R-GAGE® QT50R-RH Sensor

Datasheet
Radar-Based Retroreflective Sensors for Detection of Moving and Stationary Targets

• FMCW (true-presence) radar detects moving and stationary objects

• Retro-wave sensor - use of a reference signal (retroreflective target) enables
reliable detection of weak targets in the foreground
• Retro-wave detection - output activates for objects detected in the
foreground OR for loss of detection of the retroreflective target
• Easy setup and configuration of range, sensitivity, and output with simple DIP
switches
• Ignores objects in the background beyond the retroreflective target
• Double reflection immunity technology
• Sensing field is configured via remote TEACH
• Sensing functions are unaffected by wind, falling rain or snow, fog, humidity,
air temperatures, or light
• Sensor operates in Industrial, Scientific, and Medical (ISM)
telecommunication band
• Rugged IP67 housing withstands harsh environments

Protected by US patents

CAUTION: Make No Modifications to this Product

Any modifications to this product not expressly approved by Banner Engineering could void the user's
authority to operate the product. Contact Banner Engineering for more information.

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 de-energized sensor output condition.

Models
Maximum
Models1 Connection Supply Voltage Telecom Approval2 Output
Range

Telecom approved for US, Canada and

QT50R-US-RH
Brazil
12 to 30 V dc
Telecom approved for Europe, UK, Bipolar NPN/PNP
QT50R-EU-RH 12 m (39 5-wire 2 m (6.5 Australia, New Zealand, China, and
ft) ft) Integral cable Japan DIP-switch-selectable N.O.
or N.C.
QT50R-KR-RH 12 to 24 V dc Telecom approved for South Korea

QT50R-TW-RH 12 to 30 V dc Telecom approved for Taiwan

Overview
The R-GAGE sensor emits a well-defined beam of high-frequency radio waves from an internal antenna. This emitted
energy reflects off of a retroreflective target and returns to the receiving antenna. As long as the antenna is receiving
reflected radio waves, the output will remain off. If an object blocks radio waves, the output will turn on. The distance
range for the retroreflective target can be configured via remote TEACH wire. Objects beyond the retroreflective target are
ignored (also called background suppression). In Normally Closed mode, the output operates like a foreground suppression
sensor.

1 Cabled models only are listed. For integral 5-pin Euro-style (M12) quick-disconnect fitting, add suffix "Q" to the model number (for example,
QT50R-xx-RHQ). QD models require a mating cordset; see Quick Disconnect (QD) Cordsets on page 7.
2 For additional countries, contact Banner Engineering.

Original Document 17 August 2016

169604 Rev. E

169604
 R-GAGE® QT50R-RH Sensor

1. Power LED: Green (power ON)

2. Signal Strength LED: Red (flashes in proportion to
the signal strength)
3. Output LEDs: Yellow (output energized); Red
(configuration)

Access the DIP switches behind the threaded cap on the

sensor back (not shown)

Figure 1. R-GAGE features

Taught Reference
Near (e.g., wall or floor)
Range
Position Position
-0.4 m +0.5 m
Sensor
Output
OFF

Detects objects between sensor and reference target.

Detects loss or obstruction of reference target. Background
Sensor
Suppression
Output
Any object in this area will switch the output,
ON
whether or not the object returns a good signal to the sensor.

Output ON Output OFF Output ON

Sensing Distance

Figure 2. Sensor detects radio waves reflected from corner cube reflector or background. Any object blocking the signal results in an
output change

Sensor Configuration
Use the included spanner to open the screw-off cover on the back of the sensor and access the DIP switches.

Important: Tighten the DIP switch cover a full quarter turn after contact to maintain the watertight
seal.

DIP Switch Functions

Switch Function

1, 2, 3 Retro Sensitivity (contrast between retroreflective target and foreground targets)

4, 5 Foreground Sensitivity (improve detection of near-field mirror-like targets)

6 Normally open/normally closed output functionality

7, 8 Response Speed

DIP switch 1 is on the left and DIP switch 8 is on the right.

Retro Sensitivity Selection

Switch 1 Switch 2 Switch 3 Sensitivity Contrast

0 0 0 8 Use for weak retro with strong targets

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R-GAGE® QT50R-RH Sensor

Switch 1 Switch 2 Switch 3 Sensitivity Contrast

0 0 1 7

0 1 0 6

0* 1* 1* 5* Use for normal retro with normal targets

1 0 0 4

1 0 1 3

1 1 0 2

1 1 1 1 Use for strong retro with weak targets

* Default settings

Foreground Sensitivity/Double Reflection Immunity

* Default settings

If a radar sensor encounters a mirror-like target in the near field, for example, the roof of a vehicle, it is possible for the
sensor to detect the radio waves from the ceiling or wall behind the sensor that are being reflected by the target. The
target object may not be detected in this type of situation. Typically, this is only an issue on top-down target detection
when the sensor is mounted directly to a metal ceiling.

The Foreground Sensitivity DIP switch settings alleviate double reflections (mirror reflections). These settings are similar to
secondary echo rejection in ultrasonic sensors. Set the Foreground Sensitivity DIP switch to Highest for best performance
in top-down metal ceiling-mounted vehicle detection applications.

However, if there are strong reflections from peripheral objects within the full beam pattern of the sensor, the Highest
setting may cause unwanted detection of the peripheral objects. In this case, set the Foreground Sensitivity DIP switch to
Medium. Foreground sensitivity is designed for double reflections, not for strong peripheral reflections. When peripheral
reflections are too strong, determine whether eliminating double reflections or peripheral reflections is more important.
Depending on the decision, the foreground sensitivity may be turned to low when strong peripheral reflections are
detected.

The Foreground Sensitivity DIP switch has four settings ranging from highest to low. The factory default setting is low.

Switch 4 Switch 5 Sensitivity Use

0 0 Highest Mirror targets (double reflections) with no peripheral reflections (widest effective beam
pattern)

0 1 High

1 0 Medium Mirror targets (double reflections) with weak peripheral reflections that need to be ignored

1* 1* Low Strong peripheral reflections that need to be ignored (narrowest effective beam pattern).
Double reflection immunity is disabled.

Output Configuration
Switch 6 Normally Open/Normally Closed

0* N.O.

1 N.C.

* Default settings

Response Speed
Switch 7 Switch 8 ON (ms) OFF (ms) Total (ms)

0 0 30 70 100

0 1 30 120 150

1* 0* 50 300 350

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 R-GAGE® QT50R-RH Sensor

Switch 7 Switch 8 ON (ms) OFF (ms) Total (ms)

1 1 50 600 650

* Default settings

Installation
For optimal performance, the sensor should be aimed perpendicular to the surface of the retroreflective target. Angling the
sensor greater than 15 degrees with respect to a flat surface is not recommended.

The retroreflective target must be the strongest target in the field of view. If another equally strong background target is
in the field of view, the sensor may be taught the wrong target, or the sensing state may oscillate.

After installing, a remote TEACH must be performed to teach the sensor the retroreflective target. The sensor will not
operate correctly until a TEACH is performed. A TEACH must be performed each time the sensor is moved or the
retroreflective target changes.

Remote Line TEACH

The adjustable field, retroreflective target, and background suppression distances are set using a remote wire. For remote
programming, connect a switch or digital input to the gray wire (remote line); length of the individual pulses is equal to
the value T: 0.064 seconds < T < 0.8 seconds

Step Procedure Result

• Double-pulse the remote line

Access Remote Line Teach Output LEDs ON Red

• Single-pulse the remote wire

Teach Distance Output 1 LED flashes Red 10x

If the TEACH is successful, the sensor will be in a

Return to Run Mode Output LEDs OFF
non-sensing state (output LEDs OFF)

NOTE: A successful TEACH can be verified by placing an object in between the sensor and the
retroreflective target after the TEACH has been performed. This should cause both Output LEDs to turn
ON.

Windows
The R-GAGE sensor can be placed behind a glass or a plastic window, but the configuration must be tested and the
distance from the sensor to the window must be determined and controlled prior to installation. There is typically a 20%
signal reduction when the sensor is placed behind a window.

Polycarbonate at 4 mm thickness performs well in most situations, but the performance depends on filler materials.
Thinner (1 to 3 mm) windows have high reflection. The amount of reflection depends on the material, thickness, and
distance from the sensor to the window.

Locate the sensor in a position of minimum reflection from the window, which will repeat every 6.1 mm of distance
between the sensor and the window. The positions of maximum reflection from the window repeat between the minimums,
and decrease in effect until the window is approximately 150 mm (5.9 in) away. Consult the factory for pre-tested window
materials which can be used at any distance without issue.

Additionally, the face of the window should be protected from flowing water and ice by use of a flow diverter or hood
directly above the window. Falling rain or snow in the air in front of the window, light water mist, or small beads on the
face of the window are typically not an issue. However, a thick, continuous surface of water or ice directly on the face of
the window can be detected as a dielectric boundary.

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 R-GAGE® QT50R-RH Sensor

Specifications
Range Indicators
The sensor is able to detect a proper retroreflective target (see Power LED: Green (power ON)
Detectable Objects) up to 12 m (39.4 ft), depending on target Signal Strength LED: Red, flashes in proportion to signal strength.
Detectable Objects Steady on at 4x excess gain. Only indicates signal amplitude, not
target distance.
Objects containing metal, water, or similar high-dielectric materials
Output LEDs: Yellow (output energized) / Red (configuration)
Operating Principle See Figure 1 on page 2
Frequency modulated continuous-wave (FMCW) radar
Adjustments
Operating Frequency DIP-switch-configurable sensitivity, response time, and output
US, TW Models: 24.075–24.175 GHz, ISM Band configuration; remote line teach of the retroreflective target
EU, KR Models: 24.050–24.250 GHz, ISM Band
Construction
Maximum Output Power Housing: ABS/polycarbonate
ERP: 3.3 mW, 5 dBm Lightpipes: Acrylic
EIRP: 100 mW, 20 dBm Access Cap: Polyester
Supply Voltage Connections
12 to 30 V dc, less than 100 mA, exclusive of load Integral 5-wire 2 m (6.5 ft) cable or M12 Euro-style QD fitting. QD
For KR models: 12 to 24 V dc, less than 100 mA exclusive of load models require a mating cordset

Supply Protection Circuitry Operating Temperature

Protected against reverse polarity and transient overvoltages −40 °C to +65 °C (−40 °F to +149 °F)
Delay at Power-up Environmental Rating
Less than 2 seconds IEC IP67
Output Configuration Certifications
Bipolar NPN/PNP output, 150mA; DIP switch 6 selects N.O. (default) or
N.C. operation
Output Protection ETSI/EN 300 440
Protected against short circuit conditions FCC part 15
RSS-210
Response Time
ANATEL Category II
DIP switches 7 & 8 select ON/OFF response time
CMIIT Category G
ARIB STD T-73
KC mark - MSIP/RRA
NCC
for others, contact Banner Engineering
Country of Origin: USA

FCC ID: UE3QT50RUS—This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.

IC: 7044A-QR50RCA—This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to
the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference,
including interference that may cause undesired operation of the device.

Cet appareil est conforme aux CNR exempts de licence d'Industrie Canada. Son fonctionnement est soumis aux deux
conditions suivantes:(1) Ce dispositif ne peut causer des interférences; et(2) Ce dispositif doit accepter toute interférence,
y compris les interférences qui peuvent entraîner un mauvais fonctionnement de l'appareil.

Este equipamento opera em caráter secundário, isto é, não tem direito à

proteção contra interferência prejudicial, mesmo de estações do mesmo
tipo e não pode causar interferência a sistemas operando em caráter
primário.

SRD24-IO3B24100.2TR0.1 South Korea Class A Certification

A 급 기기 ( 업무용 방송통신기자재 )

이 기기는 업무용 (A 급 ) 으로 전자파적합기기로

서 판매자 또는 사용자는 이 점을 주의하시기
바라며 , 가정외의 지역에서 사용하는 것을 목
적으로 합니다 .

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 R-GAGE® QT50R-RH Sensor

Beam Patterns
Typical Beam Pattern (with BRTR-CC20E Radar Typical Beam Pattern (with 4 different targets) at
Target, Radar Cross Section = 50 m2) sensitivity level 5

Left-Right Beam Pattern Left-Right Beam Pattern

8m 8m
Sensitivity 8 8 7 6
4
6m 5 6m
4
3
4m 4m 3
2

1 2
2m 2m
Sensitivity 1
1
0 0

-2 m -2 m

-4 m -4 m

-6 m -6 m

-8 m -8 m
0 4m 8m 12 m 16 m 0 4m 8m 12 m 16 m

Distance Distance

1–8: Indicates sensitivity level 1. Weak Object (Radar cross section = 0.25 m2)
2. Car (Radar cross section = 3 m2)
3. Large Truck (Radar cross section = 50 m2)
4. Passenger Train (Radar cross section = 300 m2)

NOTE: The effective beam pattern depends on the sensitivity level and target properties.

The diagrams show the beam pattern with respect to the retroreflective target. The effective beam pattern for detection of
foreground objects will be the size of the retroreflective target. For a flat retroreflective surface, the beam size is a 15
degree cone.

Dimensions
74.1 mm
46.1 mm (2.92")
(1.82")
37.0 mm 4X Ø4.4 mm
38.1 mm (1.46")
(1.50") (Ø 0.17")

33.0 mm
(1.30")

66.0 mm 50.8 mm
(2.60") (2.00") 19.7 mm
(0.78")

R45.0 mm 37.0 mm
(R1.77") (1.46")

34.2 mm
(1.35")
M30 X 1.5
ISO-6g

50.8 mm
(2.00")

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R-GAGE® QT50R-RH Sensor

Wiring

Wiring Key:
1 + 1 = Brown
2 = White
3 12-30V dc
– 3 = Blue
4 = Black
2 5 = Gray (Float or connect to V+ for idle operation. Switch to
Load 1
ground for remote TEACH operation)
4
Load 2
5 Remote TEACH

shield (QD cordset)

NOTE: Banner recommends that the shield wire (QD cordsets only) be connected to earth ground or dc
common. Shielded cordsets are recommended for all QD models.

Accessories

Quick Disconnect (QD) Cordsets

5-Pin Threaded M12/Euro-Style Cordsets—with Shield

Model Length Style Dimensions Pinout (Female)

MQDEC2-506 1.83 m (6 ft)

44 Typ.
MQDEC2-515 4.57 m (15 ft)

MQDEC2-530 9.14 m (30 ft) Straight

M12 x 1 2
MQDEC2-550 15.2 m (50 ft) ø 14.5 1
3
MQDEC2-506RA 1.83 m (6 ft) 4 5
32 Typ.
MQDEC2-515RA 4.57 m (15 ft) [1.26"] 1 = Brown
2 = White
MQDEC2-530RA 9.14 m (30 ft) 3 = Blue
30 Typ.
Right-Angle [1.18"] 4 = Black
5 = Gray

MQDEC2-550RA 15.2 m (50 ft) M12 x 1

ø 14.5 [0.57"]

NOTE: Pin 5 is not used.

Mounting Brackets
All measurements are in mm

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 R-GAGE® QT50R-RH Sensor

SMB30SC 67 SMB30MM
• Swivel bracket with 30 mm • 12-ga. stainless steel bracket 70 57
B
mounting hole for sensor with curved mounting slots
• Black reinforced 58
for versatile orientation
C
thermoplastic polyester • Clearance for M6 (¼ in) 57
• Stainless steel mounting and hardware B
swivel locking hardware • Mounting hole for 30 mm
included 29
A
sensor A

Hole center spacing: A=ø 50.8 Hole center spacing: A = 51, A to B = 25.4
Hole size: A=ø 7.0, B=ø 30.0 Hole size: A = 42.6 x 7, B = ø 6.4, C = ø 30.1

Retroreflective Target

BRTR-CC20E
• Large corner-cube reflector in protective plastic enclosure
• Provides 7x excess gain at 6 m

Weather Deflector

QT50RCK
• Required if the R-GAGE is exposed to rain or snow
• Prevents buildup of water or ice from interfering with sensor
performance

Banner Engineering Corp. Limited Warranty

Banner Engineering Corp. warrants its products to be free from defects in material and workmanship for one year following the date of shipment. Banner Engineering Corp.
will repair or replace, free of charge, any product of its manufacture which, at the time it is returned to the factory, is found to have been defective during the warranty
period. This warranty does not cover damage or liability for misuse, abuse, or the improper application or installation of the Banner product.
THIS LIMITED WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED (INCLUDING, WITHOUT LIMITATION,
ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), AND WHETHER ARISING UNDER COURSE OF PERFORMANCE, COURSE
OF DEALING OR TRADE USAGE.

This Warranty is exclusive and limited to repair or, at the discretion of Banner Engineering Corp., replacement. IN NO EVENT SHALL BANNER ENGINEERING CORP. BE
LIABLE TO BUYER OR ANY OTHER PERSON OR ENTITY FOR ANY EXTRA COSTS, EXPENSES, LOSSES, LOSS OF PROFITS, OR ANY INCIDENTAL,
CONSEQUENTIAL OR SPECIAL DAMAGES RESULTING FROM ANY PRODUCT DEFECT OR FROM THE USE OR INABILITY TO USE THE PRODUCT, WHETHER
ARISING IN CONTRACT OR WARRANTY, STATUTE, TORT, STRICT LIABILITY, NEGLIGENCE, OR OTHERWISE.

Banner Engineering Corp. reserves the right to change, modify or improve the design of the product without assuming any obligations or liabilities relating to any product
previously manufactured by Banner Engineering Corp. Any misuse, abuse, or improper application or installation of this product or use of the product for personal protection
applications when the product is identified as not intended for such purposes will void the product warranty. Any modifications to this product without prior express approval
by Banner Engineering Corp will void the product warranties. All specifications published in this document are subject to change; Banner reserves the right to modify product
specifications or update documentation at any time. For the most recent version of any documentation, refer to: www.bannerengineering.com.

© Banner Engineering Corp. All rights reserved