PRODUCT DETAILS
25B-D010N104 — 525 Series AC Drive, 480V Three-Phase, 4 kW / 5 HP
The 25B-D010N104 is a 4 kW / 5 HP variable frequency drive from the 525 series, accepting 380–480V AC three-phase input and delivering 10A output current. It carries the full 525 platform feature set as standard: dual-port EtherNet/IP, sensorless vector control, hardwired Safe Torque Off, and a peripheral option port. At 5 HP, this is one of the more common power ratings in machine automation — the 525 platform brings network-native connectivity to that range without the add-on cards that other drive families require.
Specifications
| Parameter | Value |
|---|---|
| Part Number | 25B-D010N104 |
| Series | 525 Series |
| Power Rating | 4 kW / 5 HP |
| Input Voltage | 380–480V AC, Three-Phase |
| Output Current | 10 A |
| Output Frequency | 0–500 Hz |
| Control Modes | V/Hz, Sensorless Vector (SVC) |
| Communication | EtherNet/IP dual-port (built-in) |
| DLR Support | Yes |
| Option Port | 1 × peripheral expansion slot |
| Digital Inputs | 6 × 24V DC (programmable) |
| Analog Inputs | 2 × 0–10V / 0–20 mA (selectable) |
| Relay Output | 1 × Form C (NO + NC) |
| Safe Torque Off | Category 3 / PLd (hardwired) |
| Enclosure | IP20 / Open Type |
| Operating Temperature | −10°C to 50°C (derate above 40°C) |
| Approvals | UL, CE, RCM |
EtherNet/IP Dual-Port — What It Delivers
The two onboard EtherNet/IP ports enable Device Level Ring (DLR) topology natively. In a DLR layout, this drive daisy-chains to the next — one cable in, one cable out — eliminating the need for a switch at each drive node. A ring supervisor in the PLC's EtherNet/IP module or a managed switch manages the ring, providing automatic fault rerouting if a cable segment fails. For machine lines with multiple drives distributed along a conveyor or processing system, DLR cuts the Ethernet infrastructure to a single continuous cable run rather than individual home runs to a central switch.
Over EtherNet/IP, the controller gets full real-time access to the drive: speed reference, direction, fault reset, and run/stop as outputs; output frequency, output current, DC bus voltage, drive temperature, and active fault code as inputs. Set a static IP via the HIM before connecting to the production network — the default BOOTP assignment can change after a power cycle on networks without a permanent BOOTP mapping.
STC Wiring and Safe Operation
The hardwired STO inputs (S1, S2, +24V) provide Category 3 / PLd without any option card. Wire both inputs to a safety relay's force-guided output contacts. Do not jumper them — removing the STO function eliminates the safety interlock entirely. The Form C relay output (NO + NC contacts) is a useful feature at this power level: configure it as "At Speed" and the NC contact provides a run-confirmation signal even when the drive is de-energized, supporting fail-safe interlock logic in the machine's control circuit.
FAQ
Q: Does SVC mode require an encoder at 5 HP?
No. Sensorless vector estimates speed from voltage and current measurements without a feedback device. Run a static autotune with accurate motor nameplate data before enabling SVC. For closed-loop vector requiring full torque at near-zero speed, the encoder option card via the peripheral port is available.
Q: Can the drive participate in a DLR ring without any additional hardware?
Yes — both ports and the DLR ring node capability are built in. A DLR ring supervisor (from the PLC's EtherNet/IP module or a managed switch) is still required to manage the ring, but the drive itself contributes no additional hardware.
Q: What is the purpose of the peripheral option port?
The option port accepts plug-in modules that extend the drive's capability: an encoder feedback card for closed-loop vector, a secondary communication card for a second fieldbus protocol, or expanded I/O. It's an upgrade path built into the base drive without requiring a platform change.
Q: How should STO wiring be verified before commissioning?
With the drive powered but no run command active, de-energize the safety relay to open the STO inputs. Verify the drive's STO status bit confirms safe state. Re-energize and verify the drive can accept a run command. Document this test before the machine is put into production.



