IT3402L Triple Channel Linear Encoder Kit
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IT3402L Triple Channel Linear Encoder Kit Product data Features • Highly miniaturized encoder • Differential inductive sensing principle • Insensitive to magnetic interference fields • Robust against oil, water, dust, particles • Ultra-thin encoder and scale (total < 2 mm) • Optional with cable, connector and holder Applications • Linear actuators • Industrial / laboratory / office automation • X-Y stages • Pick & Place assembly equipment • High-speed motion control • Mechatronics applications Key Specifications Encoder holders Different encoder holder options are available and can be selected in Table 6. The encoder holder type A (Fig. 5) may be mounted on any substrate using 4 screw-holes. It has a strain relief for the cable. Metallic or non-metallic substrate Description The IT3402L incremental encoder kit consists of an encoder and a linear scale (Fig. 1). The encoder consists of two integrated circuits in a PCB housing. It provides incremental A and B output signals in quadrature and an Index signal, which is synchronous to A and B (Fig. 2). The linear scale is a PCB with passive copper strips. Resolution, maximum speed and airgap The resolution and the maximum speed of the encoder are user-programmable or can be programmed ex-factory. The resolution depends on a filter setting that limits the maximum speed of the encoder vs. the scale. The resolution also depends on the maximum distance between the encoder and the scale. Tables 2 and 3 allow the configuration of resolution and maximum speed for a certain maximum air-gap. Scales Scales with different dimensions and index-positions are available (Fig. 4) and are selected in Table 5. The scale may be mounted on any substrate, using an edge for accurate positioning in front of the encoder. The encoder holder type B (Fig. 3) may be mounted on any substrate. Use half-holes on encoder PCB housing and alignment pins for accurate positioning. Encoder Encoder-Holder type B Metallic or non-metallic substrate The encoder without holder may be mounted on non-metallic substrates. Use half-holes on encoder housing and alignment pins for accurate positioning. Encoder cable and connector The encoder is supplied with a flat cable of pitch 1.27 mm and a connector (Fig. 6). The cable type and length and the connector type are selected in Tables 7 and 8. 3D models of encoder, holders and scales STEP and IGES 3D models available on www.posic.com.

Specifications Recommended Operating Conditions Linearity For high-resolution high-precision applications, it is possible to linearize the encoder by means of a Look-Up Table (LUT) that is located inside the encoder. The LUT can be programmed in volatile or in non-volatile memory by means of the Evaluation and Programming Tool (EPT) or it can be pre-programmed ex-factory. The LUT option is selected in Table 4. Definitions Airgap Cycle CPP °e Phase shift O Pulse width P State width S Fig. 2 Encoder output signals A and B in quadrature and Index. Distance between encoder and scale in...

Dimensions of IT3402 encoder on encoder-holder type B. The “Encoder center” must be centered with respect to the width of the linear scale (Fig 4).

Ordering information Ordering code: IT3402L-ABBCCD-EEEEE-F-GGG-HH BB Maximum speed Table 2 D Look-Up Table Table 4 EEEEE Linear scale Table 5 F Encoder holder Table 6 * Connector temperature range -20 to 100°C © Copyright 2019 POSIC. All rights reserved. No part of this document may be reproduced without the prior written consent of POSIC. Products and companies mentioned in this document may be trademarks or registered trademarks of their respective owners. Information in this document is believed to be accurate and reliable and may be changed without notice. No responsibility is assumed...