buying a specific part for a specific protocol rather than a fresh production-line component. The listed price of USD 155.00 puts it in a practical range for a gateway that can bridge several drives, but the used, discontinued status means it suits a known, planned integration rather than a long-term company standard.
SEW-Eurodrive DFP21B/UOH11B PROFIBUS DP-V1 Fieldbus Gateway MOVIDRIVE MOVITRAC
Listed at USD 155.00, this used DFP21B/UOH11B has the SEW-Eurodrive article number 18404073 and provides a PROFIBUS DP-V1 interface for MOVIDRIVE MDX61B and MOVITRAC B inverters. Its 24 V DC input, 0.3 A draw, IP20 protection, and -10 to +60°C operating range describe a standard indoor control component. Choose it when you want one gateway to bring up to eight SBus-connected inverters onto PROFIBUS DP-V1. Keep in mind it is a used unit of a discontinued model, so the fit matters more than planning for broad future availability.
Bottom line
If your SEW drives speak SBus and your plant talks PROFIBUS DP-V1, the SEW-Eurodrive DFP21B/UOH11B is a straightforward way to connect them. At USD 155.00 it sits at a defined price point for a gateway that can serve multiple inverters, as long as you are comfortable with a used, discontinued unit.
