Instruction Manual

colorSENSOR LT-1-LC-20
Compact color sensor

MICRO-EPSILON Eltrotec GmbH

Heinckelstraße 2
D-73066 Uhingen / Germany

Tel. +49/7161/98872-300
Fax +49/7161/98872-303
e-mail eltrotec@micro-epsilon.de
www.micro-epsilon.com

Certified acc. to DIN EN ISO 9001: 2008

colorSENSOR LT-1 Series • True Color Sensors Instruction Manual colorSENSOR LT-1-LC-20

colorSENSOR LT Series
colorSENSOR LT-1-LC-20
- Big working range: typ. 1 mm ... 500 mm
(depends on the fiber optics used and attachment optics)
- Big assortment of fiber optics available (reflected light or
transmitted light operation)
- Up to 31 colors can be stored
- RS232 interface (USB adapter is available)
- Super-bright white light LED (AC-, DC-, PULSE-operation
can be switched or OFF in case of luminous objects)
- Color detection, contrast detection and grey scale detection
- Insensitive to outside light
- Brightness control can be activated
- Switching frequency up to 35 kHz
- TEACH via PC or external input
- Various evaluation algorithms can be activated
- Averaging’ can be activated (from 1 up to over 32000 values)
- Color control of luminous objects (LEDs, halogen lamps,
displays, ...)
- “BEST HIT“ mode (“human color assessment“)
- 3-color filter detector (true color detector: “human color perception“)
- Temperature compensated based on empirical values

Design

Product name: Accessories: (cf. p. 8)

colorSENSOR LT-1-LC-20 Attachment optics

(incl. software colorCONTROL-S

Fiber optics adaptor

Mounting for connection of
possibilities fiber optics of LWL Series
(cf. separate data sheet)

Sturdy aluminum housing,

anodized in black

8-pole fem. connector Binder

Series 712
(connection to PLC)

Connecting cable:
CAB-M9-8P-St-ge; xm-PUR; open
4-pole fem. connector Binder Mounting
Series 707 possibilities
(RS232 interface) (threaded M4)

Connecting cable:
CAB-M5-4P-St-ge; xm-PUR; RS232
CAB-M5-4P-St-ge; xm-PVC; USB

Page 1
colorSENSOR LT-1 Series • True Color Sensors Instruction Manual colorSENSOR LT-1-LC-20

Technical Data

Type LT-1-LC-20

Article number 10234060

Dependent on the optical fibers used and the optical heads
Object distance
Reflex mode fiber optical cables typically 2 mm-15 mm with lens, typically 5 mm -100 mm 1)
Dependent on the optical fibers used and the optical heads
Light spot diameter
Reflex mode fiber optical cables, typically Ø 0.6 mm-20 mm 1)
Color difference ¨(•
Color spaces X/Y INT; s/i M (Lab)
Averaging More than max. 32768 values
Size of the color
0D[FRORUVLQQRQYRODWLOH((3520ZLWKSDUDPHWHUVHWV
memory
Switching frequency Max. 35 kHz (depending on number of colors being taught and the setting for the averaging)
Reproducibility In the x,y color range, 1 digit each with 12-Bit-A/D conversion
Temperature drift X,Y < 0.01% K
6XSHUEULJKWZKLWHOLJKW/('$&RU'&RU38/6(PRGHDGMXVWDEOHRU2))IRUVHOIOXPLQRXVRE-
Light source
jects, software-switchable)
Type of illumination Via optical fiber
(IIHFWWKURXJK
Suitable for flexibility
illumination
Ambient light 8SWR/X[LQ$&DQG38/6(PRGH
Intermittent light AC: typ. to 20 kHz
operation GHSHQGLQJRQDPSOLILFDWLRQOHYHO$03WR$03'&W\SWRN+]38/6(PRGHW\SWRN+]
3RZHUVXSSO\ +24 VDC (± 10 %), inverse polarity protected, overload-proof
Current consumption < 160 mA
Max. switching current 100mA, short-circuit protected
7($&+EXWWRQLQSXWV No button for external teaching of the color references apart from IN0
287287GLJLWDO98EVKRUWFLUFXLWSURWHFWHGP$PD[VZLWFKLQJFXUUHQWQSQ
Outputs pnp-capable
(bright or dark switching, switchable)
Switching state
-
display
Interface RS232
WR3/&SROHIODQJHVRFNHW%LQGHUVHULHV
Type of connector
WR3&SROHIODQJHVRFNHW%LQGHUVHULHV
Connection cable WRSRZHU3/&$UW1RWR3&5686%
Receiver FRORUILOWHUGHWHFWRU758(&2/25GHWHFWRUFRORUILOWHUFXUYHDVSHU&,(
Software colorCONTROL S
3XOVHH[WHQVLRQ Adjustable 0 ms-100 ms
Signal amplification VWDJH$03$03DGMXVWDEOH
Housing material Aluminium, black anodised
Operating
-20 °C - +55 °C
temperature
Storage temperature -20 °C - +85 °C
3URWHFWLRQFODVV ,3
(0&WHVWDFFRUGLQJ ',1(1
Optical fiber See color catalog, page 34 onwards
1)
7\S)$57$Ý5HIOH[
7\S)$'7$Ý7UDQVPLWWHGOLJKWSRQZDUGV

Page 2
colorSENSOR LT-1 Series • True Color Sensors Instruction Manual colorSENSOR LT-1-LC-20

Dimensions

All dimensions in mm

Page 3
colorSENSOR LT-1 Series • True Color Sensors Instruction Manual colorSENSOR LT-1-LC-20

Connector Assignment

Connection to PLC:
8-pole fem. connector Binder Series 712

Pin: Color: Assignment:

Connecting cable to PLC:
1 white GND (0V) CAB-M9-8P-St-ge; xm-PUR; open
2 brown +24VDC (±10%)
3 green IN0
4 yellow OUT0
5 grey OUT1
6 pink OUT2
7 blue OUT3
8 red OUT4

Connecting cable:
CAB-M9-8P-St-ge: 2m-PUR; open
CAB-M9-8P-St-ge: 5m-PUR; open
(Standard length 2 m)

Connection to PC:
4-pole fem. connector Binder Series 707

Pin: Assignment:

1 +24VDC (+Ub, OUT)

2 GND (0V)
3 RxD
4 TxD

Connecting cable:
CAB-M5-4P-St-ge; 2m-PUR; RS232
CAB-M5-4P-St-ge; 5m-PUR; RS232
(Standard length 2 m)

alternatively:
Connecting cable (incl. driver software):
CAB-M5-4P-St-ge; 2m-PVC; USB Connecting cable to PC (RS232 interface):
CAB-M5-4P-St-ge; 5m-PVC; USB CAB-M5-4P-St-ge; xm-PUR; RS232
(Standard length 2 m)

Connecting cable to PC (USB interface):

CAB-M5-4P-St-ge; xm-PVC; USB
(incl. driver software)

Page 4
colorSENSOR LT-1 Series • True Color Sensors Instruction Manual colorSENSOR LT-1-LC-20

Measuring Principle

Measuring principle of the color sensors of colorSENSOR LT-1 series:

The colorSENSOR LT-1 provides highly flexible signal acquisition. For example, the sensor can be operated in alternating-light
mode (AC mode), which makes the sensor insensitive to extraneous light. It also can be set to constant-light mode (DC mode),
which makes the sensor extremely fast and allows a scan-frequency of up to 35 kHz.
An OFF function turns off the integrated light source at the sensor and changes to DC operation. The sensor then can detect so-
called "self-luminous objects". In PULSE operation extremely dark surfaces can be reliably detected. With the stepless
adjustment of the integrated light source and the selectable gain of the receiver signal the sensor can be set to almost any
surface or any "self-luminous object".

When the integrated light source of the colorSENSOR LT-1 color sensor is activated, the sensor detects the radiation that is
diffusely reflected from the object. As a light source the colorSENSOR LT-1 color sensor uses a white-light LED with adjustable
transmitter power. An integrated 3-fold receiver for the red, green, and blue content of the light that is reflected from the object, or
the light that is emitted by a "self-luminous object", is used as a receiver. As mentioned above, a special feature here is that the
gain of the receiver can be set in 8 steps. This makes it possible to optimally adjust the sensor to almost any surface and to
different "self-luminous objects".

The colorSENSOR LT-1 color sensor can be "taught" up to 31 colors. For each of these taught colors it is possible to set
tolerances.
In X/Y INT or s/i M mode these tolerances form a color cylinder in space. In X/Y/INT or s/i/M mode the tolerances form a color
sphere in space. Color evaluation according to s/i M is based on the lab calculation method. All modes can be used in
combination with several operating modes such as "FIRST HIT" and "BEST HIT". Raw data are represented with 12 bit resolution.

Color detection either operates continuously or is started through an external PLC trigger signal.
The respective detected color either is provided as a binary code at the 5 digital outputs or can be sent directly to the outputs, if
only up to 5 colors are to be detected. [Please note: Visualisation by means of LEDs not available with colorSENSOR LT-1-LC-20]

Parameters and measurement values can be exchanged between a PC and the colorSENSOR LT-1 color sensor through the
serial RS232 interface. All the parameters for color detection also can be saved to the non-volatile EEPROM of the colorSENSOR
LT-1color sensor through this serial RS232 interface. When parameterisation is finished, the color sensor continues to operate
with the current parameters in STAND-ALONE mode without a PC.

The sensors of the colorSENSOR LT-1 series can be calibrated (white-light balancing). Balancing can be performed to any white
surface. A ColorCheckerTM table with 24 color fields is available as an alternative.

Page 5
colorSENSOR LT-1 Series • True Color Sensors Instruction Manual colorSENSOR LT-1-LC-20

Diagrams

2,4
Diagrams: SPOT DIAMETER

Spot diameter / Spotdurchmesser

depending on distance 2,2
2
1,8
1,6
1,4

[mm]
1,2
1
SPOT DIAMETER [distance], typ. 0,8
0,6
colorSENSOR LT-1-LC-20 0,4
with fiber opticsFAR-T-A1.1-1,5-1200-67°
0,2
and attachment optics KL-4
(fiber optics fixed at limit stop into attachment optics) 0
6 8 10 12 14 16
Distance / Abstand [mm]

10
Spot diameter / Spotdurchmesser

9
8
7
6
Fiber bundle Ø 2.5 mm
[mm]

5
4
3
SPOT DIAMETER [distance], typ. 2
1
colorSENSOR LT-1-LC-20
with fiber optics FAR-T-A2.0-2,5-600-67° 0
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Distance / Abstand [mm]

3,5
Spot diameter / Spotdurchmesser

2,5

2
[mm]

1,5
SPOT DIAMETER [distance], typ.
1
colorSENSOR LT-1-LC-20
with fiber optics FAR-T-A2.0-2,5-1200-67° 0,5
and attachment optics KL-3
(fiber optics fixed at limit stop into attachment optics) 0
6 7 8 9 10 11 12 13 14 15 16
Distance / Abstand [mm]

Page 6
colorSENSOR LT-1 Series • True Color Sensors Instruction Manual colorSENSOR LT-1-LC-20

Diagrams

10
Diagrams: SPOT DIAMETER

Spot diameter / Spotdurchmesser

depending on distance 9
8
7
6

[mm]
5
4
SPOT DIAMETER [distance], typ.
3
colorSENSOR LT-1-LC-20 2
with fiber optics FAR-T-A2.0-2,5-1200-67°
1
and attachment optics KL-M18-A2.0
(fiber optics fixed at limit stop into attachment optics) 0
10 15 20 25 30 35 40 45 50 55 60
Distance / Abstand [mm]

20
Spot diameter / Spotdurchmesser

19
18
17
16
15
[mm]

14
13
SPOT DIAMETER [distance], typ.
12
colorSENSOR LT-1-LC-20 11
with fiber optics FAR-T-A2.0-2,5-1200-67° 10
and attachment optics KL-M34-A2.0 9
(fiber optics fixed at limit stop into attachment optics)
8
40 60 80 100 120 140 160 180 200 220
Distance / Abstand [mm]

12
11
Spot diameter / Spotdurchmesser

10
short semiaxis
long semiaxis 9
8
7
Fiber gap 6 mm x 1 mm
[mm]

6
5
4
3
SPOT DIAMETER [distance], typ.
2
colorSENSOR LT-1-LC-20 1
with fiber optics FAR-T-R2.1-6x1-1200-67° 0
0 2 4 6 8 10 12 14 16 18 20 22 24 26

Distance / Abstand [mm]

Page 7
colorSENSOR LT-1 Series • True Color Sensors Instruction Manual colorSENSOR LT-1-LC-20

Attachment Optics

Article Object distance Detection range LWL

Type Dimensions
number (typ.) (typ.)* FASOP

LxØ
KL-3 10823012 8mm - 20mm 1mm - 5mm A 2.0 1)
ap. 60mm x 15mm

LxØ
KL-M18-A2.0 10823020 15mm - 50mm 2mm - 10mm A 2.0 1)
ap. 51mm x M18 x 1

LxØ
KL-M34 10823278 80mm - 150 mm 10mm - 20mm A 2.0 1)
ap. 71mm x M34 x 1.5

LxØ
KL-M34/62 10824196 80mm - 150 mm 2mm - 5mm A 2.0 1)
ap. 170mm x 62mm

LxØ
KL-4 10823262 8mm - 20mm 0.6mm - 3mm A 1.1 1)
ap. 60mm x 15mm

LxØ
KL-M18-A1.1 10824140 10mm - 50mm 2mm - 7mm A 1.1 1)
ap. 51mm x M18 x 1

LxWxH
KL-D-40 10824143 15mm - 25mm 3mm - 5mm A 2.0 2)
ap. 43.4 x 49.5 x 12mm

LxWxH
KL-D-28 10824197 20mm - 30mm 5mm - 8mm A 2.0 2)
ap. 31.7 x 40.5 x 15mm

LxWxH
KL-D-20 10823021 20mm - 40mm 4mm - 10mm A 2.0 2)
ap. 21.4 x 33 x 12mm

LxWxH
Kl-D-17 10823220 30mm - 80mm 8mm - 25mm A 2.0 2)
ap. 36.5 x 25.5 x 15mm

LxWxH
KL-D-14 10823022 60mm - 120mm 10mm - 20mm A 2.0 2)
ap. 37 x 50 x 20mm

LxWxH
KL-D-6 10823409 100mm - 200mm 15mm - 30mm A 2.0 2)
ap. 31.1 x 45.1 x 20mm

2mm x 0.3mm LxØ

KL-5 10824198 8mm - 20mm R 1.1 1)
to 15mm x 3mm ap. 60mm x 15mm

4mm x 0.7mm LxØ

KL-8 10823920 8mm - 20mm R 2.1 1)
to 30mm x 5mm ap. 60mm x 15mm

*The smallest figure in the table relates to the smallest typical optical diameter that is generated.
This corrresponds to roughly the smallest detection area for color or optical fiber sensors.
1)
Reflex optical fiber (FAR)
2)
Transmitted light mode fiber optical cables (FAD)

Page 8
MICRO-EPSILON Eltrotec GmbH
X9751274-A021032HDR
Heinkelstraße 2 · 73066 Uhingen / Germany
Tel. +49 (0) 7161 / 98872-300 · Fax +49 (0) 7161 / 98872-303
eltrotec@micro-epsilon.de · www.micro-epsilon.com *X9750274-A02*