Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.
Omron NX-PD1000 — Additional NX Bus Unit Power Supply
SKU: NX-PD1000USD 33.00
Additional NX-series unit power supply, 24 VDC input (20.4–28.8 VDC), provides up to 10 W extra NX-Bus unit power when EtherCAT coupler
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Product Overview
The Omron NX-PD1000 is an additional unit power supply for the NX-series modular I/O system. manufactured by Omron Corporation. Hengyixin Automation ships this power supply from Xiamen recommended in the related products row below. Specifications on this page were checked against Omron's NX-series System Unit datasheet.
It accepts 24 VDC input (allowable 20.4 to 28.8 VDC) and provides up to 10 W of extra NX-Bus unit power to downstream NX Units when the host EtherCAT Coupler (NX-ECC201, NX-ECC202, or NX-ECC203) has reached its unit-power budget. The unit is only 12 mm wide — the same footprint as a single NX I/O Unit — and uses the same screwless push-in terminal block as the rest of the NX family (8 terminals: 2 × IOV/V+, 2 × IOG/V−, 2 × FG, plus a duplicate pair for through-wiring).
For current budgeting: each downstream NX Unit's unit-power draw is listed in the NX Unit's datasheet under 'Current consumption (Unit power supply)'.
Key Features
- Through-wiring current capacity 4 A maximum
- Additional NX-Bus unit power supply, 24 VDC input
- 12 mm wide — same footprint as a standard NX I/O Unit
- Provides up to 10 W extra NX-Bus unit power downstream of the EtherCAT coupler
- SKU: NX-PD1000
- Series: NX-series System Unit
- Voltage: 24 VDC
Best-Fit Applications
- Splitting unit power across multiple cascaded NX-PD1000 units in a 40+ NX Unit slice
- Phased migration of an NX slice — add NX-PD1000 in the middle as new Units are appended
- Adding unit power to an NX slice with >10 NX Units that has exceeded NX-ECC201 / NX-ECC202 unit-power capacity
Buying Checklist
- Pick NX-PD1000 when NX Unit power capacity is exhausted
- Pick NX-PF0630 when I/O power is exhausted at the 4 A level
- Pick NX-PF0730 when I/O power is exhausted at the 10 A level
Technical Specifications
| Model | NX-PD1000 |
|---|---|
| Series | NX-series System Unit |
| Type | Additional NX Unit power supply |
| I/O System | NX I/O Bus (EtherCAT slave slice) |
| Input Voltage | 24 VDC (allowable 20.4 to 28.8 VDC) |
| NX-Bus Power Supply Capacity | 10 W max (to downstream NX Units) |
| NX Unit Power Supply Efficiency | 70 % typical |
| Through-Wiring Current Capacity | 4 A max (including downstream) |
| Dimensions | 12 (W) × 100 (H) × 71 (D) mm |
| Operating Temperature | 0 to +55 °C |
| Mounting | NX DIN-rail segment, locked via orange slider |
Manufacturer documentation
Omron's own product page, where the manufacturer's current specification and lifecycle information are published. We are an independent distributor and cannot mirror those documents; the link goes to Omron's site.
FAQ for NX-PD1000
When do I need an NX-PD1000?
You need an NX-PD1000 when your NX EtherCAT slice has more NX Units than the coupler's NX-Bus unit-power budget can supply. Symptoms in Sysmac Studio are NX Units showing 'Unit power supply error' in the Coupler/Unit diagnostics tab, Units randomly appearing and disappearing from the I/O Map, or NX Units that fail to register at all when you try to add them to the slice.
What is the difference between NX-PD1000, NX-PF0630, and NX-PF0730?
Three different power-injection functions. NX-PD1000 (this SKU) injects NX-Bus unit power — it powers the internal logic, EtherCAT communication, and microcontrollers of the downstream NX Units. NX-PF0630 injects I/O power — it powers the field side of digital inputs, digital outputs, analog signals, and encoder interfaces — at up to 4 A. NX-PF0730 does the same I/O power injection at up to 10 A.
Can the NX-PD1000 be used with an NX102 or NX502 CPU instead of an EtherCAT Coupler?
Technically yes — the NX-PD1000 will install in any NX slice and inject unit power — but it is unnecessary in a CPU-based slice. The NX102, NX502, and NX1P2 CPU units already supply unit power themselves; their limitation is on the I/O power side, which is why NX-PF0630 and NX-PF0730 are commonly added to CPU-based slices but NX-PD1000 is rarely needed. The NX-PD1000 is essentially an EtherCAT-Coupler-slice solution for the unit-power-exhaustion problem.
Does the NX-PD1000 need a separate 24 VDC supply?
Yes — the NX-PD1000 accepts 24 VDC input on its screwless push-in terminal block (IOV/V+ and IOG/V−) and does not derive its input from the NX-Bus. In practice you wire it to the same cabinet 24 VDC bus that powers the EtherCAT Coupler (typically an S8VK-G12024 or S8VS-12024), with its own fuse or branch breaker so you can isolate it for maintenance. The FG terminals should be grounded at one end of the cabinet ground bus to ensure EMC compliance.
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