Drehgeber für Funktionale Sicherheit - Fritz Kübler GmbH Zähl- und ...

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Encoder Recommended input circuit R a = 10 � C 1 = 150 pF C 2 = 10 pF R 1 = 10 k� R 2 = 33 k� U 0 = 2,5 V � 0,5 V Signals measured against 0V Signals measured differentially 6 U/ 0,5 0 Z = 120 � U 1 = U0 rotation: cw OPV: e.g. MC33074 B A A B Cos Sin
SSI - Data Transmission The absolute position is transmitted via the SSI interface to the controller as a digital data word. The serial, differential transmission consists of two clock lines and two data lines. The controller sends clock pulses via the clock line and the encoder supplies the position data via the data line. A terminating resistor of 120 Ohm must be connected to the data line at the controller input. In the rest state, the clock and data lines are at a high level. With the first falling clock-pulse edge, the current encoder data are stored in the buffer ready to be sent. With the next rising clock-pulse edges the data are transmitted bit by bit, starting with the MSB (Most Significant Bit). The transfer of a complete data word requires n+1 rising clock-pulse edges (n = resolution in Bit), e.g. 14 clock signals for a complete readout of a 13 Bit encoder. After the last positive clock-pulse edge the data line will remain at a low level for the period of the monoflop time t3 until the encoder is again ready for a new data word. The clock line must stay High for at least the same amount of time, and can then again begin a new read-out sequence of the encoder with the next falling edge. 6. EMC Information • Use only shielded twisted-paired conductors as encoder cables. • Connect the shield at both ends to the ground on a large contact area. Make sure that the cable shields are well fastened. • When wiring your installation, take care to route the cables properly. Separate the wiring in cable groups such as motor / power supply cables and signal / data cables. Route the signal and data cables as close as possible to grounded surfaces (supporting beams, metal rails, cabinet sides) and not parallel to motor and power supply cables. • Connect all equipment with low impedance to the ground/ protective conductor system. Encoder Control input RS485 Transceiver +5V +5V Data + +5V 10k 120 Z 10k Clock+ Data - Clock - t1 = T / 2 t2 < 1 / (4 x fmax) t3 = Monoflop time (see below) n = Resolution in Bit 1/ fmax =< T =< 1 / fmin fmin = min. SSI clock rate (see data sheet) fmax = max. SSI clock rate (see data sheet) BISS Interface: Details about the BISS Interface can be found on our website at: www.kuebler.com/service/Biss.pdf Z Z = 120 Ohm RS485 Transceiver e.g. MAX 490 z.B. MAX 490 7 english
Seite 1 und 2: Drehgeber für Funktionale Sicherhe
Seite 3 und 4: Inhaltsangabe 1. Funktion des Drehg
Seite 5 und 6: 3. Sicherheitskonzept ! Sichere Ink
Seite 7 und 8: Drehgeber Empfohlene Eingangsschalt
Seite 9 und 10: ! 7. Montage des Drehgebers Allgeme
Seite 11 und 12: Drehgeber mit Vollwelle und Fläche
Seite 13 und 14: Drehgeber mit Hohlwelle, Klemmring
Seite 15 und 16: © Fritz Kübler GmbH Copyright Pro
Seite 17 und 18: 2. Safety Funcions 1. Function of t
Seite 19: 4. Safety Characteristics Service l
Seite 23 und 24: Mounting advice for encoders with s
Seite 25 und 26: Encoder with tapered shaft and SIL
Seite 27 und 28: 9. Checklist for start-up ✓ ✘ M

Drehgeber für Funktionale Sicherheit - Fritz Kübler GmbH Zähl- und ...

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