Banner U-GAGE QT50U Ultrasonic Sensors User Manual

Page 3

OFF = ON/OFF (window)

This switch determines whether the sensor is in fill level control mode or normal ON/OFF mode. The fill level control is

shown. When switch 2 is ON, the switch 3 setting will determine whether the sensor is set up for pump-in or pump-out

operation.

In ON/OFF mode, the sensor is either ON or OFF when the target is within the window limits and opposite when outside of

the window limit.

Pump-In Application

(using Normally Open Output)

Pump-Out Application

(using Normally Closed Output)

Initial Tank Level -

Outputs are INACTIVE

Level Drops Below Far Limit -

Outputs ACTIVATE

Level Rises Above Near Limit -

Outputs DEACTIVATE

Flow

Initial Tank Level -

Outputs are INACTIVE

Level Rises Above Near Limit -

Outputs ACTIVATE

Level Drops Below Far Limit -

Outputs DEACTIVATE

Pump Control

Level Rises Above Near Limit -

Output DEACTIVATES

Level Rises Above Near Limit -

Outputs DEACTIVATE

Initial Tank Level -

Output is INACTIVE

Level Rises Above Near Limit -

Outputs DEACTIVATE

Level Drops Below Far Limit -

Output ACTIVATES

Initial Tank Level -

Outputs are INACTIVE

Level Drops Below Far Limit -

Outputs ACTIVATE

Level Rises Above Near Limit -

Outputs DEACTIVATE

Level Rises Above Near Limit -

Output ACTIVATES

Level Rises Above Near Limit -

Outputs DEACTIVATE

Initial Tank Level -

Output is ACTIVE

Level Rises Above Near Limit -

Outputs DEACTIVATE

Level Drops Below Far Limit -

Output DEACTIVATES

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.

Switch 3: ON/OFF Mode

ON = normally open (output is energized when the target is within window)
OFF = normally closed (output is energized when the target is outside window)

Switch 4: Teach/Transmit Enable Control

ON = Gray (or yellow) wire configured for remote teach
OFF = Gray (or yellow) wire configured for transmit disable. High (5 to 30 V dc or open): Transmit Enabled (Power

LED solid Green) or Low (0 to 2 V dc): Transmit Disabled (Power LED flashes at 2 Hz).

When switch 4 is ON, the gray or yellow wire is used to teach the sensor’s window limits. When switch 4 is OFF, the gray

or yellow wire is used to enable and disable the sensor’s transmit burst. This function may be used when multiple sensors

are operating in close proximity and may be vulnerable to cross-talk interference. A PLC can be used to enable the sensors

one at a time to avoid cross-talk.

When disabled, the sensor outputs will react as if no target is being sensed.

Switches 5-6: Response Speed Adjustment

The speed of the output response is set using DIP-switch positions 5 and 6. There are four values for response speed,

which relate to the number of sensing cycles over which the output value is averaged.

Switch 7: Temperature Compensation

ON = Temperature compensation is enabled
OFF = Temperature compensation is disabled

Changes in air temperature affect the speed of sound, which in turn affects the distance reading measured by the sensor.

An increase in air temperature shifts both sensing window limits closer to the sensor. Conversely, a decrease in air

temperature shifts both limits farther away from the sensor. This shift is approximately 3.5% of the limit distance for a 20

°C change in temperature. With temperature compensation enabled (Switch 7 ON), the sensor will maintain the window

limits to within 1.8% over the −20 °C to +70 °C (−4 °F to +158 °F) range.

U-GAGE QT50UDB Series Sensors with Dual-Discrete Outputs

P/N 110112 Rev. B