CJ1W-OD211

Product information

Product Overview

The CJ1W-OD211 is a 16-point digital output unit for the Omron CJ I/O Bus — a Basic I/O Unit with NPN (sinking) transistor outputs rated 0.5 A per point at 20.4 to 26.4 V DC.

This page is written for buyers and maintenance engineers sourcing CJ1W-OD211 as a new part or a replacement. Every specification below is taken from Omron’s own published catalogue data for this model; no third-party or estimated figures are used, and where Omron publishes two different figures for the same parameter, both are shown.

Omron catalogue position: Automation Systems › Programmable Logic Controllers (PLC) › CJ2 › CJ Digital I/O Units. Official catalogue code for this model: CJ1W-OD211.

Why Buyers Specify This Model

16 NPN transistor outputs, 0.5 A per point

Solid-state outputs switch at 0.5 A per point — fast enough for solenoid valves, indicating lamps and small contactors, with no relay wear.

Dedicated IOV and IOG terminals

Omron’s data lists one IOV (V+) and one IOG (V-) terminal, so the output supply is brought to the unit directly rather than shared with the backplane.

Not short-circuit protected

Omron’s catalogue states the outputs are not short-circuit protected. External fusing or a protected 24 V supply is the buyer’s responsibility — this is stated plainly so it is not discovered after a field fault.

Detachable screw terminal block, 31 mm wide

Standard CJ Basic I/O footprint: 31 mm × 90 mm × 89 mm, 61 g.

Technical Specifications (Official Omron Catalogue Data)

Parameter	Official value
I/O system	CJ I/O Bus
Expansion unit type	Basic I/O Unit
Type of module	Digital I/O
Number of digital inputs	0
Number of digital outputs	16
Digital output type	NPN
Permitted voltage at output	20.4-26.4 V
Output current	0.5 A
Short-circuit protected outputs	No
I/O connection type	Screw
Number of I/O connectors	1
Detachable I/O terminal block	Yes
Suitable for safety functions	No
Number of IOV (V+) terminals	1
Number of IOG (V-) terminals	1
Number of COM terminals	0
Product Height (unpacked)	90 mm
Product Width (unpacked)	31 mm
Product Depth (unpacked)	89 mm
Product Weight (unpacked)	61 g

Source: Omron official product catalogue data for CJ1W-OD211, published at industrial.omron.eu. Values are reproduced as published by Omron. Where the official data carries a condition or footnote, the headline figure is shown — request the official datasheet for the qualified figure.

Lifecycle & Availability

Omron’s official product data for this model carries no end-of-production or discontinuation notice — it is listed as a current catalogue item. That is the lifecycle status as published by Omron, not a stock statement on our side.

Availability, condition of supply and lead time are quoted per enquiry because they depend on quantity and on where the goods are held. Tell us the quantity and the date you need it and we will answer with a firm position rather than a promise.

Official Documentation

These are Omron’s own documents for this model and its family. Download them directly from Omron’s document server:

• Datasheet: cj1w-oc oa od datasheet en
• Datasheet: p059 cj2-series programmable controller datasheet en
• Manual: w472 cj2 cpu units hardware users manual en

Full technical detail — conversion periods, wiring diagrams, derating and installation requirements — is in these documents. If you need a specific figure we do not show here, ask and we will point you to the exact page rather than paraphrase it.

Ordering This Part

Send us the full catalogue number CJ1W-OD211, the quantity, your delivery address and the date you need the goods. If the part is a replacement, attach a photograph of the existing unit’s nameplate — it removes any doubt about the revision, the output type or the supply voltage, which are the three things that most often cause a wrong part to be shipped.

We do not publish stock, condition or lead time as fixed figures here, because they change: they are quoted per enquiry against the quantity and date you actually need. If a machine is down, say so and give us the required window — that is the information that determines how we source it.

Frequently Asked Questions

Is this sinking or sourcing?

NPN — the outputs sink to 0 V, which is the convention for the majority of Asian and European machine builds. If your common is positive, state it on the enquiry and we will confirm the correct alternative in the range.

Can it drive a contactor coil directly?

At 0.5 A per point it can drive small relays and contactors only if the coil inrush stays within rating. For larger coils use an interposing relay — and remember the outputs are not short-circuit protected.

What pairs with it?

CJ1W-ID211 is its 16-point input counterpart in the same footprint, and CJ1W-OD211 units are commonly specified alongside the CJ2M CPU series.

Availability?

Current production per Omron’s official catalogue data.