Printed in USA 02/05 P/N 108964 rev. A
U-GAGE™ S18U Series Sensors with Discrete Output
18 mm Ultrasonic Sensors with TEACH-Mode programming
Features
• Fast, easy-to-use TEACH-Mode programming; no potentiometer adjustments
• Short dead zone
• One NPN and one PNP output
• Two bi-colored status LEDs
• Rugged encapsulated design for harsh environments
• Choose 2 meter or 9 meter unterminated cable, or 5-pin Euro-style QD connector
• Wide operating range of -20° to +60°C (-13° to +140°F)
• Choose either straight or right-angle housing
• Temperature compensation
• Configurable for normally open or normally closed operation
• Fast response time (5 milliseconds)
Model
Number
Sensing
Range Cable* Supply
Voltage Output Housing
Configuration
S18UBA
30 to 300 mm
(1.2" to 11.8")
5-wire, 2 m (6.5') cable
10 to 30V dc Bipolar
NPN/PNP
Straight
S18UBAQ 5-pin Euro-style QD
S18UBAR 5-wire, 2 m (6.5') cable
Right-Angle
S18UBARQ 5-pin Euro-style QD
Models
WARNING . . . Not To Be Used for Personnel Protection
Never use these products as sensing devices for personnel protection. Doing so could lead to serious injury or death.
These sensors do NOT include the self-checking redundant circuitry necessary to allow their use in personnel safety
applications. A sensor failure or malfunction can cause either an energized or de-energized sensor output condition.
Consult your current Banner Safety Products catalog for safety products which meet OSHA, ANSI and IEC standards for
personnel protection.
!
* 9 m cables are available by adding suffix “W/30” to the model number of any cabled sensor (e.g., S18UBA W/30).
A model with a QD connector requires a mating cable; see page 10.
Straight Housing
Right-Angle Housing
Information about analog-output models is available on Banner’s website: www.bannerengineering.com
Ultrasonic Proximity Mode
Ultrasonic
U-GAGE™ S18U Series Sensor — Discrete Output
2 P/N 108964 rev. A
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
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
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:
Cm/s = 20 √273 + TC
Or, in English units:
Cft/s = 49 √460 + TF
Temperature Compensation
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.
The S18U 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 1.8% over the -20° to +60° C range.
NOTES:
• 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.
• The temperature warmup drift upon power-up is less than 1.7% of the sensing
distance. After 10 minutes, the apparent distance will be within 0.3% of the actual
position. After 25 minutes, the sensing distance will be stable.
D = distance from the sensor to the target
c = speed of sound in air
t = transit time for the ultrasonic pulse
Cm/s = speed of sound in meters per second
TC = temperature in °C
Cft/s = speed of sound in feet per second
TF = temperature in °F
P/N 108964 rev. A 3
U-GAGE™ S18U Series Sensor — Discrete Output
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Sensor Programming
Two TEACH methods may be used to program the sensor:
• Teach individual minimum and maximum limits, or
• Use Auto-Window feature to center a sensing window around the taught position.
The sensor may be programmed either via its push button, or via a remote switch.
Remote programming also may be used to disable the push button, preventing
unauthorized personnel from adjusting the programming settings. To access this
feature, connect the gray wire of the sensor to 0 - 2V 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 (see
programming procedures starting on page 4). The duration of each pulse
(corresponding to a push button “click”), and the period between multiple pulses, are
defined as “T”:
0.04 seconds < T < 0.8 seconds
Power/
Signal Strength
LED
TEACH/
Output Indicator
LED
TEACH
Push Button
PWR OUT
TEACH
Figure 1. Sensor features
Minimum
Operating
Range
Near
Setpoint
Far
Setpoint
Maximum
Operating
Range
Target
Target
Target
Target
Dead Zone
Output
Power
Output
Power
Output
Power
ON:
Green
OFF
Output
Power
OFF ON:
Green
ON:
Yellow
ON:
Green
OFF ON:
Red
OFF
Figure 2. TEACH Interface
Status Indicators
Power ON/OFF LED Indicates
OFF Power is OFF.
ON Red Target is weak or outside sensing range.
ON Green Sensor is operating normally, good target.
Output/Teach LED Indicates
OFF Target is outside window limits (normally open operation).
ON Yellow Target is within window limits (normally open operation).
ON Red (solid) In Teach Mode, waiting for first limit.
ON Red (flashing) In Teach Mode, waiting for second limit.
U-GAGE™ S18U Series Sensor — Discrete Output
4 P/N 108964 rev. A
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
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
Teaching Minimum and Maximum Limits
General Notes on Programming
• The sensor will return to Run mode if the first Teach condition is not registered
within 120 seconds.
• After the first limit is taught, the sensor will remain in Program mode until the Teach
sequence is finished.
• To exit Program mode without saving any changes, press and hold the programming
push button > 2 seconds (before teaching the second limit). The sensor will revert to
the last saved limits.
Figure 3. Teaching independent minimum
and maximum limits
Procedure
Result
Push Button Remote Wire
0.04 sec. < T < 0.8 sec.
Programming
Mode
• Push and hold the
push button
• No action required; sensor is ready for
first limit teach
Output LED: ON Red
Power LED: ON Green (good signal) or
ON Red (no signal)
Teach
First Limit
• Position the target for
the first limit • Position the target for the first limit Power LED: Must be ON Green
• “Click” the push button • Single-pulse the remote line
Teach Accepted
Output LED: Flashing Red
Teach Unacceptable
Output LED: ON Red
Teach
Second Limit
• Position the target for
the second limit • Position the target for the second limit Power LED: Must be ON Green
• “Click” the push button • Single-pulse the remote line
Teach Accepted
Output LED: Yellow or OFF
Teach Unacceptable
Output LED: Flashing Red
T
T
T
T
T
T T
TTT
T T
T T
T
T T
T T
T
T
T
T
T
T
T T
TTT
T T
T T
T
T T
T T
T
...
...
D
or
...
...
D
or
...
...
D
or
P/N 108964 rev. A 5
U-GAGE™ S18U Series Sensor — Discrete Output
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Procedure
Result
Push Button Remote Wire
0.04 sec. < T < 0.8 sec.
Programming
Mode
• Push and hold the
push button
• No action required; sensor is ready for
first limit teach
Output LED: ON Red
Power LED: ON Green (good signal) or
ON Red (no signal)
Teach Limit
• Position the target for
the center of the window
• Position the target for the center of the
window Power LED: Must be ON Green
• “Click” the push button • Single-pulse the remote line
Teach Accepted
Output LED: Flashing Red
Teach Unacceptable
Output LED: ON Red
Re-Teach
Limit
• Without moving the
target, “click” the
push button again
• Without moving the target,
single-pulse the remote line
again
Teach Accepted
Output LED: Yellow or OFF
Teach Unacceptable
Output LED: Flashing Red
T
T
T
T
T
T T
TTT
T T
T T
T
T T
T T
T
T
T
T
T
T
T T
TTT
T T
T T
T
T T
T T
T
...
...
D
or
...
...
D
or
...
...
D
or
Teaching Limits Using the Auto-Window Feature
Teaching the same limit twice for the same output automatically centers a 10 mm
window on the taught position.
General Notes on Programming
• The sensor will return to Run mode if the first Teach condition is not registered
within 120 seconds.
• After the first limit is taught, the sensor will remain in Program mode until the Teach
sequence is finished.
• To exit Program mode without saving any changes, press and hold the programming
push button > 2 seconds (before teaching the second limit). The sensor will revert to
the last saved program.
Output OFF Output ON Output OFF
Position
+ 5 mm
Position
- 5 mm
Position
+ 5 mm
Position
- 5 mm
Taught Position
Output ON Output ON
Output OFF
Taught Position
Normally Closed Operation
Normally Open Operation
Figure 4. Using the Auto-Window feature for
programming each output
Output OFF Output ON
Taught Position
(background surface)
Near
Range Position
-5 mm
Position
+5 mm
Sensor
Output
ON
Sensor
Output
OFF
Any object in this area will switch
the output, whether or not the object
returns a good signal to the sensor.
Sensing Distance
Figure 5. An application for the Auto-Window feature (retroreflective mode)
U-GAGE™ S18U Series Sensor — Discrete Output
6 P/N 108964 rev. A
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Push Button Lockout
Enables or disables the push button to prevent unauthorized adjustment of the program
settings.
Procedure
Result
Push Button Remote Wire
0.04 sec. < T < 0.8 sec.
Enable/Disable
Push Button
• Not available via push button • Four-pulse the remote line • Push buttons are either enabled or disabled,
depending on previous condition.
T
T
T
T
T
T T
TTT
T T
T T
T
T T
T T
T
Procedure
Result
Push Button Remote Wire
0.04 sec. < T < 0.8 sec.
Toggle between
N.O. / N.C. Operation
• Not available via push button • Triple-pulse the remote line
• Either Normally Open or Normally Closed
operation is selected, depending on previous
condition.
T
T
T
T
T
T T
TTT
T T
T T
T
T T
T T
T
Normally Open/Normally Closed Operation Select
The sensor can be configured for either normally open or normally closed operation
via the remote teach wire (gray). A series of three pulses on the line will toggle
between normally open and normally closed 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 Figures 3 and 4.
P/N 108964 rev. A 7
U-GAGE™ S18U Series Sensor — Discrete Output
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Sensing Range 30 to 300 mm (1.2" to 11.8")
Supply Voltage 10 to 30V dc (10% maximum ripple); 65 mA max. (exclusive of load), 40 mA typical @ 25V input
Ultrasonic Frequency 300 kHz, rep. rate 2.5 ms
Supply Protection Circuitry Protected against reverse polarity and transient voltages
Output Configuration SPST solid-state switch conducts when target is sensed within sensing window; one NPN (current sinking)
and one PNP (current sourcing) output in each model.
Output Protection Protected against short circuit conditions
Output Ratings 100 mA maximum
OFF-state leakage current: < 5 microamps
NPN saturation: < 200 mV @ 10 mA and < 600 mV @ 100 mA
PNP saturation: < 1.2V @ 10 mA and < 1.6V @ 100 mA
Output Response Time 5 milliseconds
Delay at Power-Up 300 milliseconds
Temperature Effect 0.02% of distance/ °C
Repeatability 0.5 mm
Minimum Window Size 5 mm
Hysteresis 0.7 mm
Adjustments Sensing window limits: TEACH-Mode programming of near and far window limits may be set using the
push button or remotely via TEACH input (see page 3).
Indicators Range Indicator (Red/Green) Green — Target is within sensing range
Red — Target is outside sensing range
OFF — Sensing power is OFF
Teach/Output Indicator (Yellow/Red) Yellow — Target is within taught limits
OFF — Target is outside taught window limits
Red — Sensor is in TEACH mode
Remote TEACH Input Impedance: 12 kΩ
Construction Threaded Barrel: Thermoplastic polyester Push Button Housing: ABS/PC
Push Button: Santoprene Lightpipes: Acrylic
Operating Conditions Temperature: -20° to +60° C (-4° to +140° F)
Maximum relative humidity: 100%
Connections 2 m (6.5') or 9 m (30') shielded 5-conductor (with drain) PVC jacketed attached cable or 5-pin
Euro-style quick-disconnect (see page 10 for quick-disconnect cable options)
Environmental Rating Leakproof design is rated IEC IP67; NEMA 6P
Vibration and Mechanical
Shock
All models meet Mil. Std. 202F requirements method 201A (vibration: 10 to 60Hz max., double amplitude
0.06", maximum acceleration 10G). Also meets IEC 947-5-2 requirements: 30G 11 ms duration, half sine
wave.
Temperature Warmup Drift Less than 1.7% of sensing distance upon power-up (see Temperature Compensation, page 2)
Application Notes Objects passing inside the specified near limit may produce a false response.
Certifications
Specifications
U-GAGE™ S18U Series Sensor — Discrete Output
8 P/N 108964 rev. A
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Effective Beam Pattern (Typical)
Sensor Response Curves
Maximum Target Rotation Angle
Lateral Distance
-5 mm
-10 mm
-15 mm
5 mm
0
10 mm
15 mm
20 mm
-20 mm
0 100 mm 150 mm50 mm 200 mm 250 mm 300 mm
Sensing Distance
2.25 mm rod
8 mm rod
50 mm x 50 mm
Target Rotation
Sensing Distance
-5°
-10°
-15°
5°
0
10°
15°
0 50 mm 100 mm 150 mm 200 mm 250 mm 300 mm
Aluminum target used: 50 mm x 50 mm
Hookups
Cabled Models QD Models
bk
gy
bn
bu
wh
+10 - 30V dc
shield
0 - 2V dc
Load
Load
Load
Load
bk
gy
bn
bu
wh
+10 - 30V dc
shield
0 - 2V dc
Remote Teach Remote Teach
NOTE: It is recommended that the shield wire be connected to earth ground or DC common.
P/N 108964 rev. A 9
U-GAGE™ S18U Series Sensor — Discrete Output
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Dimensions
53.8 mm
(2.12")
90.9 mm
(3.58")
95.1 mm
(3.75")
8.5 mm
(0.33")
58.0 mm
(2.29")
85.1 mm
(3.35")
53.8 mm
(2.12")
80.8 mm
(3.18")
8.5 mm
(0.33")
18.1 mm
(0.71")
18.0 mm
(0.71")
18.0 mm
(0.71")
58.0 mm
(2.29")
3.6 mm
(0.14")
10.6 mm
(0.42")
10.6 mm
(0.42")
Transducer
6.0 mm (0.24")
6.0 mm (0.24")
Transducer
Straight Housing
Right-Angle Housing
Cabled Models QD Models
Cabled Models QD Models
U-GAGE™ S18U Series Sensor — Discrete Output
10 P/N 108964 rev. A
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Quick-Disconnect Cables
Style Model Length Dimensions Pinout
5-pin
Euro-style
straight, with
shield
MQDEC2-506
MQDEC2-515
MQDEC2-530
2 m (6.5')
5 m (15')
9 m (30')
5-pin
Euro-style
right-angle,
with shield
MQDEC2-506RA
MQDEC2-515RA
MQDEC2-530RA
2 m (6.5')
5 m (15')
9 m (30')
White
Blue
Black
Brown
Gray
M12 x 1
ø 15 mm
(0.6")
44 mm max.
(1.7")
38 mm max.
(1.5")
M12 x 1
ø 15 mm
(0.6")
38 mm max.
(1.5")
Accessories
P/N 108964 rev. A 11
U-GAGE™ S18U Series Sensor — Discrete Output
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
SMB18A
• 12-gauge, stainless steel, right-angle
mounting bracket with a curved mounting
slot for versatility and orientation
• Clearance for M4 (#8) hardware
SMB18SF
• 18 mm swivel bracket
• Black thermoplastic polyester
• Includes stainless steel hardware
SMB18UR
• 2-piece universal 18 mm swivel bracket
• 300 series stainless steel
• Includes stainless steel swivel locking
hardware
18.5 mm
(0.73")
25.4 mm
(1.00")
41 mm
(1.6")
46 mm
(1.8")
30°
30 mm
(1.2")
R 24.2 mm
(0.95")
ø 4.6 mm*
(0.18")
4.6 mm*
(0.18")
* Use 4 mm (#8) screws
to mount bracket.
Drill screw holes
24.2 mm (0.95") apart.
7.6 mm
(0.30")
SMB18A BRACKET
36.0 mm
(1.42")
50.8 mm
(2.00")
42.0 mm
(1.65") 22.9 mm
(0.9")
25.4 mm
(1.00")
10.6 mm
(0.42")
M18 x 1
internal
thread
Mounting Brackets
50.8 mm
(2.0")
66.0 mm
(2.60")
41.7 mm
(1.64")
24.6 mm
(0.97")
20.8 mm
(0.82")
16.0 mm
(0.63 ")
45.2 mm
(1.78")
ø18.3 mm
(0.72")
2.7 mm
(0.10")
2.7 mm
(0.10")
27.2 mm
(1.07")
ø20.3 mm
(0.80")
ø30.5 mm
(1.20")
R2.5 mm
(0.10")
60º
60º
46.7 mm
(1.84")
9.7 mm
(0.38")
71.1 mm
(2.80")
20.3 mm
(0.80")
4X 6.9 mm
(0.27")
20.3 mm
(0.80")
33.8 mm
(1.33")
60º
25.4 mm
(1.00")
25.4 mm
(1.00")
8.1 mm
(0.32")
41.7 mm
(1.64")
20.8 mm
(0.82")
6X #10-32 Thru
ø30.5 mm
(1.20")
63.5 mm
(2.50")
SMB18UR Top
SMB18UR Bottom
Banner Engineering Corp., 9714 Tenth Ave. No., Minneapolis, MN USA 55441 • Phone: 763.544.3164 • www.bannerengineering.com • Email: sensors@bannerengineering.com
U-GAGE™ S18U Series Sensor — Discrete Output
P/N 108964 rev A.
WARRANTY: Banner Engineering Corp. warrants its products to be free from defects for
one year. Banner Engineering Corp. will repair or replace, free of charge, any product of its
manufacture found to be defective at the time it is returned to the factory during the warranty
period. This warranty does not cover damage or liability for the improper application of
Banner products. This warranty is in lieu of any other warranty either expressed or implied.
