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.

25B-D010N104 1PCS New 25BD010N104 525 4kw 5HP AC Drive