HOHNER AUTOMAZIONE SRL Method of transmission of digital information By current: this type of interface offers a simple and cheap method to pilot small charges such as photocopiers, relays, etc., whith short frequenciesand distances in enviroments having little disturb ance. Generally speaking the type of output from the encoder is a transistor (BJT or CMOS) with open collector or Push-Pull wich connects the charge to the negative or positive supply, for NPN (sink) and PNP (source) respectively;

RECEIVER P er hour rotation, sha f t view, su pp l y 8-24V DC +/- 10%
VCC - PHASE A,B:IN QUADRATURE OUT OF PHASE OF 90° ELECTRI- PHASE Z: ACTIVE HIGH (1) OR LOW (2) SYNCRONIZED TO ONE OF THE INCREASE PHASES- S: SHIELD OF CONNECTING CABLE- G: CONNECTION OF SHIELD TO THE FRAME- (C): NPN LOAD ( CURRENT SINK) ENCTRANSMITTER FPHASE APHASE B PHASE Z G
(C) BIPOLAR TYPE TRANSMISSION OCSG
(1)(2) PHASE Z OPEN COLLECTOR <=2uS<=2uS RECEIVER

P er hour rotation, shaft view, supply 8-24V DC+/- 10%

VCC

RC - PHASE A,B:IN QUADRATURE OUT OF PHASE OF 90° ELECT R ENCTRANSMITTER FPHASE Z - PHASE Z: ACTIVE HIGH (1) OR LOW (2) SYNCRONIZED TO ONE OF THE INCREASE PHASES- S: SHIELD OF CONNECTING CABLE- G: CONNECTION OF SHIELD TO THE FRAME- (C): NPN LOAD ( CURRENT SINK) NPN PUSH-PULL TTL LINE DRIVER 5-12V

G

(C)

BIPOLAR TYPE TRANSMISSIONSG

(1)(2)

<=2uS<=2uS RECEIVER

P er hour rotation, shaft view, supply 8-24V DC +/- 10%

VCC

(C1)(C2) ENCTRANSMITTER - PHASES A, B AND COMPLEMENTARY: IN QUADRATURE OUT OF PHASE OF 90° ELECTRICAL- PHASE Z AND COMPLEMENTARY: SINCRONIZED OR ELECTRONICALLY PHASED TO ONE OR BOTH INCREASE PHASES.- S: SHIELD OF CONNECTING CABLE- G: CONNECTION OF SHIELD TO THE FRAME- C1: NPN LOAD (CURRENT SINK) C2: PNP LOAD FFPHASE APHASE APHASE B

G

PHASE BPHASE Z

BIPOLAR TYPE TRANSMISSIONSG

PHASE Z PHASE APHASE BPHASE Z <=2uS<=2uS ( CURRENT SOURCE )

By voltage : compared to the current system, this system allows one to work whit a higher frequency band whose TTL or CMOS levels can be used and processed directly b y the main data acquisition units (e.g. microprocessor, latch, etc.). it is advisable to use this system in low interference enviroments and when supply lines measure about 10 metres;

RECEIVER LINEGUIDE LINE P er hour rotation, sha f t view, su pp l y 5-12V DC+/-5% - PHASES A, B AND COMPLEMENTARY: IN QUADRATURE OUT OF PHASE OF 90° ELECTRICAL- PHASE Z AND COMPLEMENTARY: SINCRONIZED OR ELECTRONICALLY PHASED TO ONE OR BOTH INCREASE PHASES.- S: SHIELD OF CONNECTING CABLE- G: CONNECTION OF SHIELD TO THE FRAME G STANDARD TRANSMISSION WITH TTL LEVELSSG 1 LOGICAL >2.5V0 LOGICAL >0.5V PHASE Z <100nS<100nS RECEIVER LINEGUIDE LINE PHASE APHASE BPHASE Z P er hour rotation, sha f t view, su pp l y 5-12V DC+/-5% - PHASES A, B AND COMPLEMENTARY: IN QUADRATURE OUT OF PHASE OF 90° ELECTRICAL- PHASE Z AND COMPLEMENTARY: SINCRONIZED OR ELECTRONICALLY PHASED TO ONE OR BOTH INCREASE PHASES.- S: SHIELD OF CONNECTING CABLE - G: CONNECTION OF SHIELD TO THE FRAME G STANDARD TRANSMISSION WITH CMOS LEVELSSG 1 LOGICAL MAX (VCC-1,6V)0 LOGICAL MAX 0,8V PHASE Z PHASE APHASE BPHASE Z <100nS<100nS

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