Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.
Omron NX-OD5121-5 — NX 16-Pt NPN Output, MIL, 30 mm
SKU: NX-OD5121-5USD 72.00
Omron NX-OD5121-5 NX-series 16-point NPN transistor output with MIL connector, 24 VDC, 0.5 A/point. In stock, China shipping.
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Product Overview
The Omron NX-OD5121-5 is the NX-series 16-point NPN transistor output unit with MIL connector, manufactured by Omron Corporation. Hengyixin Automation stocks this controller option board in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports. Specifications on this page were checked against Omron's NX-series I/O System brochure (R183).
It plugs into the NX I/O bus behind an NX-ECC201 EtherCouCoupler, NX102, or NX1P2 CPU and gives 16 NPN outputs at 0.5 A per point, 2 A per unit. Load voltage 10.2 to 28.8 VDC; rated 24 VDC. ON / OFF response 0.1 ms / 0.8 ms max. Leakage current 0.1 mA max; residual voltage 1.5 V max. Photocoupler isolation to 510 VAC for 1 min.
Connection is a MIL20 plug (not included); use XW2D-20G6, XW2K-20G-T, or XW2Z-xxxxDL-L to land wires. The slice is 30 mm wide, 100 x 71 mm, 80 g. Synchronous or Free-Run refreshing. SIL None. For the PNP sibling at the same MIL connector pick NX-OD5256-5. For a 32-point NPN MIL output pick NX-OD6121-5.
Key Features
- NX-series 16-point NPN (sinking) transistor output unit with MIL20 connector (not included), 30 mm wide body
- 24 VDC rated / 10.2 to 28.8 VDC load voltage range, 0.5 A per point and 2 A per unit, 0.1 ms ON / 0.8 ms OFF response
- Photocoupler isolation to 510 VAC for 1 min, leakage current 0.1 mA max, residual voltage 1.5 V max
- Synchronous or Free-Run refreshing, NX unit power 0.65 W max, 30 x 100 x 71 mm, 80 g, SIL None (not for safety)
- SKU: NX-OD5121-5
- Series: NX-series Digital Output Unit (NX-OD family) on NX I/O Bus and EtherCAT Coupler
- Voltage: 24 VDC
Best-Fit Applications
- Driving 16 solenoid valves on a small machine where the XW2D-20G6 terminal block lands the field wiring to the MIL20 connector
- Replacing a 16-point relay output on a legacy Omron C200H rack with an NX-ECC201 EtherCAT Coupler and an NJ501-1300 Sysmac CPU
- Spare replacement on a labeling machine where the original NX-OD5121-5 was lost and Sysmac Studio tag database points at the same I/O map
Buying Checklist
- Pick the NX-OD5121-5 when the panel needs 16 NPN (sinking) outputs on a 30 mm wide slice with a MIL connector.
- Pick the NX-OD5121-1 instead when the field wires need M3 screw terminals instead of a MIL connector on the same 16-point NPN body.
- Pick the NX-OD5256-5 instead when the loads need PNP (sourcing) instead of NPN (sinking) at the same 16-point MIL connector body.
Technical Specifications
| Manufacturer | Omron Corporation (Japan) |
|---|---|
| Series | NX-series Digital Output Unit (NX-OD family) on NX I/O Bus and EtherCAT Coupler |
| Model / SKU | NX-OD5121-5 |
| Number of Outputs | 16 points, NPN (sinking) transistor, internal I/O common |
| Rated Voltage | 24 VDC; permitted load voltage 10.2 to 28.8 VDC |
| Output Current | 0.5 A per point; 2 A per NX unit |
| ON / OFF Response | 0.1 ms max ON / 0.8 ms max OFF |
| Leakage / Residual | Leakage current 0.1 mA max; residual voltage 1.5 V max |
| Connection | MIL20 connector (not included); mating cable XW2D-20G6 terminal block or XW2Z-xxxxDL-L pre-wired cable |
| Isolation / Power | Photocoupler isolation, 510 VAC 1 min between I/O and internal circuit; NX unit power 0.65 W max |
| Protection | Omron's catalogue records Short-circuit protected outputs: FALSE; no disconnection detection |
| Dimensions / Approvals | 30 (W) x 100 (H) x 71 (D) mm; 80 g; IP20; SIL None (not for safety); CE, cULus, RCM, KC, Lloyd |
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-OD5121-5
What is the Omron NX-OD5121-5 used for?
It is the NX-series 16-point NPN transistor output unit with a MIL20 connector on a 30 mm wide body. Typical uses are driving 16 solenoid valves on a small machine, replacing a 16-point relay output on a legacy Omron C200H rack with an NX-ECC201 EtherCAT Coupler, and spare replacement on a labeling machine where the Sysmac Studio tag database points at the same I/O map.
NX-OD5121-5 vs NX-OD5121-1 - what is the difference?
Both are NX-series 16-point NPN transistor outputs with 0.5 A per point. The NX-OD5121-5 has a MIL20 connector on a 30 mm wide body. The NX-OD5121-1 has an M3 screw terminal block on a 12 mm wide body. Pick the NX-OD5121-5 when the panel uses pre-wired XW2Z cables or an XW2D terminal block; pick the NX-OD5121-1 when the panel lands wires directly with no extra cabling.
Does the NX-OD5121-5 need a MIL connector?
Yes. The MIL20 connector is not included with the slice. Order an XW2D-20G6 terminal block for direct screw landings, an XW2K-20G-T push-in wiring system, or an XW2Z-xxxxDL-L pre-wired cable (1 m, 2 m, 5 m lengths) for a remote MIL20 to open-end termination. The G70A-ZOC16-3 DC24 output terminal block is a 16-point NPN relay-output adapter that also fits.
What is the maximum switching current on the NX-OD5121-5?
0.5 A per point and 2 A per NX unit, at 24 VDC rated with a permitted load voltage range of 10.2 to 28.8 VDC. ON / OFF response is 0.1 ms ON max / 0.8 ms OFF max, which makes it suitable for high-speed pneumatic valves and small DC relays. Leakage current is 0.1 mA max; residual voltage is 1.5 V max.
Can the NX-OD5121-5 be used in a safety circuit?
No. The NX-OD5121-5 is marked SIL None and is not for safety functions. For emergency-stop output or a safety door switch on a NX-SL3300 / NX-SL3500 safety controller, use the G9SA-301 AC-DC24 safety relay or the NX-SOD400 safety output unit.
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