Omron CJ1W-CT021

Technical specifications

Manufacturer

Omron

Manufacturer part no.

CJ1W-CT021

Type

Counter module

Application

I/O module

Used with

CJ-series CPUs (CJ1, CJ2)

I/O system

CJ I/O Bus

Expansion unit type

Special I/O Unit

Type of module

Encoder input

Digital input type

Incremental encoder, Line driver (RS-422), Open collector

Digital output type

NPN, PNP

Number of encoder input channels

2

Max. encoder input frequency

500 kHz

Max. pulse output frequency

0 kHz

I/O connection type

Screw

Number of I/O connectors

1

Number of IOV (V+) terminals

2

Number of IOG (V-) terminals

2

Height

95.4 mm

Width

31 mm

Depth

83.6 mm

Weight

94 g

Technical documents (1)

• Omron product page CJ1W-CT021

Key features

• Number of I/O connectors: 1
• Expansion unit type: Special I/O Unit
• Size 95.4 mm high, 31 mm wide, 83.6 mm deep

About the Omron CJ1W-CT021

The Omron CJ1W-CT021 is a CJ1W encoder input unit. Omron describes it as: High-speed counter unit, 2 axes, 500 kHz, RS422 line driver or open collector input. Its specification table gives incremental encoder, Line driver (RS-422), Open collector inputs, NPN, PNP outputs and screw connection. Omron's European product page carries no end-of-production notice for it.

What is the CJ1W-CT021 used for?

The CJ1W-CT021 mounts on the CJ I/O bus beside a CJ-series CPU, which reads and writes its encoder input signals each cycle.

Lifecycle and successor

Active.

Before you order

What to photograph or confirm so the right unit is quoted.

Check the model number CJ1W-CT021 on the unit's label, with its lot number. Send us a photo of the label and we will confirm the details before quoting.