Omron ZX Series User Manual

Reflective Sensor Heads: FUN Mode Functions Section 3-5
59
n Self-bottom Hold
In Self-bottom Hold Mode, measurements are performed while the mea-
sured value is smaller than or equal to the self-trigger level, and the mini-
mum value in the period will be the output value.
Hold Mode starts when the power is turned ON, immediately after chang-
ing to RUN or T Mode, or immediately after the reset input is turned OFF.
The output is held at the maximum output (current: approximately 23 mA,
voltage: approximately 5.5 V) until the first sampling period is finished. The
first measured result (A in the figure below) is output from the end of the
first sampling period to the end of the second sampling period. After the
second sampling period, the second measured result (B in the figure
below) is output and the sequence is repeated.
Example: Self-bottom Hold
Sampling is not affected by the timing input in Self-bottom Hold
Mode.
POINT
Display value = Output value
Measured value
Current (mA)
23
Outputs A.
Outputs B.
A
B
Sampling Sampling
Time
Hold Mode
Start
4
Self-trigger
level
The output is clamped on
the minimum value until
the first sampling periond
is finished.

Omron ZX Series Specifications

General

Power Supply Voltage	12 to 24 VDC ±10%
Protection Rating	IP67
Output Type	NPN or PNP
Protection Circuit	Reverse polarity protection, short-circuit protection
Operating Temperature	-25 to 55°C (-13 to 131°F)