IT5602C Triple Channel Rotary Encoder Kit
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IT5602C Triple Channel Rotary 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 codewheel (total < 2 mm) • Optional with cable, connector and holder Applications • Brushed and brushless motors • Industrial / laboratory / office automation • Rotary stages • Robotics, assembly equipment Key Specifications Description The IT5602C incremental encoder kit consists of an encoder and a codewheel (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 codewheel 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 codewheel. The resolution also depends on the maximum distance between the encoder and the codewheel. Tables 2 and 3 allow the configuration of resolution and max speed for a certain maximum air-gap. Codewheel The codewheel is shown in Fig. 4 and is selected in Table 5. The codewheel may be mounted on a hub, using a rim of 0.1 to 0.2 mm for accurate positioning in front of the encoder. Encoder assembly The encoder can be assembled by reflow soldering on a rigid or flexible PCB. Optimum performances are obtained by following the recommended schematic (Fig. 5) and footprint (Fig. 6). In particular, there should be no copper traces or metal objects behind the encoder up to a distance of 3 mm in order to avoid any influence on the measured position. If this is not possible, a blank copper layer behind the encoder (rear-side of the PCB) may be envisaged and/or a linearization using the on-chip look-up table (LUT). Encoder holder The encoder holder type A is available (Fig. 7) and can be selected in Table 6. It includes the encoder and the external components according to the recommended schematic (Fig. 5). The encoder holder can be mounted on any substrate using 4 screw holes Encoder cable and connector The encoder on holder can be supplied with a flat cable of pitch 1.27 mm and a connector (Fig. 7). The cable length and the connector type are selected in Tables 7 and 8. Encoder programming The Evaluation and Programming Tool (EPT) including an interface board and the ASSIST software is available for the linearization and programming of the encoder. 3D models of encoder, holders and codewheels 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 codewheel in...

Codewheel type Readout Radius = position of Encoder Center (Fig. 3) Codewheel thickness 0.73 mm +/- 10%

BB Maximum speed Table 2 D Look-Up Table Table 4 EEEEE Codewheel Table 5 F Encoder holder Table 6 Table 1: Orientation. Arrows indicate direction of move _ ment of codewheel with rising edge A prior to B. Table 2: Maximum speed *Max speed valid at 25°C, temp. derating in specs, page 2. Lower Max speed leads to a lower jitter of the A/B outputs. © 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...