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Lika SMAX-AI1 series, User Manual, Page: 1 / 32

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User's guide

SMAX

•

Cost-effective absolute linear encoder

•

Measuring length up to 600 mm / 23.622”

•

Resolution down to 0.1 mm

•

SSI and voltage/current analogue interfaces

•

Up to IP69K protection rate

Suitable for the following models:

•

SMAX-BG-...

•

SMAX-GG-...

•

SMAX-AI1-...

•

SMAX-AV2-...

Table of Contents

1 - Safety summary

7

2 - Identification

8

3 - Mounting instructions

9

4 - SSI interface

13

5 - Analogue interface

20

6 - Diagnostic LED

28

7 - Maintenance

29

8 - Troubleshooting

30

Lika Electronic    

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    Tel. +39 0445 806600    

•

    [email protected]    

•

    www.lika.biz

Smart encoders & actuators

Summary of Contents for SMAX-AI1 series

Page 1: ...p to IP69K protection rate Suitable for the following models SMAX BG SMAX GG SMAX AI1 SMAX AV2 Table of Contents 1 Safety summary 7 2 Identification 8 3 Mounting instructions 9 4 SSI interface 13 5 An...

Page 2: ...on herein is subject to change without notice and should not be construed as a commitment by Lika Electronic s r l Lika Electronic s r l reserves the right to make all modifications at any moments and...

Page 3: ...1 6 Counting direction input 15 4 2 SSI Synchronous Serial Interface 15 4 2 1 MSB left aligned protocol 17 4 2 2 Recommended transmission rates 18 4 3 Recommended SSI circuit 19 5 Analogue interface...

Page 4: ...5 5 Recommended voltage analogue output circuit 27 6 Diagnostic LED 28 7 Maintenance 29 8 Troubleshooting 30...

Page 5: ...t to highlight the parts of the text where information of great significance for the user can be found user must pay the greatest attention to them Instructions must be followed strictly in order to g...

Page 6: ...SMAX BG SMAX GG or the voltage SMAX AV2 current SMAX AI1 analogue interface or the Modbus interface SMAX MB The Modbus sensor is provided with its own technical documentation It is mandatory to pair...

Page 7: ...to zero set the encoder connect Zero setting input to Vdc for 100 s at least then disconnect Vdc normally voltage must be at 0Vdc zero set must be performed after Counting direction setting we suggest...

Page 8: ...e especially swarf as turnings chips or filings should this not be possible please make sure that adequate cleaning measures as for instance brushes scrapers jets of compressed air etc are in place in...

Page 9: ...or filings should this not be possible please make sure that adequate cleaning measures as for instance brushes scrapers jets of compressed air etc are in place in order to prevent the sensor and the...

Page 10: ...5 mm Install the sensor and the magnetic scale as shown in the Figure The system does not operate if mounted otherwise than illustrated in the Figure The arrow is intended to indicate the standard cou...

Page 11: ...having installed the sensor on the magnetic scale a zero setting operation is compulsorily required The zero setting operation is further required every time either the sensor or the scale is replaced...

Page 12: ...ce then the maximum measuring length ML is the maximum length of the tape minus the length of the sensor head L 80 mm 3 149 200 mm 7 874 600 mm 23 622 3 5 Standard counting direction The positive coun...

Page 13: ...Yellow 3 Clock IN Blue 4 Data OUT Green 5 Data OUT Orange 6 Zero setting White 7 Counting direction Grey 8 Shield Shield Case 4 1 1 M8 cable specifications Model LIKA HI FLEX sensor cable type M8 Wir...

Page 14: ...ormally voltage must be at 0Vdc zero set must be performed after Counting direction setting we suggest performing the zero set when the encoder is in stop Connect to 0Vdc if not used WARNING It is nec...

Page 15: ...llows the count up when the sensor moves in reverse of the standard direction i e in the opposite direction to the one shown by the arrow in Figure 1 Connect the Counting direction input to 0Vdc if no...

Page 16: ...ed out as follows At the first falling edge of the clock signal 1 the logic level changes from high to low the absolute position value is stored while at the following rising edge 2 the transmission o...

Page 17: ...e word has a variable length according to resolution as shown in the following table Model Resolution Length of the word Max number of information max value SMAX BG 1250 SMAX GG 1250 1 25 mm 9 bits 9...

Page 18: ...100 156 900 m 156 9 mm 4 2 2 Recommended transmission rates The SSI interface has a frequency of data transmission ranging between 100 kHz and 1 5 MHz The CLOCK signals and the DATA signals comply wit...

Page 19: ...SMAX SSI and analogue 4 3 Recommended SSI circuit MAN SMAX SSI_AI1_AV2 E 1 5 odt 4 SSI interface 19 of 32...

Page 20: ...c Power Supply Black 1 13Vdc 30Vdc Red 2 0Vdc analogue Yellow 3 START Blue 4 Iout Vout Green 5 STOP Orange 6 n c White 7 FAULT n c Grey 8 Shield Shield Case n c not connected 5 1 1 M8 cable specificat...

Page 21: ...by the user 5 2 Signals description 5 2 1 0Vdc 0Vdc Power Supply and 0Vdc analogue are internally connected 5 2 2 START input It is used to execute the TEACH IN procedure It is active at HIGH logic le...

Page 22: ...al an error condition such as a circuit break To connect the Fault signal please refer to the examples in the sections hereafter 5 2 6 1 Fault output connected to a PLC input and 5 2 6 2 Fault output...

Page 23: ...5 2 6 2 Fault output connected to a relay Figure 4 No encoder error coil energized Encoder error coil de energized EXAMPLE Vdc 24 V R1 47 R1 I Vdc R2 I 30 mA current needed to energize a small relay...

Page 24: ...ent voltage signal level is kept at the minimum maximum value of the selected range 4 20 mA for SMAX AI1 0 10 V for SMAX AV2 The set output range the overall information to be output is defined over t...

Page 25: ...e origin of the travel i e the point where you activate the START input a voltage level increasing from 0 V origin of the travel position 0 to 10 V end of the travel for the 1024 positions of the axis...

Page 26: ...ge signal level available in the output range 20 mA for SMAX AI1 10 V for SMAX AV2 WARNING If you set a wrong point for the initial position of the travel by activating the START input you have to tur...

Page 27: ...when the axis is in the first position of its travel you define a descending ramp as the one shown in the Figure on the right The maximum value of the output range precedes the initial point of the ra...

Page 28: ...lash 200 ms ON 1 s OFF The sensor is installed too far from the magnetic scale the installation does not comply with the tolerance values between the sensor and the scale see Figure 2 Double flash 200...

Page 29: ...ectronic equipment From time to time we recommend the following operations periodically check the soundness of the structure and make sure that there are no loose screws tighten them if necessary chec...

Page 30: ...Check whether the sensor sensitive part is damaged The sensor has been damaged by short circuit or wrong connection Fault The measured values are either inaccurate or not provided in the whole length...

Page 31: ...This page intentionally left blank...

Page 32: ...2 17 07 2014 4 SSI interface section updated 1 3 12 01 2015 3 Mounting instructions section updated 1 4 19 11 2015 General review mounting tolerances correction 1 5 20 03 2017 General review 3 Mountin...

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