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E-ABS

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1. Introduction

The E-ABS is a module of the APC100y and APC200d application cards which allows to interface
up to two absolute encoders with the SSI or ENDAT serial protocol.

When 2 encoders are connected, they must have some protocol and bit number.

Note!

Simultaneous reading of two encoders ca happen only if the encoders are the same

type (SSI or ENDAT) and they must have the same number of bit.

The previous card, with just one encoder interface (working with SSI serial protocol only), was
named E-ABS hardware rev B; thanks to the E hw revision, it has become a general card with
two encoder interfaces (Sw revision C, “SSI” only; sw revision D “SSI & ENDAT”).

In this manual the APC cards are referred to as application cards. The differences between the
B and the E hardware revision are stated within brackets.

The card revision index can be detected on the component side near the card screen printing
(E-ABS code) where a label states the revision index (B,E, etc.).  Index firmware revision can be
verified reading “D2” components on the card (C,D,ecc).

The E-ABS card consists of:

- 2 interfaces for a serial absolute encoder (1 interface for the B revision)

The encoder is not power supplied via the interface.

The foreseen encoder type is SSI or ENDAT protocol with 25 precision bits. The card has been
tested with the following encoders: Heidenhain EQN 425 SSI, ROQ 425 SSI, EQN 1325 SSI
and EQN 425 ENDAT.

It is also possible to connect a  SSI protocol encoder whose bit number can be parameterized
from 1 to 25 bits. In this case the reading procedure is called multibit and owns separate
commands.

The E-ABS card has a 3.000 or a higher firmware version.

At the power up, starts the initialization and automatic verification of the type of absolute encoder
(around 2 seconds), if the encoder is not wired, default setting will be “SSI”.

Front side / Back side

 

  

2. Mounting

Figure 2.1 shows the position of the E-ABS card on the Drive.

As for the connections, see the diagrams of chapter 8,USE EXAMPLES.

Summary of Contents for SIEIDrive E-ABS

Page 1: ... Instruction Manual SIEIDrive Absolute encoder interface E ABS Interface card ...

Page 2: ...ervono unicamente alla descrizione del prodotto e non devono essere intesi come proprietà assicurate nel senso legale Tutti i diritti riservati Thank you for choosing this GEFRAN product We will be glad to receive any possible information which could help us improving this manual The e mail address is the following techdoc gefran com Keep the manual in a safe place and available to engineering and...

Page 3: ...accia encoder 9 Accessori opzionali per interfaccia secondo encoder 9 8 Esempi di Utilizzo 10 Table of Contents 1 Introduction 12 2 Mounting 13 3 Connection 13 3 1 Connection to the Application Card 13 3 2 First Encoder Connection 14 3 3 Second Encoder Connection 14 3 4 Second Encoder Connection 15 4 Power Supply 15 4 1 Encoder Power Supply through the Drive 15 4 2 Encoder External Power Supply 15...

Page 4: ... alla serigrafia della scheda sigla E ABS si trova un etichetta che riporta l indice di revisione hardware B E ecc Sul componente D2 montato su zoccolo è indicata la revisione firmware C D ecc La scheda E ABS è composta da 2 interfacce per encoder assoluto 1 interfaccia per rev hardware B L alimentazione per l encoder non viene fornita attraverso l interfaccia Il tipo di encoder previsto è con pro...

Page 5: ...connettore a vaschetta 9 poli femmina 3 1 Connessione con Scheda Applicativa La connessione della E ABS con la scheda applicativa avviene usando i segnali che origina riamente interfacciavano la scheda D NET attraverso i connettori X1 e X2 Il connettore X1 serve per interfacciare il primo encoder e viene descritto nel prossimo paragrafo Il connettore X2 serve per interfacciare la DPRAM presente su...

Page 6: ...resenti sulla scheda E ABS e sull encoder Per realizzarla occorre collegare una resistenza da 100 200Ω tra i morsetti 3 e 7 collegare lo 0V di alimentazione dell encoder al morsetto 3 La calza del cavo schermato va connessa a punti diversi secondo le modalità di collegamen to adottate per l encoder e secondo gli effetti di eventuali disturbi che vengono indotti sui cablaggi Se la calza del cavo la...

Page 7: ...o Encoder Il connettore 9 poli per il secondo encoder viene collegato alla scheda E ABS attraverso un flat cable inserito nel kit opzionale Dato il tipo di collegamento viene richiesto un fissaggio meccanico del connettore dell encoder ad esempio con una fascetta fissata sulle feritoie del drive per non strappare il flat cable dal connettore della E ABS 4 Alimentazioni La scheda richiede l aliment...

Page 8: ... il cavo 5 Jumpers La tabella seguente descrive i ponticelli presenti sulla scheda Nome Descrizione Default S1 Riservato per applicazioni future OFF Riservato ON Riservato OFF teabs03i 6 Led PWR ___________________________ Presenzatensionealimentazioneprovenientedallaschedadiregolazione e uscita dallo stato dei reset Per la misura di tale tensione occorre usare unostrumento 7 Caratteristiche Tecni...

Page 9: ...____________ parametrizzabile 1 25 bit Tipo interfaccia encoder ____________ seriale sincrona protocollo SSI o ENDAT riconoscimento automati co tipo di encoder Livello elettrico interfaccia ___________ differenziale RS485 Cavo consigliato __________________ cavo schermato a bassa capacità 50pF m adatto a linee 485 422 Segnali interfaccia _________________ clock sincrono e dato Periodo clock sincro...

Page 10: ...V DATA B A CLK A CLK XE APPLICATION CARD Fig 8 1 Collegamento encoder assoluto 1 con alimentazione da drive 1 5 3 8 5 9 2 6 4 1 6 7 7 E ABS APPLICATION CARD DRIVE ENCODER DATA B 0V DATA B 5V A CLK A CLK 120 XE POWER SUPPLY Fig 8 2 Collegamento encoder assoluto 1 con alimentazione esterna ...

Page 11: ...ncoder interface 1 5 3 8 5 9 2 6 4 1 6 7 7 E ABS DRIVE ENCODER 1 DATA B 5v 0V DATA B A CLK A CLK XE 8 2 1 3 7 APPLICATION CARD ENCODER 2 DATA DATA CLK CLK POWER SUPPLY 5V 0V Fig 8 3 Collegamento tipico encoder 1 e 2 ...

Page 12: ...screen printing E ABS code where a label states the revision index B E etc Index firmware revision can be verified reading D2 components on the card C D ecc The E ABS card consists of 2 interfaces for a serial absolute encoder 1 interface for the B revision The encoder is not power supplied via the interface The foreseen encoder type is SSI or ENDAT protocol with 25 precision bits The card has bee...

Page 13: ...ale pole D sub connector 3 1 Connection to the Application Card The E ABS connection to the application card is performed by using those signals originally used to interface the D NET card via the X1 and X2 connectors The X1 connector which is described in the following paragraph is used to interface the first encoder The X2 connector is used on the contrary to interface the card DPRAM to the micr...

Page 14: ...ue allowed by the drivers type 485 on the E ABS card and on the encoder The equipotentiality can be obtained by connecting a 100 200Ω resistance between the terminals 3 and 7 and the 0V of the encoder power supply to the terminal 3 The braided wire of the shielded cable has to be connected to different points according to the encoder connection modes and according to possible noises induced on the...

Page 15: ...erminal 6 Refer to the example diagrams in chapter 8 Use Examples 3 4 Second Encoder Connection The 9 pole connector for the second encoder is connected to the E ABS card via a flat cable placed in the optional kit Considering the connection mode a mechanical fixing of the encoder connector is required for example with a clip on the drive openings in order not to pull out the flat cable from the E...

Page 16: ...ion the voltage drop along the cable 5 Jumpers The following table describes the jumpers available on the card Name Description Default S1 Reserved for future applications OFF Reserved ON Reserved OFF teabs03g 6 Led PWR ___________________________ Power supply voltage deriving from the regulation card the procedu re leaves the reset status This voltage can be measured by using a specific device 7 ...

Page 17: ...r resolution with a multibit mode only from E revision ______________ possibility to parameterize 1 25 bits Encoder interface _________________ serial synchronous SSI protocol or ENDAT automatic detection of encoder type Interface electric level ______________ differential RS485 Suggested cable __________________ low capacitantance shielded cable 50pF m suitable for 485 422 lines Interface signals...

Page 18: ...A CLK A CLK XE APPLICATION CARD Fig 8 1 Connection of the absolute encoder 1 with a drive power supply 1 5 3 8 5 9 2 6 4 1 6 7 7 E ABS APPLICATION CARD DRIVE ENCODER DATA B 0V DATA B 5V A CLK A CLK 120 XE POWER SUPPLY Fig 8 2 Connection of the absolute encoder 1 with an external power supply ...

Page 19: ...r interface 1 5 3 8 5 9 2 6 4 1 6 7 7 E ABS DRIVE ENCODER 1 DATA B 5v 0V DATA B A CLK A CLK XE 8 2 1 3 7 APPLICATION CARD ENCODER 2 DATA DATA CLK CLK POWER SUPPLY 5V 0V Fig 8 3 Typical connection for the encoder 1 and 2 ...

Page 20: ...iamerica c SIEI AREG GERMANY Zachersweg 17 D 74376 Gemmrigheim Ph 49 7143 9730 Fax 49 7143 97397 info sieiareg de GEFRAN SIEI UK Ltd 7 Pearson Road Central Park TELFORD TF2 9TX Ph 44 0 845 2604555 Fax 44 0 845 2604556 sales gefran co uk GEFRAN SIEI ASIA Blk 30 Loyang way 03 19 Loyang Industrial Estate 508769 SINGAPORE Ph 65 6 8418300 Fax 65 6 7428300 info gefransiei com sg GEFRAN SIEI Electric Blo...

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