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SM-Encoder Plus & SM-Encoder Output Plus User Guide

Issue: 4

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How to

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Index

Provided the set-up parameters for the position feedback are correct this parameter
shows the speed in rpm.

x.04

and Pr

x.05

give the position with a resolution of 1/2

ths of a revolution as a 32

bit number as shown below.

Provided the set-up parameters are correct, the position is always converted to units of
1/2

ths of a revolution, but some parts of the value may not be relevant depending on

the resolution of the feedback device. For example if 10 bit resolution is selected the
resolver produces 4,096 counts per revolution, and so the position is represented by the
bits in the shaded area only.

When the feedback device rotates by more than one revolution, the revolutions in Pr

x.04

increment or decrement in the form of a sixteen bit roll-over counter.

x.03

Speed feedback

±40,000.0 rpm

Update rate: 4ms x number of dumb modules

x.04

Revolution counter

Uni

0 to 65,535 revolutions

Update rate: 4ms x number of dumb modules

x.05

Position

Uni

0 to 65,535 (1/2

ths

revolutions)

Update rate: 4ms x number of dumb modules

31 16 15 0
Revolutions

Position

31 16 15 4 3 0
Revolutions

Position

x.07

Marker position reset disable

Bit

OFF (0) or On (1)

OFF (0)

Update rate: Background read

Содержание SM-Encoder Output Plus

Страница 1: ...User Guide Solutions Module for Unidrive SP Digitax ST Part Number 0471 0026 04 Issue 4 www controltechniques com SM Encoder Plus SM Encoder Output Plus...

Страница 2: ...nts of this guide without notice All rights reserved No parts of this guide may be reproduced or transmitted in any form or by any means electrical or mechanical including photocopying recording or by...

Страница 3: ...utions Module identification 7 3 3 Set up parameters 8 3 4 Compatible encoder types 8 3 5 Simulated outputs SM Encoder Output Plus only 9 4 Installing the Solutions Module 10 4 1 General Installation...

Страница 4: ...ary training and experience in system design installation commissioning and maintenance 1 2 Information This guide contains information covering the identification of the Solutions Module terminal lay...

Страница 5: ...ECURE DISABLE SAFE TORQUE OFF functions of the drive do not isolate dangerous voltages from the output of the drive or from any external option unit The supply must be disconnected by an approved elec...

Страница 6: ...which this product is used must comply with the following directives 98 37 EC Safety of machinery 89 336 EEC Electromagnetic Compatibility 2 6 Motor Ensure the motor is installed in accordance with th...

Страница 7: ...er supply output and simulated encoder outputs 3 2 Solutions Module identification Figure 3 1 SM Encoder Plus and SM Encoder Output Plus The SM Encoder Plus and SM Encoder Output Plus can be identifie...

Страница 8: ...ble with a marker pulse which identifies each individual rotation of the disc and is also used to reset the drive position parameter The incremental encoder can be used when operating in Closed Loop V...

Страница 9: ...olated information If a mode with marker lock is selected the incremental position is shifted when the first input marker occurs so that with quadrature mode the marker is aligned with A high and B hi...

Страница 10: ...s into the Solutions Module slot located on the drive until it clicks into place 2 Note that some drives require a protective tab to be removed from the Solutions Module slot For further information r...

Страница 11: ...SM Encoder Plus terminal descriptions Figure 4 3 Encoder cable connections Term Encoder Ab Fd Fr 1 A F F 2 A F F 3 B D R 4 B D R 5 Z 6 Z 7 0V 8 External power supply decoupling 1 2 3 4 5 6 7 8 PL1 Ter...

Страница 12: ...e to be disturbed if careful attention is not given to managing the cable shields Encoder mounting methods There are three methods for mounting an encoder onto a motor 1 Galvanic isolation between enc...

Страница 13: ...reduce radiated radio frequency emissions from either the drive or encoder 4 3 2 Encoder circuit with galvanic isolation from encoder body In this case the encoder device is mounted directly on the m...

Страница 14: ...protects the data against this noise current but much more care is needed in ensuring correct cable management than for the isolated cases Figure 4 7 No isolation Motor Shaft Motor Housing Encoder Hou...

Страница 15: ...length to the terminal to avoid the injection of noise at intermediate pigtails and to maximise the shielding benefit Cable shield ground connection For all mounting methods grounding of the feedback...

Страница 16: ...ble connections Ensure that feedback cables are kept as far away as possible from power cables and avoid parallel routing NOTE Cable Cable shield Twisted pair shield Cable shield Twisted pair shield C...

Страница 17: ...dback cables cannot only result in spurious operation but in extreme cases can result in encoder failure and or damage to the Solutions Modules encoder input Encoder feedback and communications data i...

Страница 18: ...drive then Pr 3 40 should be set to 0 to disable the drive encoder input wire break detection Enc2 trip Slot identification Identify which Solutions Module slot and menu are being used Slot 1 Menu 15...

Страница 19: ...ected A A 120 total Function Detail Simulation source Set the source of the simulated encoder output in Pr x 24 x 05 The encoder input on the Solutions Module 3 29 The encoder input on the drive Simul...

Страница 20: ...or SM Encoder Output Plus modules do not function correctly if the update time is too long The input frequency should not exceed 500kHz but in addition the number of encoder counts seen over one samp...

Страница 21: ...by the user Bit 1 bit parameter Bi Bipolar parameter Uni Unipolar parameter Txt Text the parameter uses text strings instead of numbers FI Filtered some parameters which can have rapidly changing valu...

Страница 22: ...r simulation mode 0 Ab 1 Fd 2 Fr 3 Ab with marker lock 4 to 7 Fd with marker lock 0 RW Uni US x 29 Non marker reset revolution counter 0 to 65 535 revolutions RO Uni NC PT x 30 Non marker reset positi...

Страница 23: ...SM Encoder Output Plus User Guide 23 Issue 4 www controltechniques com How to use this guide Safety information Introduction Installing the Solutions Module Getting started Parameters Diagnostics Term...

Страница 24: ...nter Marker position information x 45 Position feedback initialised x 07 Marker position disable x 16 Encoder termination x 15 Encoder type Marker flag _ PL1 Term Encoder connections 1 A 2 A 3 B 4 B 5...

Страница 25: ...the Solutions Module Getting started Parameters Diagnostics Terminal data Index x 03 x 19 Feedback filter Speed 0 XX 0 XX Key Read write RW parameter Read only RO parameter Input terminals Output ter...

Страница 26: ...ion x 15 Encoder type Marker flag _ SM Applications Freeze flag PL1 Term Encoder connections 1 A 2 A 3 B 4 B 5 Z 6 Z 7 0V 8 V x 10 Equivalent lines per revolution x 08 Marker input SM Universal Encode...

Страница 27: ...al data Index PL2 Solutions Module terminal block Ab Fd Fr Ab L Fd L PL2 term 0V A A B B 0V 0V A A B B 3 4 5 6 1 2 7 8 9 F F D D F F D D F F R R Z Z x 03 x 19 Feedback filter Speed 0 XX 0 XX Key Read...

Страница 28: ...the drive is subsequently powered up with a different Solutions Module fitted or no Solutions Module fitted where one was previously fitted the drive gives a SLx dF or SLx nF trip x 01 Solutions Modu...

Страница 29: ...ng on the resolution of the feedback device For example if 10 bit resolution is selected the resolver produces 4 096 counts per revolution and so the position is represented by the bits in the shaded...

Страница 30: ...The equivalent number of encoder lines per revolution ELPR is defined as follows Although Pr x 10 can be set to any value from 0 to 50 000 there are restrictions on the values actually used as follow...

Страница 31: ...sed to give speed feedback for the speed controller and where the load includes a high inertia and so the speed controller gains are very high Under these conditions without a filter on the feedback i...

Страница 32: ...position is defined by Pr x 25 The table below shows the possible ratios For example if the source encoder has a resolution of 4096 lines per revolution and Pr x 25 set to 0 2500 a ratio of the outpu...

Страница 33: ...ignals requires a defined relationship between the marker pulse and the incremental signals Marker lock should not be used if the drive encoder equivalent lines per revolution ELPR in Pr 3 34 is not a...

Страница 34: ...is zero Pr x 04 and Pr x 05 are updated normally The error status is provided so that the only one option error trip is required for each Solutions Module slot If an error occurs the reason for the er...

Страница 35: ...responding multi module drive module number Pr 6 49 0 or the trip time Pr 6 49 1 for each trip in Pr 10 41 to Pr 10 51 The time of the trip is recorded from the powered up clock if Pr 6 28 0 or from t...

Страница 36: ...correct Check encoder power supply is set correctly Replace feedback device If wire break detection on the main drive encoder input is not required set Pr 3 40 0 to disable the Enc2 trip PS 24V 24V i...

Страница 37: ...odule has been removed 203 208 213 Ensure Solutions Module is fitted correctly Replace Solutions Module Save parameters and reset drive SLX tO Solutions Module slot X trip Solutions Module watchdog ti...

Страница 38: ...outputs from the encoder are higher than 5V 1 Channel A Frequency or Forward inputs 2 Channel A Frequency or Forward inputs 3 Channel B Direction or Reverse inputs 4 Channel B Direction or Reverse in...

Страница 39: ...Simulated Ab Fd and Fr encoder output 1 0V Common 2 0V Common 3 Channel A Frequency or Forward 4 Channel A Frequency or Forward 5 Channel B Direction or Reverse 6 Channel B Direction or Reverse 8 Mark...

Страница 40: ...imulation output 19 Encoder simulation resolution 32 Encoder type 30 31 Encoder with galvanic isolation from motor 12 Environmental limits 6 Error status 34 F Features 7 Feedback cable 15 17 Feedback...

Страница 41: ...39 N No isolation 14 15 Notes 5 P Parameter single line descriptions 22 Parameter coding 21 Parameter descriptions 28 Parameter structure 20 Parameters adjusting 6 Power cables 16 Power supply overlo...

Страница 42: ...0471 0026 04...

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