ID4501C Dual ChannelRotary Encoder Kit
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ID4501C Dual Channel Rotary Encoder Kit Product data Features • • • • • • Highly miniaturized linear encoder in SMD-format Differential inductive sensing principle Insensitive to magnetic interference fields Robust against oil, water, dust, particles Programmable resolution and maximum speed Optional with cable, connector and holder Brushed and brushless motors Industrial and laboratory automation Rotary stages Robotics, assembly equipment High-speed motion control 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). Description The ID4501C incremental encoder kit consists of an encoder and a codewheel (Fig. 1). The encoder is an integrated circuit in a PCB housing in SMD-format. It provides incremental A and B output signals in quadrature (Fig. 2). The codewheel is a PCB with passive copper strips. The orientation of the encoder is selected in Table 1. 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. The resolution and maximum speed for a certain maximum air-gap are selected in Tables 2 and 3. Codewheel The codewheels are shown in Fig. 4 and are selected in Table 5. The codewheel may be mounted on a hub, using a rim for accurate positioning in front of the encoder. 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, holder and scales STEP models are available on www.posic.com.

ID4501C Specifications Recommended Operating Conditions Parameter Operating Temperature Supply voltage Radial play and eccentricity Airgap tolerance Electrical Characteristics Electrical characteristics over recommended operating conditions, typical values at VDD = 5.0 V, TA = 25°C. Parameter Supply current Maximum output frequency High level output voltage* Low level output voltage* Rise time, fall time If A is pulled up and B pulled down during power-up, the encoder enters into a test mode with a 50 kHz square wave on all outputs. Encoding Characteristics Encoding characteristics over...

Index (multiple) Internal supply Internal supply Fig. 3 Encoder dimensions (mm) and pin-out. “Encoder center” must be centered with respect to Readout Radius (see Fig. 4). Codewheel type Number of periods Inner Diameter ID (mm) * Readout Radius = position of encoder center ** Thickness tolerance +/- 10% of thickness Fig. 5 Recommended schematic. The supply filter capacitor should be 1µF or more. The capacitors 100nF and 2 x 10nF should be placed close to the device. Connections A, B and I are required for programming and linearization. Fig. 4 Codewheel dimensions. Only the external track is...

ID4501C Ordering information Ordering code: ID4501L-ABBCCD-EEEEE-F-GGG-HH A Orientation Table 1 BB Maximum speed Table 2 CC Resolution Table 3 D Look-Up Table Table 4 EEEEE Codewheel Table 5 F Encoder holder Table 6 GGG Cable Table 7 HH Connector Table 8 Table 1: A 0 3 4 5 6 Orientation. Arrows indicate direction of movement of the scale with rising edge A prior to B. Orientation Not progr. 0° 90° 180° 270° Look-Up Table (LUT) Look-Up Table programmed in OTP Not programmed LUT according to codewheel, to be specified Custom LUT, to be specified Default LUT, no codewheel specified Table 5:...