Q45U Long-Range Ultrasonic Sensors with Bipolar Discrete Outputs
1
ON
2
3
4
Switch #2
OFF = ON/OFF
ON = HI/LOW
See Table Below for
Programming Information
Near and Far Sensing Limit Settings:
The Q45U features a single push button for programming of
sensing window near and far limits (Figure 1). See the
programming procedure on page 4.
Status Indicators:
Status indicator LEDs are visible through the transparent, o-ring
sealed Lexan
®
top cover. Indicator function in the RUN mode is,
as follows:
• The green LED is on steadily whenever power is applied to
the sensor, and flashes to indicate an overloaded output.
• The red LED lights when an echo is received, and flashes at
a rate that is proportional to echo strength.
• The yellow LED lights whenever the outputs are conducting.
The 5-segment moving dot LED indicator displays the relative
position of the target within the programmed sensing window.
The #1 LED flashes when the target is closer than the near limit.
The #5 LED flashes when the target is beyond the far limit.
Output Response Settings:
IMPORTANT: Remove power before making any internal
adjustments.
Using the two slots shown in Figure 1, a small flat-blade
screwdriver may be used to lift up and remove the black inner
cover to expose the 4-position DIP switch (Figure 2). Those
switches are used to program the following functions:
Limits
N
1 2 3 4 5
Green POWER
Indicator
Red SIGNAL
Indicator
Yellow OUTPUT
Indicator
Push button for
Programming of Sensing
Window Limits
5-Segment Target
Position Indicator
(N = Near)
Slots for Inner
Cover Removal
Figure 1.
Q45U Features
Figure 2.
Q45U Programming Switches
Switch
Function
1
ON/OFF
Mode
Output: On = normally closed (output energizes when target is absent)
Off* = normally open (output energizes when target sensed)
2
Mode:
On =
HIGH/LOW
(fill level control, see description, on page 3)
Off* =
ON/OFF
(output follows sensing action)
3 - 4
Response
(40 ms/cycle)
Switch 4
Switch 3
1 Cycle
2 Cycles
8 Cycles*
32 Cycles
Off
On
Off
On
*Denotes factory settings.
NOTE: Response setting of 2 cycles, or higher, is recommended for optimum sonic and electrical noise immunity. Always use the
slowest acceptable response speed for your application. Single cycle update is only recommended for short range
(>1.0 m) applications looking for a stationary background target.
HIGH/LOW
Mode
On = Pump Out
Off = Pump In
Off
Off
On
On
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