Rockwell-automation 4100 AEC Absolute Encoder Converter Installation Manual de usuario descargar pdf (Pagina 58)

Publication 4100-UM052B-EN-P - October 2001

50 Strobe Position For Applications Not Using the 1394 or Compact

* Position increment must not exceed the maximum Delta Count rate during Ts1s1.

The count rate is equal to the encoder channel frequency times four (4X encode).

The Strobe (Ts1) must be active for a minimum of 5

s, but less than

5ms to be a valid incremental strobe. When the strobe goes inactive,

the AEC interrogates the transducer position and sends any

incremental change from the previous sample. The time (Ts1pe) to

transmit the incremental position is dependent on the size of the

position increment. The position increment must not exceed the

maximum delta count allowed between consecutive incremental

strobe pulses (Tinc). The period (Tinc) of the strobe must be greater

than 1ms, but less than 10ms. This period is constrained by the

incremental strobe active time (Ts1) and the time to send the position

(Ts1pe).

Incremental Strobe Timing Period

Parameter Min Max

Tinc (Incremental strobe period = Ts1 + Ts1s1) 1ms 60ms

Ts1 (Strobe1 active pulse width) 0.005ms 10ms

Ts1s1 (Time from Strobe inactive to next active strobe) Ts1pe 30000 - Ts1

Ts1pe (Time from Strobe inactive edge to end of position increments) *Maximum Delta Count

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Rockwell-automation 4100 AEC Absolute Encoder Converter Installation Manual de usuario Pagina 58