Banner U-GAGE Q45U Series—Analog - Manual (Page 3)

U-GAGE ™ Q45U Ultrasonic Sensors with Bipolar Discrete Outputs
P/N 44177 Rev. D 3
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
The HIGH/LOW mode (switch #2 on) provides the switching logic required for fill-level, web tensioning control, and similar
applications. In the HIGH/LOW mode, the output energizes when the target reaches the first sensing window limit, and stays
energized until the target moves to the second limit. The output then de-energizes at the second limit and does not re-energize until
the target moves, again, to the first limit. Figure 3 shows how pumping action might be controlled, directly, by the sensor in a fill-
level application.
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Sensor
High Level (Near Limit)
Pump-in Application
(switch #1 off)
Pump-out Application
(switch #1 on)
Low Level (Far Limit)
Initial Level
1 Initial Tank Level - Outputs are INACTIVE
2
3
Level Drops Below Far Limit - Outputs ACTIVE
Level Rises Above Near Limit - Outputs DEACTIVATE
2
1
3
Flow Flow
1 Initial Tank Level - Outputs are INACTIVE
2
3
Level Rises Above Near Limit - Outputs ACTIVE
Level Drops Below Far Limit - Outputs DEACTIVATE
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Sensor
Pump Control
High Level (Near Limit)
Low Level (Far Limit)
Initial Level
3
1
2
Figure 3. High/Low Level Control (switch #2 on)
NOTE: If no echo is received by the sensor, the target is assumed to be beyond the far window limit.