IBV 100/EXE 100 Interpolation and Digitizing Electronics

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Robert Anderson
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1 Linear Encoders Angle Encoders IBV 1/EXE 1 Interpolation and Digitizing Electronics Rotary Encoders 3-D Touch Probes Position Display Units Numerical Controls HEIDENHAIN linear, rotary and angle encoders operate on the principle of photoelectrically scanning very fine gratings. These encoders normally produce sinusoidal scanning signals with levels of approximately 11 µa PP (current signal) or approx. 1 V PP (voltage signals). The subsequent electronics first interpolate the scanning signals and then convert them into square-wave pulses (digitizing). This interpolation and digitizing circuitry is either integrated in the NC control (e.g. a HEIDENHAIN TNC), in the numerical display (e.g. ND or POSITIP from HEIDENHAIN) or is available as a separate unit of the IBV type (for voltage signals A, B and R) or EXE type (for current signals I 1, I 2 and I ). The new IBV 1/EXE 1 interpolation and digitizing electronics from HEIDENHAIN are smaller in dimension than the IBV/EXE 6 series, making them particularly well designed for easy and immediate mounting on machine elements. The EXE and IBV provide two square-wave pulse trains U a1 and U a2 as well as a reference pulse U a. Within one signal period, each of the four signal edges of U a1 and U a2 can serve as a counting pulse. The distance between two subsequent edges of U a1 and U a2 is one measuring step. After 5-fold interpolation, for example, this distance is 1/2th of a grating period. The adjustment to the subsequent electronics is quite easy. The interpolation, edge separation and reference pulse width are adjusted using PCB switches. Failure indication consists of a separate fault detection signal, or in addition, a switch to high impedance in the outputs U a1 and U a2. Optimum functionality and compact size are the essential attributes of the IBV 1/ EXE 1 series. Encoder signals I 1, A 36 elec. signal period Output signals after 5-fold interpolation U a1 I 2, B I, R 9 elec. Phase shift Reference mark signal U a2 U a Measuring step 1

Specifications IBV 1 series IBV Interpolation and Digitizing Electronics Input:» 1 V PP Output: «TTL The IBV 1 series features one input for incremental linear or angle encoders with sinusoidal

2 Specifications IBV 1 series IBV Interpolation and Digitizing Electronics Input:» 1 V PP Output: «TTL The IBV 1 series features one input for incremental linear or angle encoders with sinusoidal output signals and a signal level of 1 V PP. IBVs provide output signals over a TTL compatible flange socket. The 5 V ± 5 % power supply of the IBV 1 series must be provided by the subsequent electronics. Interpolation and minimum edge separation a of the output signals or the resulting maximum input frequency are adjustable in the IBV. The hysteresis of the incremental output signals of the IBV 11 is fixed at no hysteresis ; the IBV 12 is fixed at with hysteresis. IBV 11 Possible settings Minimum edge separation Interpolation 5-fold 1-fold a Input frequency 2 khz 2 khz.125 µs width Fault indication 2 khz 1 khz.25 µs 133 khz 66 khz.375 µs 1 khz 5 khz.5 µs 8 khz 4 khz.625 µs 5 khz 25 khz 1. µs 25 khz 12.5 khz 2. µs 9 elec. or 27 elec. Via fault detection signal U as, or additionally U a1 /U a2 highimpedance Default version printed bold! IBV 12 Possible settings Minimum edge separation Interpolation 2-fold 25-fold 5-fold 1-fold a Input frequency 1 khz 8 khz 4 khz 2 khz.125 µs 5 khz 4 khz 2 khz 1 khz.25 µs 33 khz 26 khz 13 khz 6.6 khz.375 µs 25 khz 2 khz 1 khz 5 khz,5 µs 2 khz 16 khz 8 khz 4 khz.625 µs 12.5 khz 1 khz 5 khz 2.5 khz 1. µs 6.25 khz 5 khz 2.5 khz 1.25 khz 2. µs width Fault indication 9 elec. or 27 elec. Via fault detection signal U as, or additionally U a1 /U a2 highimpedance Default version printed bold! 2

3 Specifications EXE 1 series EXE Interpolation and Digitizing Electronics Input:» 11 µa PP Output: «TTL The EXE 1 series features one input for linear or angle encoders with sinusoidal output signals and a signal level of 11 µa PP. These EXEs provide output signals over a TTL compatible flange socket. The 5 V ± 5 % power supply of the EXE 1 series must be provided by the subsequent electronics. Interpolation and minimum edge separation a of the output signals or the resulting maximum input frequency are adjustable in the EXE. The hysteresis of the incremental output signals of the EXE 11 is fixed at no hysteresis ; the EXE 12 is fixed at with hysteresis. EXE 11 Possible settings Minimum edge separation Interpolation* 5-fold 1-fold a Input frequency 1 khz 1 khz.125 µs width Fault indication 1 khz 1 khz.25 µs 1 khz 66 khz.375 µs 1 khz 5 khz.5 µs 8 khz 4 khz.625 µs 5 khz 25 khz 1. µs 25 khz 12.5 khz 2. µs 9 elec. or 27 elec. Via fault detection signal U as, or additionally U a1 /U a2 highimpedance * Default versions printed bold! Please indicate when ordering. EXE 12 Possible settings Minimum edge separation Interpolation* 2-fold 25-fold 5-fold 1-fold a Input frequency 6 khz 6 khz 4 khz 2 khz.125 µs 5 khz 4 khz 2 khz 1 khz.25 µs 33 khz 26 khz 13 khz 6.6 khz.375 µs 25 khz 2 khz 1 khz 5 khz.5 µs 2 khz 16 khz 8 khz 4 khz.625 µs 12.5 khz 1 khz 5 khz 2.5 khz 1. µs 6.25 khz 5 khz 2.5 khz 1.25 khz 2. µs width Fault indication 9 elec. or 27 elec. Via fault detection signal U as, or additionally U a1 /U a2 highimpedance * Default versions printed bold! Please indicate when ordering. 3

4 Specifications Dimensions General specifications Weight Approx..3 kg Protection IEC 6529 IP 65 Operating temperature Storage temperature Vibration 5 to 2 Hz Shock 11 ms to 7 C 3 to 8 C 1 m/s 2 3 m/s 2 Power Supply U P = 5 V ± 5 % Current consumption Without current consumption by the encoder and without output load Max. 1 ma Subsequent electronics with the recommended input circuitry increase current consumption by approx. 8 ma. Dimensions in mm ±1 86± ± *) ±1 *) Two mounting screws x 16 ISO 4762/DIN 912 4

5 Electrical Connection Connecting Elements General Information The pins on connectors are numbered in the direction opposite to those on couplings or flange socket, regardless of whether the contacts are male or female contacts. Connector: Connecting element with coupling ring. Available with male or female contacts. M23 When engaged, the connections provide protection to IP 67 (D-sub connector: IP 5; IEC 6529). When not engaged, there is no protection. Connecting elements and cables M23 Input of IBV Output of IBV / EXE Cable and connector 12-pin See HEIDENHAIN catalogs Rotary Encoders Angle Encoders, Exposed Linear Encoders Sealed Linear Encoders Cable lengths: Max. 3 m* Max. 6 m with U P > 4.9 V Input of EXE Cable and connector 9-pin See the HEIDENHAIN catalog Digital Readouts and the Product Information documents of the respective encoders Cable lengths: Max. 3 m* * At I encoder 12 ma EXE:» 11 µapp 9-pin IBV:» 1 VPP 12-pin IBV/EXE: «TTL 12-pin Cable 12-pin Complete with connector (female) and coupling (pin) Id. Nr xx With one connector (female) Id. Nr xx Cable only PUR [4(2 x.14 mm 2 ) + (4 x.5 mm 2 )] Id. Nr Connector (female) 12-pin Id. Nr

6 Electrical Connection Input of IBV 12-pin flange socket M Power Supply Incremental Signals Other signals / U P Sensor V Sensor U P V A+ A B+ B R+ R Vacant Vacant Vacant Brown/ Green Blue White/ Green White Brown Green Gray Pink Red Black Violet / Yellow U P = power supply; shield on housing Sensor: The sensor line is connected internally with the corresponding power line. Input of EXE 9-pin flange socket M23 Power Supply Incremental Signals 3 4 Housing U P V External shield Inside shield I 1 + I 1 I 2 + I 2 I + I Brown White White/ Brown U P = power supply Vacant pins or wires must not be used! Green Yellow Blue Red Gray Pink Shield on housing Color assignment applies only to extension cable. Output of IBV and EXE 12-pin flange socket M23 Power Supply Incremental Signals Other signals / U P Sensor V Sensor U P V U a1 U a2 U a PWT test pin Vacant Brown/ Green Blue White/ Green White Brown Green Gray Pink Red Black Violet Yellow / U P = power supply; shield on housing Sensor: The sensor line is connected internally with the corresponding power line. 6

7 Mounting The IBV/EXE1 are fastened by two screws. Remark: The housing must share the same electrical potential as the encoder and subsequent electronics. This is ensured by connecting the grounding screw with a potential compensating line (Cu; cross section > 6 mm 2 ) to the main signal ground of the machine. 2x x 16 ISO 4762 Md = 2.5 Nm Accessories 1 An adapter plate is available for mounting on existing holes for the IBV 6xx/EXE 6xx: Adapter plate: Id. Nr ±.2 86±.2 25 ƒ ƒ ± ± ±.2 ƒ.3 R5 Md = 2.5 Nm Included in delivery 4.5 Adapter plate 7

8 HEIDENHAIN Measuring and Test Equipment The PWT is a simple adjusting aid for HEIDENHAIN incremental encoders. In a small LCD window the signals are shown as bar charts with reference to their tolerance limits. PWT 1 PWT 17 PWT 18 Encoder input» 11 µa PP «TTL» 1 V PP Features Measurement of signal amplitude Wave-form tolerance Amplitude and position of the reference mark signal Power Supply Dimensions Via power supply unit (included) 114 mm x 64 mm x 29 mm If the PWT test pin is connected with + 5 V, the TTL signals are switched off and the analog signals of the connected encoder are available at the output as 11 µa PP signals. Signal amplitude Signal quality I 1, µa The IBV 1 or EXE 1 series require the PWT 17. The connecting cable (Id. Nr xx) must be ordered separately. Encoder I Tolerance of the reference mark s zero crossover RI Measurement of reference mark PWT 17 Id Nr xx For more information Brochure: EXE DR. JOHANNES HEIDENHAIN GmbH Dr.-Johannes-Heidenhain-Straße Traunreut, Germany { +49 (8669) (8669) info@heidenhain.de /25 Bi Printed in Germany Subject to change without notice

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