Omron and Autonics Encoder Alternatives: VXT Cross-Reference Guide

When an encoder fails on a running machine, the first question is usually "what can replace it today?" Omron and Autonics encoders are among the most widely installed in India, so they are also the models we are asked to match most often. This guide shows how to read their model numbers, what to check before replacing, and which VXT encoder fits each common type.

Step 1: Decode the model number you have

Omron E6B2-C (40 mm)

The output type is in the suffix:

• E6B2-CWZ6C: NPN open collector (published supply 5 to 24 V DC).
• E6B2-CWZ5B: PNP open collector (12 to 24 V DC).
• E6B2-CWZ3E: voltage output (NPN with pull-up).
• E6B2-CWZ1X: line driver (RS-422 compatible, 5 V DC).

The resolution is printed after the model, for example "1000P/R", together with the cable length, for example "2M".

Omron 50 mm encoders

Omron's E6C2-C is a slim 50 mm encoder (for example E6C2-CWZ6C, NPN open collector), and the E6C3-C is a heavier-duty 50 mm series with an 8 mm shaft.

Autonics E40S, E50S and E58

Autonics model codes follow a clear pattern, for example E50S8-1024-3-T-24:

• E50S8: series and size (50 mm housing, 8 mm shaft). E40S6 means 40 mm with a 6 mm shaft; E58SC10 means a 58 mm clamping-flange type with a 10 mm shaft.
• 1024: pulses per revolution.
• 3: output phases A, B, Z. 6 means A, /A, B, /B, Z, /Z (line driver).
• T: output type. T = totem pole, N = NPN open collector, V = voltage output, L = line driver.
• 24: supply 12 to 24 V DC. 5 means 5 V DC.

Step 2: The cross-reference table

Existing model (type)	Output	Matching VXT model
Omron E6B2-CWZ6C 500P/R	NPN open collector	VXT-E40S06-0500-NPN
Omron E6B2-CWZ6C 1024P/R	NPN open collector	VXT-E40S06-1024-NPN
Omron E6B2-CWZ6C 360P/R (where space is tight)	NPN open collector	VXT-E38S06-0360-NPN (38 mm, A/B only)
Omron E6B2-CWZ5B 1000P/R	PNP open collector	VXT-E40S06-1024-PNP (update PLC scaling from 1000 to 1024)
Omron E6B2-CWZ1X 1024P/R	Line driver	VXT-E40S06-1024-L
Autonics E40S6-1024-3-N-24	NPN open collector	VXT-E40S06-1024-NPN
Autonics E40S6-500-3-N-24	NPN open collector	VXT-E40S06-0500-NPN
Autonics E40S6-1024-6-L-5	Line driver	VXT-E40S06-1024-L
Autonics E50S8-1000-3-T-24	Totem pole	VXT-E50S08-1000-T
Autonics E50S8-1024-3-T-24	Totem pole	VXT-E50S08-1024-T
Autonics E50S8-2500-3-T-24	Totem pole	VXT-E50S08-2500-T
58 mm line driver, 6 mm shaft, 1024 PPR	Line driver	VXT-E58S06-1024-L
58 mm line driver, 10 mm shaft, high resolution	Line driver	VXT-E58S10-5000-L

Where your existing encoder uses a voltage output (Omron "3E" or Autonics "V"), a VXT totem pole model is usually the best substitute for 12 V and 24 V inputs, because it drives the line both high and low. Confirm with us if your receiver is a 5 V logic input.

Step 3: Check these five things before you swap

• Mounting: compare the spigot diameter and the flange hole pattern. VXT-E40S06 and VXT-E38S06 use a ø20 mm spigot with 3 × M3 on a ø30 mm pitch circle. VXT-E50S08 uses a ø30 mm spigot with 3 × M4 on ø40 mm. VXT-E58 uses a ø36 mm spigot with 3 × M4 on ø48 mm.
• Shaft diameter: 6, 8 or 10 mm. Your coupling bore must match.
• Output type: NPN, PNP, totem pole or line driver must suit the input. This matters more than the brand.
• PPR: match it, or update the scaling in the PLC or the electronic gear in the drive.
• Supply voltage: 8 to 26 V DC for VXT NPN, PNP and totem pole models; 5 V DC for line driver models.

Other brands we are asked to match

Customers also bring us encoders from Hengstler, Kübler, Sick, Baumer, Koyo and Pepperl+Fuchs. The same five checks apply. Send us a photo of the label and the flange, and we will suggest the closest VXT model.

Why switch to VXT?

• Equivalent outputs for the most common Omron and Autonics types.
• Up to 300 kHz response frequency across the range.
• Wide 8 to 26 V DC supply on open collector and totem pole models.
• IP54 protection with a 2 m shielded cable.
• Clear datasheets with wire colours, dimensions and timing.
• Supply across India with selection and wiring support, and a 1-year warranty.

Frequently Asked Questions

What is the VXT equivalent of Omron E6B2-CWZ6C?

For 1024 PPR, the VXT-E40S06-1024-NPN; for 500 PPR, the VXT-E40S06-0500-NPN. Both are 40 mm encoders with a 6 mm shaft and NPN open collector output. Check the mounting hole pattern against your bracket.

What is the VXT equivalent of Autonics E50S8-1024-3-T-24?

The VXT-E50S08-1024-T: 50 mm housing, 8 mm shaft, 1024 PPR, totem pole output with A, B and Z channels.

Can I replace a line driver encoder with an NPN encoder?

Only if the receiver accepts single-ended NPN signals. Servo drives and RS-422 inputs need a line driver encoder such as VXT-E40S06-1024-L or VXT-E58S10-5000-L.

What if my PPR is not listed?

Contact us with your required PPR, size and output. We will advise the closest available VXT model or the scaling change needed.

Get a matching VXT encoder

Send us the model number or a label photo of your current encoder. Contact us for a cross-reference, datasheet, pricing and availability anywhere in India.

Omron, Autonics, Hengstler, Kübler, Sick, Baumer, Koyo and Pepperl+Fuchs are trademarks of their respective owners. They are mentioned for cross-reference only; VXT is not affiliated with, endorsed by or sponsored by these companies. Always verify dimensions and specifications against your application before replacing.