CJ1W-ID211

Product information

Product Overview

The CJ1W-ID211 is a 16-point digital input unit for the Omron CJ I/O Bus — a Basic I/O Unit accepting 24 V DC field signals at 20.4 to 26.4 V. Two common terminals are provided for wiring flexibility.

This page is written for buyers and maintenance engineers sourcing CJ1W-ID211 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-ID211.

Why Buyers Specify This Model

16 inputs, 24 V DC

Permitted input voltage is 20.4 to 26.4 V DC, the standard industrial 24 V control range, with inputs configurable as PNP or NPN.

Two COM terminals

Omron’s catalogue lists two COM terminals on this unit, which matters when field devices are spread across more than one supply group on the machine.

Detachable screw terminal block

Terminal block is detachable for unit replacement without re-terminating every input.

Standard CJ Basic I/O footprint

31 mm wide, 90 mm high, 89 mm deep, 60 g — the narrowest CJ unit width, so 16 points costs very little rack space.

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	16
Digital input type	PNP/NPN
Permitted voltage at input	20.4-26.4 V
Number of digital outputs	0
Output current	0 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	0
Number of IOG (V-) terminals	0
Number of COM terminals	2
Product Height (unpacked)	90 mm
Product Width (unpacked)	31 mm
Product Depth (unpacked)	89 mm
Product Weight (unpacked)	60 g

Omron’s catalogue export also lists an “OFF/ON delay” field on this unit. That field is omitted here because it is a generic enumeration value rather than a device-specific input response time; the official CJ-series digital I/O specifications in the manufacturer’s data sheet should be used for timing calculations.

Source: Omron official product catalogue data for CJ1W-ID211, 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-id ia 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-ID211, 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

PNP or NPN — do I have to choose at order time?

No. Omron specifies the input type as PNP/NPN for this unit; sink/source behaviour is determined by how the common terminals are wired. State your sensor type and we will confirm the wiring scheme.

Is it the same width as the analog units?

Yes — 31 mm, identical to the CJ1W-AD041/AD081/DA041, so mixed digital and analog racks line up with uniform pitch.

Can I use it for safety inputs?

No. Omron’s catalogue classifies this unit as not suitable for safety functions. Safety inputs need a dedicated safety I/O family.

Production status?

Current. No end-of-production notice appears in Omron’s official data for this model.