Sensor programming, Teaching minimum and maximum limits, Normally closed output normally open output – Banner U-GAGE QT50U Ultrasonic Sensors User Manual

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Sensor Programming

Three TEACH methods may be used to program the sensor:

•

Teach individual minimum and maximum limits,

•

Use the Auto-Window feature to center a sensing window around the taught position, or

•

Simultaneously use Auto-Window and position a threshold for background suppression at the taught position.

The sensor may be programmed either via its two push buttons, or via a remote switch. Remote programming also may be

used to disable the push buttons, preventing unauthorized personnel from adjusting the programming settings. To access

this feature, connect the gray wire of the sensor to 0–2 V dc, with a remote programming switch between the sensor and

the voltage.

NOTE: The impedance of the Remote Teach input is 12 kΩ.

Programming is accomplished by following the sequence of input pulses. The duration of each pulse (corresponding to a

push button “click”), and the period between multiple pulses, are defined as 0.04 seconds < T < 0.8 seconds

Teaching Minimum and Maximum Limits

Output OFF

Output ON

Output OFF

Minimum

Limit

Maximum

Limit

Output ON

Output OFF

Minimum

Limit

Maximum

Limit

Normally Closed Output

Normally Open Output

Figure 4. Teaching independent minimum and maximum limits

The outputs are independent. To readjust minimum or

maximum limits for either output, follow the teach

procedure for that output only.

Repeat the teach procedure for the other output, if used.

Push Button Method

1. Enter Programming Mode

Action

Result

Push and hold the Output 1 button for output 1 or the Output 2
button for output 2

The corresponding output LED turns solid Red and the sensor waits
for first limit.

2. Teaching the First Limit

Action

Result

Position the target for the first limit

Click the same button (Output 1 button for output 1; Output 2
button for output 2)

Sensor learns the first limit position and the LED for the selected
output changes to flashing red

3. Teaching the Second Limit

U-GAGE QT50UDB Series Sensors with Dual-Discrete Outputs

P/N 110112 Rev. B