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ULTRASONIC

U-GAGE® T30UX Series with Discrete Output

Ultrasonic Sensor with TEACH-Mode Configuration

• 1, 2 and 3 m (3.28, 6.56, and 9.84 ft) versions with short dead zones (10% of
max range)

• Built-in temperature compensation

• Fast, easy-to-use TEACH-Mode programming; no potentiometer adjustments

• Remote TEACH for security and convenience

• Wide operating temperature range of −40° to +70° C (−40° to +158° F)

• Outputs can be set for either NPN (sinking) or PNP (sourcing), Normally Open
(N.O.) or Normally Closed (N.C.)

• Compact, self-contained, right-angle sensor package with fully encapsulated
electronics

Models

Models Range and Frequency Cable

T30UXDA

T30UXDB

T30UXDC

100 mm to 1 m (3.9 in to 39 in)

224 kHz

200 mm to 2 m (7.8 in to 78 in)

174 kHz

300 mm to 3 m (11.8 in to 118 in)

114 kHz

Standard 2 m
(6.5 ft) cable

WARNING: Not To Be Used for Personnel Protection
Never use this device as a sensing device for personnel protection. Doing so could lead to serious
injury or death. This device does not include the self-checking redundant circuitry necessary to allow its

use in personnel safety applications. A sensor failure or malfunction can cause either an energized or de­energized sensor output condition.

1

Supply Voltage Discrete Output Response Time

45 ms

10 to 30V dc

NPN, PNP, NO,
NC, Selectable

92 ms

135 ms

1

Only standard 2 m (6.5 ft) cable models are listed. For 4-Pin Euro-Style integral QD, add suffix “Q8” to the model number (for example, T30UXDAQ8). For 150 mm (6 in) PUR pigtail
cable with 4-Pin threaded Euro-Style QD, add suffix “QPMA” to the model number (for example, T30UXDAQPMA). For 9 m (30 ft) cable, add suffix “W/30” to the model number (for
example, T30UXDA W/30). A model with a QD connector requires a mating cable; see Quick-Disconnect Cables on page 11.

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8/19/2013

Power ON/OFF
LED (Green)

Discrete Output
LED (Amber)

Signal Strength
LED (Red)

Mode LEDs
(Amber)

C

m/s

= 20 √

273 + T

C

ft/s

=

49 √460 + T

F

C

U-GAGE® T30UX Series with Discrete Output

Overview

The U-GAGE® T30UX is an easy-to-use ultrasonic sensor with extended range and
built-in temperature compensation. Simple push button configuration provides flexibili­ty for a variety of applications.

Easy-to-see indicator LEDs communicate the status of the sensor. The Green “Pow­er” LED ON indicates that the sensor is in Run Mode (the sensor’s normal operating
condition). The Red “Signal” LED indicates the target signal strength. The Amber
“Output” LED indicates that the output is enabled and the sensor is receiving a signal
within the window limits (depending on NO or NC). The Amber “Mode” LED indicates
the currently selected mode.

Figure 1. Features

Principles of Operation

Ultrasonic sensors emit one or multiple pulses of ultrasonic energy, which travel through the air at the speed of sound. A portion of this
energy reflects off the target and travels back to the sensor. The sensor measures the total time required for the energy to reach the
target and return to the sensor. The distance to the object is then calculated using the following formula: D = ct ÷ 2

D = distance from the sensor to the target
c = speed of sound in air
t = transit time for the ultrasonic pulse

To improve accuracy, an ultrasonic sensor may average the results of several pulses before outputting a new value.

Temperature Effects

The speed of sound is dependent upon the composition, pressure and temperature of the gas in which it is traveling. For most ultrasonic
applications, the composition and pressure of the gas are relatively fixed, while the temperature may fluctuate.

In air, the speed of sound varies with temperature according to the following approximation:

In metric units:

C

= speed of sound in meters per second C

m/s

In English units:

= speed of sound in feet per second

ft/s

TC = temperature in °C TF = temperature in °F

Temperature Compensation

Changes in air temperature affect the speed of sound, which in turn affects the total time for the echo 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.

The T30UX series ultrasonic sensors are temperature compensated. This reduces the error due to temperature by about 90%. The sen­sor will maintain its window limits to within 2.2% over the -40° to +70° C (−40° to +158° F) operating range of the sensor.

NOTE:

• Exposure to direct sunlight can affect the sensor’s ability to accurately compensate for changes in tem­perature.

• If the sensor is measuring across a temperature gradient, the compensation will be less effective.

Sensor Configuration

Two TEACH methods may be used to configure the sensor:

• Teach individual minimum and maximum limits, or

Rev. G

• Use Auto-Window feature to center a sensing window around the taught position.

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T T

T

U-GAGE® T30UX Series with Discrete Output

The sensor may be configured either via its push button, or via a remote switch. Remote configuration also may be used to disable the
push button, preventing unauthorized personnel from adjusting the configuration settings. To access this feature, connect the white wire
of the sensor to 0V dc, with a remote configuration switch between the sensor and the voltage.

Configuration 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 as “T”: 0.04 seconds < T < 0.8 seconds

Remote line configuration requires a greater than 1 second pause between pulse sequences.

Mode Setup - Output Configuration

Sensors can be set up for either NPN (sinking) or PNP (sourcing). In addition, the user can select between Normally Open (N.O.) and
Normally Closed (N.C.) operation. Normally Open is defined as the output energizing when the target is present. Normally Closed is
defined as the output energizing when the target is absent (see Figure 2. Teaching independent minimum and maximum limits on page

4).

Output Con­figuration
Mode

Select Out­put

Save and
Activate
Mode

0.04 sec. < “click” < 0.8 sec.

Procedure Result Procedure Result

Push and hold
MODE push button
for > 2 seconds

“Click” the MODE
push button to cycle
to correct selection:

• NPN - Normally
Open

• NPN - Normally
Closed

• PNP - Normally
Open

• PNP - Normally
Closed

Push and hold
MODE push button
for > 2 seconds

Push Button

Power LED: OFF

Mode LED: Flashing

Amber shows previ­ously selected mode

Power LED: OFF

Mode LED: Flashes to

indicate currently se­lected mode (120 sec­ond time out2)

Power LED: ON
Green

Mode LED: ON Amber
for selected mode

Remote Line

0.04 sec. < T < 0.8 sec.

Double-pulse the remote line

• Single-pulse for NPN - Nor­mally Open

• Double-pulse for NPN - Nor­mally Closed

• Triple-pulse for PNP - Nor­mally Open

• Quad-pulse for PNP - Normal­ly Closed

No action required; sensor will re­turn to Run Mode

Power LED: OFF

Mode LED: Flashing

Amber shows previously
selected mode

Power LED: ON Green

Mode LED: ON to indi-

cate currently selected
mode (Sensor returns to
RUN mode)

None

Teaching Minimum and Maximum Limits

General Notes on Teaching

• The sensor will return to RUN mode if the first TEACH condition is not registered within 120 seconds after the initial 2 second hold on
the Discrete push button.

• To exit TEACH mode without saving any changes, press and hold the Discrete push button or remote line longer than 2 seconds
(before teaching the second limit). The sensor will revert to the last saved limits.

• After the first limit is taught, the sensor will remain in TEACH mode until the TEACH sequence is finished or exited by a 2 second hold
on the Discrete push button or remote line.

2

The sensor will revert to previously saved configuration and return to RUN mode if TEACH is inactive for 120 seconds after the initial 2 second hold on push button

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Output OFF Output ON Output OFF

Minimum

Limit

Maximum

Limit

Output ON Output ONOutput OFF

Minimum

Limit

Maximum

Limit

Normally Closed Operation

Normally Open Operation

T

T

U-GAGE® T30UX Series with Discrete Output

Figure 2. Teaching independent minimum and maximum limits

TEACH
Mode

Teach First
Limit

Teach Sec­ond Limit

Push Button

0.04 sec. < “click” < 0.8 sec.

Procedure Result Procedure Result

Push and hold the
Discrete push button
longer than 2 sec­onds

Position the target for the first
limit (120 second time out)

“Click” the Discrete
push button

Position the target for the sec­ond limit (no time out)

“Click” the Discrete
push button

Power LED: OFF

Output LED: ON

Signal LED: Must be

ON Red or Flashing
Red3

Teach Accepted

Power LED: OFF

Output LED: Flashing

Teach Not Accepted

Output LED: ON

Signal LED: Must be

ON Red or Flashing
Red

Teach Accepted

Output LED: ON or

OFF, depending on
NO or NC Mode

Power LED: ON

Teach Not Accepted

Output LED: Flashing

Power LED: OFF

Remote Line

0.04 sec. < T < 0.8 sec.

No action required; sensor is ready

None

for first limit teach

Position the target for the first limit Signal LED: Must be

ON Red or Flashing

3

Red

Single-pulse the remote line

Teach Accepted

Power LED: OFF

Output LED: Flashing

Teach Not Accepted

Power LED: ON

Position the target for the second
limit (no time out)

Signal LED: Must be
ON Red or Flashing
Red

Single-pulse the remote line

Teach Accepted

Output LED: ON or

OFF, depending on
NO or NC Mode

Power LED: ON

Teach Not Accepted

Output LED: Flashing

Power LED: OFF

3

Sensor will not Teach or indicate “Teach Not Accepted” when there is no signal present (Signal LED Red or Flashing Red)

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Rev. G