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E4DA
s THREE-STAGE CONTROL OUTPUT
The two variable distance adjusters on the amplifier front
panel are used to establish three control output stages from
the 4 to 20 mA input signal. Each four-turn adjuster allows fine
E4DA
In the example below, the LOW setting is at 40 mm, and the
HIGH setting is at 60 mm. The table below summarizes the
three output ranges:
tuning of the setting. The reference scale above the adjuster
is in 5 mm increments. The linear output current is propor-
tional to the distance to the detected object and is independ-
ent of the distance settings.
LOW range
PASS range
HIGH range
30 to 39.8 mm
40 to 60 mm
60.2 to 70 mm
The 0.2 mm resolution accounts for
the decimal figures. The distance
from the sensor face to 25 mm is a
multiple reflecting range where
Target
output is unstable and should not be
used. From 26 mm to 30 mm the
object is out of detectable range, so
an ALARM output occurs.
26
s OUTPUT OFF-DELAY FUNCTION
The E4DA amplifier’s response time of 2 ms may provide an
output signal too fast for a programmable controller to read.
The timer function provides a 40 ms OFF-delay that holds
only the PASS output for the full duration. The High and Low
outputs are disabled and do not operate during the OFF-
delay. Whether the gate input is used, or not used, the OFF-
delay timer will operate. The output OFF-delay timer is
independent of the input HOLD timing.
No timer function. Disables OFF-delay timer.
40 ms OFF-delay enabled. Holds only the
PASS output for the full duration.
105
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