Keyence EX-V Series Manual de usuario descargar pdf (Pagina 60)

Chapter 4 Use of Data Processing Functions

Simple bottom-dead-center measurement function (Internal trigger) [b-0]

Measures the "minimum value" detected during a specified period.

* The external trigger mode is not available for the simple bottom-dead-center measurement. For the

internal trigger setting, only a trigger level and trigger hysteresis can be specified.

• If a comparator output disable input turns ON before the comparator operation,

the comparator output does not turn ON.

• The trigger level is factory-adjusted to the full scale.

• Turning the strobe output from ON to OFF results in the off-delay of 2 ms for

updating the comparator output.

Limited bottom-dead-center measurement function [b-1]

Measures the "minimum value" detected during a specified period (sampling

period).

For the limited bottom-dead-center measurement function, the sampling period can

be specified with the combination of the trigger mode and delay time settings.

➮

For the details of the trigger mode and delay time, refer to pages 53 to 55.

Timing diagram

■ External trigger mode

• If a comparator output disable input turns ON before the comparator operation,

the comparator output does not turn ON.

• The sampling period is between the UP edge of the timing input (hold-reset

input) and the UP edge of the next timing input. The value measured at the

instant when the timing input turns ON is displayed/output.

Reference: To clear the measured value being held and to start the measurement

again, short-circuit the hold-reset and GND terminals.

(t)

OFF

When the power is turned ON or the hold-reset signal is input,

the display shows " " until the first timing signal is input.

Displayed value

POWER ON or

Reset input

Strobe output

HIGH OUT

GO OUT

LOW OUT

Comparator

output disable input

Bottom-dead-center values

Trigger level

(t)

OFF

When the power is turned ON or the hold-reset

signal is input, the display shows " " until

the first measured value is determined.

Displayed value

Timing input

Limited bottom-dead-center values

Sampling period Sampling period

Sampling period

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 119 120

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Lao 20 Nov 2024 | 23:59:11

Keyence EX-V Series Manual de usuario Pagina 60

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