REER micron PHOTOELECTRIC MEASUREMENT LIGHT CURTAIN Installation Guide

REER micron PHOTOELECTRIC MEASUREMENT LIGHT CURTAIN

Micron light curtains MUST NOT be used as safety devices for protection of operators in hazardous areas.

INTRODUCTION

The Micron photoelectric light curtain is a multi-beam optoelectronic system consisting of an emitter and a receiver, used to detect or measure objects.
The two units can be synchronized via optical link or cable.
The status of the light curtain outputs (which reside in the receiver) changes as soon as a measurement is performed (or an object is detected).

Beam positioning

The following figure shows the arrangement of the beams and their numbering:

Figure 1

• Beam n (sync)
• Beam n-1
• Beam 6
• Beam 5
• Beam 4
• Beam 3
• Beam 2
• Beam 1

➔ Note that beams must always be numbered starting from the bottom, as shown in figure 1. If synchronized via cable, the last beam can also be used for measurements.
➔ With optical synchronization, the uppermost beam must never be obstructed as this would interrupt the measurement function.

Working range

Particular operating conditions may affect the sensing level of photo-electric devices. In environments characterized by fog, rain, fumes or dust, to always guarantee correct operation of the appliance, it is advisable to apply suitable correction factors Cf so as to maximum working range values. In these cases:
Pu = Pm x Fc

where Pu and Pm are, respectively, the working and maximum range expressed in meters.
The recommended correction factors CF are indicated in the table below.

➔If the device is installed in environments characterized by sudden changes in temperature, suitable precautions must be taken to prevent the formation of condensation on the mirrors, which could impair detection capability.

ELECTRICAL CONNECTIONS

• Perform the connections as shown in below tables, in order to ensure the correct functioning of the barrier.
• We recommend the use of separate power supplies for the barrier and for other electrical power equipment (electric motors, inverters, frequency converters) or other sources of disturbance.
• We recommend the use of a shielded cable for the connection of serial RS-485 (Micron B).

Emitter connections (AV/AC/B models)

Table 1 – M12, 5-pole

Emitter connections (C models)

Table 2 – M12, 5-pole

Receiver connections (AV/AC models)

mA
2| Brown| 24VDC| –| 24 VDC power supply| –
3| Green| OUT1| OUTPUT| Static output 1| 24 VDC, 100 mA
4| Yellow| INPUT| INPUT| Input with programmable functions| Compliant with EN 61131-2
5| Grey| ANALOG_OUT2| OUT| Analog output 2 (AC)| 4÷20 mA current output

• Analog output 2 (AV)| 0÷10 VDC voltage output *
  6| Pink| ANALOG_OUT1| OUT| Analog output 1 (AC)| 4÷20 mA current output

• Analog output 1 (AV)| 0÷10 VDC voltage output *
  7| Blue| 0VDC| –| 0 VDC power supply| –
  8| Red| PE| –| Ground connection| –

Table 3 – M12, 8-pole RX

* (Refers to 0 VDC, pin 7)

Receiver connections (B models)

61131-2
5| Grey| LINE – (A)| IN/OUT| RS485 -(A) serial line| RS-485
6| Pink| LINE + (B)| IN/OUT| RS485 +(B) serial line| RS-485
7| Blue| 0VDC| –| 0 VDC power supply| –
8| Red| PE| –| Ground connection| –

Table 4 – M12, 8-pole RX

Receiver connections (C models)

Table 5 – M12, 5-pole RX (C models)

Micron-PC connection via USB cable (ReeR CSU M5 – 1250900)

AC/AV/B models are fitted with an M5 connector (leading from the receiver) for connecting the light curtain to a PC on which the Micron configuration SW is installed.

First, connect the M5 connector to the light curtain, then insert the USB connector into the PC.

Push-Pull Outputs (models with step 10mm, 20mm, 30mm STANDARD MODELS)
The models with step 10mm, 20mm, 30mm STANDARD (not H models) are provided with digital outputs 0-24VDC Push-Pull type.
These outputs can operate both in PNP and NPN mode. At the power-on the barrier recognizes the type of connection of the load and operates accordingly.
The two outputs are independent and can be connected to a load such as a PNP and the other to a load NPN. The figure below shows all the possible connections.
Warning: it is essential to turn off and on the barrier Micron after changing the output connections.

Warnings about connection cables

• Cables must not be more than 50m long.
• Keep the power supply to the light curtain separate from that to other electric power equipment (electric motors, inverters, frequency converters) or other sources of disturbance.
• Connect the emitter and the receiver to the ground socket.
• Connection cables must follow different paths from other power cables.

The emitter, the receiver and the device connected to the outputs must have the ground (0 VDC) connection in common.

INDICATOR LAMPS

EMITTER (AC/AC/B/C)

TRI-COLOUR LEDS
(Red/Green/Orange)| MEANING
RED| System start.
RED BLINKING| FAIL condition
GREEN| Normal operation. At power on:

• 2 slow blinks -> Low range
• 2 fast blinks -> High range

ORANGE BLINKING| No synchronization via cable

RECEIVER (AC/AV/B)

BI-COLOUR
(Red/Green)| BI-COLOUR
(Orange/Blue)| MEANING
RED| –| Light curtain obstructed
GREEN| –| Light curtain clear
–| ORANGE| Connected to PC via USB
–| BLUE| Input active/recognition activated
–| BLUE BLINKING| Pattern recognition
–| BLUE 3 BLINKS| No pattern
RED BLINKING| –| FAIL condition
RED CONSTANT WITH 1 BREAK| –| No sync
RED/GREEN WITH 3 BREAKS| –| Analog Output Overload (AV models)
Analog Outputs not connected (AC models)
RED/GREEN WITH 4 BREAKS| –| Digital Outputs overload or failure(models 10mm, 20mm, 30mm)

RECEIVER (C)

BI-COLOUR

(Red/Green)

| BI-COLOUR

(Orange/Blue)

| MEANING
RED| –| Light curtain obstructed
GREEN| –| Light curtain clear
RED BLINKING| –| FAIL condition
__ RED CONSTANT WITH 1 BREAK| –| No sync

TECHNICAL FEATURES

Micron 5mm SAFETY CURTAIN TECHNICAL FEATURES

Model| AV/AC| B| C
Operating range (REDUCED)  m (selectable from software)| 0¸0,6 / 0,6¸1,5| 0¸0,6 / 0,6¸1,5| __

0¸1 / 0,6¸2,5

Operating range (NORMAL)      m (selectable from software)| 0¸1 / 0,6¸2,5| 0¸1 / 0,6¸2,5
Power supply                       VDC| 24 ± 20%| 24 ± 20%| 24 ± 20%
Connections| M12 – 5-pole emitter / M12 – 8-pole receiver
M5 – 4-pole connector (USB) for software configuration| M12 – 5-pole emitter / M12 – 8-pole receiver
M5 – 4-pole connector (USB) for software configuration| M12 – 5-pole emitter /
M12 – 5-pole receiver
Measurement time| *(70 us number of beams + 500 us)n
( n = 1÷3 based on the scan cycles configured)| (70 us number of beams + 500 us)2
Synchronization| Optical or via cable, selectable| Optical
Max power                              W| 1 (Emitter)/ 2 (Receiver)| 1 (Emitter)/ 2 (Receiver)| 1 (Emitter)/ 2 (Receiver)
Digital outputs| 2 static outputs: 100 mA @ 24 VDC PNP(configurable functions)| 2 static outputs: 100 mA @ 24 VDC PNP(configurable functions)| 2 static outputs: 100 mA @ 24 VDC PNP(antiviolent logic)
Analog outputs (AC MODELS)**| 2 current outputs 4÷20 mA + 2% (refers to 0 VDC) (configurable functions)

OPERATING WITH 10 ÷ 470 Ohm LOAD RESISTOR

| –| –
Analog outputs (AV MODELS)| 2 voltage outputs 0÷10 VDC + 2% (Refers to 0 VDC) / 10 mA max
(configurable functions)| –| –
RS-485 output (B MODELS)| –| Compliant with the RS-485 standard
min Baud Rate = 2400 / max Baud Rate =115200 (configurable function)| __

–

Inputs| Input with configurable functions (0/24 VDC)| Input with configurable functions (0/24 VDC)| –
Minimum duration of Input signal (ms)| 5| 5| –
Max. connect. length m| 50| 50| 100
Operating temp.   °C| -10 ¸ 55°C| -10 ¸ 55°C| -10 ¸ 55°C
Protection class| IP 65 – IP 67| IP 65 – IP 67| IP 65 – IP 67

Micron 10mm, 20mm, 30mm MEASURE CURTAIN TECHNICAL FEATURES

Model| AV/AC| B| C
Operating range                    m| 0¸2 / 1¸10| 0¸2 / 1¸10| 0¸2 / 1¸10
Power supply                      VDC| 24 ± 20%| 24 ± 20%| 24 ± 20%
Connections| M12 – 5-pole emitter / M12 – 8-pole receiver
M5 – 4-pole connector (USB) for software configuration| M12 – 5-pole emitter / M12 – 8-pole receiver
M5 – 4-pole connector (USB) for software configuration| M12 – 5-pole emitter /
M12 – 5-pole receiver
Measurement time| (70 us number of beams + 500 us)
( n = 1÷3 based on the scan cycles configured)| (70 us number of beams + 500 us)2
Synchronization| Optical or via cable, selectable| Optical
Max power               W| 1 (Emitter)/ 2 (Receiver)| 1 (Emitter)/ 2 (Receiver)| 1 (Emitter)/ 2 (Receiver)
Digital outputs| 2 static outputs: 100 mA @ 24VDC Push-Pull
(configurable functions)| 2 static outputs: 100 mA @ 24VDC Push-Pull
(configurable functions)| 2 static outputs: 100 mA @ 24VDC Push- Pull(antiviolent logic)
Analog outputs (AC MODELS)| 2 current outputs 4÷20 mA + 2% (refers to 0 VDC) (configurable functions)
OPERATING WITH 10 ÷ 470 Ohm LOAD RESISTOR| __

–

| __

–

Analog outputs (AV MODELS)| 2 voltage outputs 0÷10 VDC + 2% (Refers to 0 VDC) / 10 mA max
(configurable functions)| –| –
RS-485 output (B MODELS)| –| Compliant with the RS-485 standard
min Baud Rate = 2400 / max Baud Rate =115200
(configurable function)| __

–

Inputs| Input with configurable functions (0/24 VDC)| Input with configurable functions (0/24 VDC)| –
Minimum duration of Input signal

(ms)

| 5| 5| –
Max. connect. length             m| 50| 50| 100
Operating temp.                   °C| -10 ¸ 55°C| -10 ¸ 55°C| -10 ¸ 55°C
Protection class| IP 65 – IP 67| IP 65 – IP 67| IP 65 – IP 67
Micron 10mm, 30mm (H) MEASURE CURTAIN TECHNICAL FEATURES

Model| AVH / ACH| BH| CH
Operating range (REDUCED)      m (selectable from software)| 0¸3 / 0¸8| 0¸3 / 0¸8| 0¸8 / 1¸18
Operating range (NORMAL)      m (selectable from software)| 0¸8 / 1¸18| 0¸8 / 1¸18
Power supply                       VDC| 24 ± 20%| 24 ± 20%| 24 ± 20%
Connections| M12 – 5-pole emitter / M12 – 8-pole receiver
M5 – 4-pole connector (USB) for software configuration| M12 – 5-pole emitter / M12 – 8-pole receiver
M5 – 4-pole connector (USB) for software configuration| M12 – 5-pole emitter /
M12 – 5-pole receiver
Measurement time| *(70 us number of beams + 500 us)
( n = 1÷3 based on the scan cycles configured)| (70 us number of beams + 500 us)2
Synchronization| Optical or via cable, selectable| Optical
Max power                              W| 1 (Emitter)/ 2 (Receiver)| 1 (Emitter)/ 2 (Receiver)| 1 (Emitter)/ 2 (Receiver)
Digital outputs| 2 static outputs: 100 mA @ 24 VDC PNP
(configurable functions)| 2 static outputs: 100 mA @ 24 VDC PNP
(configurable functions)| 2 static outputs: 100 mA @ 24 VDC PNP
(antiviolent logic)
Analog outputs (AC MODELS)**| 2 current outputs 4÷20 mA + 2% (refers to 0 VDC) (configurable functions)
OPERATING WITH 10 ÷ 470 Ohm LOAD RESISTOR| __

–

| __

–

Analog outputs (AV MODELS)| 2 voltage outputs 0÷10 VDC + 2% (Refers to 0 VDC) / 10 mA max
(configurable functions)| –| –
RS-485 output (B MODELS)| __

–

| Compliant with the RS-485 standard
min Baud Rate = 2400 / max Baud Rate =115200
(configurable function)| __

–

Inputs| Input with configurable functions (0/24 VDC)| Input with configurable functions (0/24 VDC)| –
Minimum duration of Input signal

(ms)

| 5| 5| –
Max. connect. length             m| 50| 50| 100
Operating temp.                   °C| -10 ¸ 55°C| -10 ¸ 55°C| -10 ¸ 55°C
Protection class| IP 65 – IP 67| IP 65 – IP 67| IP 65 – IP 67
Micron 25mm, 50mm, 75mm SAFETY CURTAIN TECHNICAL FEATURES

Model| AV/AC| B| C
Operating range (REDUCED)      m (selectable from software)| 0¸3 / 0¸8| 0¸3 / 0¸8| __

0¸8 / 1¸18

Operating range (NORMAL)      m (selectable from software)| 0¸8 / 1¸18| 0¸8 / 1¸18
Power supply                       VDC| 24 ± 20%| 24 ± 20%| 24 ± 20%
Connections| M12 – 5-pole emitter / M12 – 8-pole receiver
M5 – 4-pole connector (USB) for software configuration| M12 – 5-pole emitter / M12 – 8-pole receiver
M5 – 4-pole connector (USB) for software configuration| M12 – 5-pole emitter /
M12 – 5-pole receiver
Measurement time| (70 us number of beams + 500 us) ( n = 1÷3 based on the scan cycles configured)| (70 us number of beams + 500 us)2
Synchronization| Optical or via cable, selectable| Optical
Max power                              W| 1 (Emitter)/ 2 (Receiver)| 1 (Emitter)/ 2 (Receiver)| 1 (Emitter)/ 2 (Receiver)
Digital outputs| 2 static outputs: 100 mA @ 24 VDC PNP
(configurable functions)| 2 static outputs: 100 mA @ 24 VDC PNP
(configurable functions)| 2 static outputs: 100 mA @ 24 VDC PNP
(antiviolent logic)
Analog outputs (AC MODELS)| 2 current outputs 4÷20 mA + 2% (refers to 0 VDC) (configurable functions)

OPERATING WITH 10 ÷ 470 Ohm LOAD RESISTOR

| __

–

| __

–

Analog outputs (AV MODELS)| 2 voltage outputs 0÷10 VDC + 2% (Refers to 0 VDC) / 10 mA max
(configurable functions)| –| –
RS-485 output (B MODELS)| __

–

| Compliant with the RS-485 standard
min Baud Rate = 2400 / max Baud Rate =115200
(configurable function)| __

–

Inputs| Input with configurable functions (0/24 VDC)| Input with configurable functions (0/24 VDC)| –
Minimum duration of Input signal (ms)| 5| 5| –
Max. connect. length m| 50| 50| 100
Operating temp.        °C| -10 ¸ 55°C| -10 ¸ 55°C| -10 ¸ 55°C
Protection class| IP 65 – IP 67| IP 65 – IP 67| IP 65 – IP 67
Beam spacing 5 mm

Model| 150| 300| 450| 600| 750| 900| 1050| 1200| 1350| 1500
Measurement height (mm)| 145| 295| 445| 595| 745| 895| 1045| 1195| 1345| 1495
Number of beams| 30| 60| 90| 120| 150| 180| 210| 240| 270| 300
Beam spacing 10 mm
Model| 151| 301| 451| 601| 751| 901| 1051| 1201| 1351| 1501| 1651| 1801| 1951| 2101| 2251| 2401| 2551| 2701| 2851| 3001
Measurement

height (mm)

| 140| 290| 440| 590| 740| 890| 1040| 1190| 1340| 1490| 1640| 1790| 1940| 2090| 2240| 2390| 2540| 2690| 2840| 2990
Number of beams| 15| 30| 45| 60| 75| 90| 105| 120| 135| 150| 165| 180| 195| 210| 225| 240| 255| 270| 285| 300
Beam spacing 20 mm
Model| 150-20| 300-20| 450-20| 600-20| 750-20| 900-20| 1050- 20| 1200- 20| 1350- 20| 1500- 20| 1650- 20| 1800- 20| 1950- 20| 2100- 20| 2250- 20| 2400- 20| 2550- 20| 2700- 20| 2850- 20| 3000- 20
Measurement

height (mm)

| 130| 280| 430| 580| 730| 880| 1030| 1180| 1330| 1480| 1630| 1780| 1930| 2080| 2230| 2380| 2530| 2680| 2830| 2980
Number of beams| 8| 15| 23| 30| 38| 45| 53| 60| 68| 75| 83| 90| 98| 105| 113| 120| 128| 135| 143| 150
Beam spacing 25 mm
Model| 152| 302| 452| 602| 752| 902| 1052| 1202| 1352| 1502| 1652| 1802| 1952| 2102| 2252| 2402| 2552| 2702| 2852| 3002
Measurement

height (mm)

| 125| 275| 425| 575| 725| 875| 1025| 1175| 1325| 1475| 1625| 1775| 1925| 2075| 2225| 2375| 2525| 2675| 2825| 2975
Number of beams| 6| 12| 18| 24| 30| 36| 42| 48| 54| 60| 66| 72| 78| 84| 90| 96| 102| 108| 114| 120
Beam spacing 30 mm
Model| 153| 303| 453| 603| 753| 903| 1053| 1203| 1353| 1503| 1653| 1803| 1953| 2103| 2253| 2403| 2553| 2703| 2853| 3003
Measurement

height (mm)

| 120| 270| 420| 570| 720| 870| 1020| 1170| 1320| 1470| 1620| 1770| 1920| 2070| 2220| 2370| 2520| 2670| 2820| 2970
Number of beams| 5| 10| 15| 20| 25| 30| 35| 40| 45| 50| 55| 60| 65| 70| 75| 80| 85| 90| 95| 100
Beam spacing 50 mm
Model| 155| 305| 455| 605| 755| 905| 1055| 1205| 1355| 1505| 1655| 1805| 1955| 2105| 2255| 2405| 2555| 2705| 2855| 3005
Measurement

height (mm)

| 100| 250| 400| 550| 700| 850| 1000| 1150| 1300| 1450| 1600| 1750| 1900| 2050| 2200| 2350| 2500| 2650| 2800| 2950
Number of beams| 3| 6| 9| 12| 15| 18| 21| 24| 27| 30| 33| 36| 39| 42| 45| 48| 51| 54| 57| 60
Beam spacing 75 mm
Model| 157| 307| 457| 607| 757| 907| 1057| 1207| 1357| 1507| 1657| 1807| 1957| 2107| 2257| 2407| 2557| 2707| 2857| 3007
Measurement

height (mm)

| 75| 225| 375| 525| 675| 825| 975| 1125| 1275| 1425| 1575| 1725| 1875| 2025| 2175| 2325| 2475| 2625| 2775| 2925
Number of beams| 2| 4| 6| 8| 10| 12| 14| 16| 18| 20| 22| 24| 26| 28| 30| 32| 34| 36| 38| 40

| 150| 300| 450| 600| 750| 900| 1050| 1200| 1350| 1500| 1650| 1800| 1950| 2100| 2250| 2400| 2550| 2700| 2850| 3000
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Dimension A| 213| 363| 513| 663| 813| 963| 1113| 1263| 1413| 1563| 1713| 1863| 2013| 2163| 2313| 2463| 2613| 2763| 2913| 3063
Dimension A (step 5mm)| 223| 373| 523| 673| 823| 973| 1123| 1273| 1423| 1573| –| –| –| –| –| –| –| –| –| –
Dimension B (step 5mm)| 64,5| 64,5| 64,5| 64,5| 64,5| 64,5| 64,5| 64,5| 64,5| 64,5| –| –| –| –| –| –| –| –| –| –
Dimension B (step 10mm, 20mm, 30mm)| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5| 61,5
Dimension B (step 25mm, 50mm, 75mm)| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69
Dimension C| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29| 29
Dimension D (step 5mm)| 13| 13| 13| 13| 13| 13| 13| 13| 13| 13| –| –| –| –| –| –| –| –| –| –
Dimension D (step 10mm)| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11| 11
Dimension D (step 20mm)| 11| 21| 11| 21| 11| 21| 11| 21| 11| 21| 11| 21| 11| 21| 11| 21| 11| 21| 11| 21
Dimension D (step 25mm)| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19| 19
Dimension D (step 30mm)| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31| 31
Dimension D (step 50mm)| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44| 44
Dimension D (step 75mm)| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69| 69
Mounting| 2 LE TYPE brackets with 2 inserts| 3 LE TYPE brackets with 2 inserts

CONFIGURATION SOFTWARE

**Using the ReeR MICRONCONFIGURATOR program

**

The Micron is provided with a connector on the receiver (see the connections section) for connection to a PC via USB link.
The function programming system (ReeR MICRONCONFIGURATOR) can be used to configure the Micron by setting the conditions for activating the outputs (these can also be combined by using the NULL/AND/OR operators). The following conditions can be selected:

• FBO First beam obstructed
• LBO Last beam obstructed
• CBO Central beam obstructed *
• NBO Number of beams obstructed
• NCBO Maximum number of consecutive beams obstructed *
• BNO Beam n obstructed
• If more than one zone is obstructed, the data refer to the zone with the highest number of obstructed beams.

A graphic interface can also be displayed for real-time monitoring of light curtain conditions. The following figures illustrate some screen pages of the ReeR Micron Configurator program which can be used to configure the Micron’s operating logic.

Preliminary Operations

Insert the MICRONCONFIGURATOR CD-ROM in the computer and follow the software installation instructions. To launch Micron Configurator, double-click the icon created on the desktop.

• LIGHT CURTAIN MODEL AND DATA
• Micron
  INITIAL CONFIGURATION (1)

Figure 10

Even if the light curtain is not connected you can still fill in the configuration fields and save the configuration on the PC, using the icon. You will be able to retrieve the previously saved configuration later, by clicking .

Connecting/disconnecting the light curtain
The “Barrier characteristics” panel in the top left corner is filled in automatically a few seconds after establishing the USB connection.

• Click (upload) to send the configuration to the Micron: at the end of this procedure the light curtain will automatically restart using the new configuration.
• Click (download) to read the configuration on the Micron; the program will display the data relating to the retrieved configuration.

Initial configuration

Sync configuration:
TX-RX synchronization can be programmed as follows:

SYNC VIA CABLE| Connect the SYNC signals of the emitter and the receiver.
---|---
OPTICAL SYNC| Sync the devices using the last beam of the light curtain.

• With optical synchronization, the uppermost beam must never be obstructed otherwise the measurement function will be interrupted.
• With cable synchronization, digital output 2 cannot be used.
• To switch from cable to optical synchronization, the emitter must be switched off and then restarted.

Receiver sensitivity configuration (only models 25mm, 50mm, 75mm, 10mm H, 30mm H):
The receiver’s sensitivity can be adjusted depending on its distance from the emitter.

With reduced sensitivity it is advisable to select the low range on the emitter.

Orientation configuration:
Beam numbering can be configured according to the orientation of the light curtain:

With optical synchronization light curtain orientation must be normal.

Scan cycle configuration:
The number of cycles used to perform the measurement can be configured:

1| Single cycle: fast but inaccurate measurement sensitive to light disturbance
---|---
2| two cycles: measurement with good speed-precision balance
3| three cycles: accurate measurement, insensitive to light disturbance but slower

Measurement time depends on the number of programmed cycles according to the formula:
(0,07ms number of beams + 500 us)n ms
(n configurable 1÷3 based on the scan cycles configured).

• INPUT PIN CONFIGURATION (2)

Input pin configuration

The input pin can be configured as follows:

• No function (disabled).
• Trigger function: this can be used to enable analog and digital outputs, stand-by and start/stop measurements. In this mode the minimum internal trigger time can be set to between 0 and 250 ms.(The BLUE LED lights up to indicate that the input is active).
• Teach-in function The pin can be used to teach the light curtain the pattern of an object using the following procedure:
  | ACTION| BLUE LED
  ---|---|---
  1| No pattern| Blue LED blinks three times
  2| Connect the input pin to 24 VDC| Blue LED blinks continuously
  3| Enter the object to be recognized in the light curtain’s measurement field| Blue LED blinks continuously
  4| Disconnect the input pin| Blue LED blinks twice followed by a light curtain auto-reset procedure
  5| Recognition active| Blue LED constantly on
  To delete the pattern of the object that has been saved, repeat the procedure described above with the measurement field empty.
  For recognition mode please refer to the relevant chapter.

The filter on the input pin can be set to between 3 and 250 ms (impulses shorter than the set value are not considered). This signal is active high but the logic can be inverted (active low) using the Inv. Input box.

TEACH IN mode

When the input pin is configured as Teach in the “Teach in mode” panel is active.
Teach in mode is used when the light curtain must recognize a specific object or pattern. There are three possible options:

| MODE| DESCRIPTION
---|---|---
1| Recognition of a moving object| The object to be recognized must be compact (with no transparent parts) and obstruct a certain number of adjacent beams. The light curtain recognizes the object saved previously in any position within the measurement field.
2| Recognition of a fixed object (pattern)| The object to be recognized can be of any shape, it need not be continuous and may have transparent parts.
The light curtain only recognizes the object if it obstructs the same position (in the measurement field) as when it was saved.
3| Blanking| The object to be recognized can be of any shape, it need not be continuous and may have transparent parts.
In this case it will be parts of a machine (guards, arms, etc.) that obstruct part of the field of vision. The light curtain treats the object as non- existent and ignores it in the measurements.

• In cases 1 and 2, the blue LED blinks to indicate that the object has been recognized. Recognition generates an internal trigger logic signal which can thus be used to activate outputs, enable stand by, etc.
• It is possible to select a tolerance of 0 to 2 beams for recognition.
• With particularly fast-moving objects, the minimum length of the internal trigger signal can be set to between 0 and 250 ms.
• The light curtain is capable of saving 2 different patterns for modes 1 and 2.
• Click to delete previously saved patterns.

TEACH IN mode

Analog output configuration (AC/AV models)

ANALOG OUTPUT CONFIGURATION

Figure 13

It is possible to configure the conditions for activating each single output.
Use the “ENABLE” box to select the conditions for activating each analog output.

| MODE| DESCRIPTION
---|---|---
1| Output disabled| The output is not active and gives 0 V in AV models and 4 mA in AC models
2| Output always enabled| The output always gives the analog value for the measurement selected.
3| Upon trigger/recognition| CHOOSE BETWEEN:
a.| Enable| With input not active/object not recognized the output gives 0 V in AV models and 4 mA in AC models
With input active/object recognized the output continuously gives the analog value corresponding to the measurement detected.
b.| Stand by| With input not active/object not recognized the output continuously gives the analog value corresponding to the measurement detected.
With input active/object recognized the output keeps the last value given.

c.

|

Start/stop

| With input active/object recognized the light curtain starts a measurement session by saving the highest value of the selected measurement.
When input deactivated/object not recognized, the output gives the analog value corresponding to the maximum value detected for the selected measurement. This value stays on the output until the next Start/stop session.
d.| Switch measurement| With input not active/object not recognized the output continuously gives the analog value corresponding to the measurement selected in the Measurement 1 box.
With input active/object recognized the output continuously gives the analog
value corresponding to the measurement selected in the Measurement 2 box.

With Micron AC is possible to choose the current range for each output:

• 4-20mA
• 0-20mA

If the output current is 4-20mA, in case of anomaly, you can choose if the barrier should provide 0mA (default 4mA).
The following measurements can be selected to apply to the output:

• FBO First beam obstructed
• LBO Last beam obstructed
• CBO Central beam obstructed
• NBO Number of beams obstructed
• NCBO Maximum number of consecutive beams obstructed

AV light curtains output a voltage that is proportionate to the measurement performed according to the following formula:
Vo=((10V/number of beams)*measurement) + 2%

E.g.: with a 30-beam light curtain and an NBO measurement of 15, the Micron outputs:
Vo=((10V/30)*15) + 2%=5V + 2%

AC light curtains output a current that is proportionate to the measurement performed according to the following formula, based on the current range chosen:
4-20mA:
Io=(((16mA/number of beams)*measurement)+4mA) + 2%

E.g.: with a 26-beam light curtain and an LBO measurement of 13, the Micron outputs:
Io=(((16mA/26)*13)+4mA) + 2% =12mA + 2%

0-20mA:
Io=((20mA/number of beams)*measurement) + 2%

E.g.: with a 26-beam light curtain and an LBO measurement of 13, the Micron outputs:
Io=((20mA/26)*13) + 2% =10mA + 2%

Digital output configuration

Figure 14

The conditions for activating each digital output can be selected in the “ENABLE” panel.

| MODE| DESCRIPTION
---|---|---
1| Output disabled| The output is not active and gives 0 VDC
2| Output always enabled| The output is active and gives 0 VDC or 24 VDC depending on the set condition. (-> “Active Output Condition” panel)
3| Upon trigger/recognition| CHOOSE BETWEEN:

a.

| Enable|

• With input not active/object not recognized the output gives 0 VDC
• With input active/object recognized the output is active and gives 0 VDC or 24 VDC depending on the set condition

b.

| Stand by|

• With input not active/object not recognized the output gives 0 VDC or 24 VDC depending on the set condition
• With input active/object recognized the output keeps the last logic level given.

c.

| Start/stop|

• With input active/object recognized the light curtain starts a measurement session by saving whether (in this condition) the set condition occurs.
• When input deactivated/object not recognized, the digital output switches to 0 VDC or 24 VDC if the set condition occurred in the previous session. This output value is maintained until the next Start/stop session.

d.

| Switch condition|

• With input not active/object not recognized the digital output follows the condition set in the left-hand column (condition 1).
• With input active/object recognized the digital output follows the condition set in the right-hand column (condition 2).

c.

| Copy|

• The output copies the input status/object recognized:
• With input active/object recognized the digital output gives 24 VDC
• With input not active/object not recognized the output gives 0 VDC

With fast output switching, the minimum output time can be set to between 0 and 250 ms.

The CONDITION box

The “CONDIZIONE” box can be used to set the condition for switching the output to LL1 (24 VDC): First select operator 1 in the left-hand column.
The program offers a choice of the following conditions:

• FBO First beam obstructed
• LBO Last beam obstructed
• CBO Central beam obstructed
• NBO Number of beams obstructed
• NCBO Maximum number of consecutive beams obstructed
• BNO Beam n obstructed

Select the condition:

• =

• =

Select the value.
E.g.: 12

Example:
to switch the output to LL1 if the last obstructed beam is more than or equal to 12, select: LBO, >=, 12

Figure 15

Use the OR and AND operators to define more complex logic conditions and establish relationships between the conditions in the LH column to those in the RH column.
Example:
to switch the output to LL1 if the last obstructed beam is more than or equal to 12, and there are 5 obstructed beams, select: LBO, >=, 12 AND NBO, =, 5

Figure 16

RS485 output configuration (B models)

Figure 17

The conditions for activating RS485 serial data transmission can be selected in the “ENABLE” panel.
Enable

| MODE| DESCRIPTION
---|---|---
1| RS485 disabled| Data transmission not active
2| RS485 always enabled| Data transmission always active.
In the offline configuration, with “Status” enabled, Microcomb provides a box to enter the number of beams for the calculation of the Transmission Time.
When the number of beams is added, the ‘Transmission Time’ is updated in real- time.

3

| RS485 upon request| Data transmission only starts upon recognition of a character that is received. The character is user-definable. It is possible to send the request character encapsulated in a data packet described in protocol mode on the following pages.
4| RS485 upon beam status change| Data transmission is activated when the beam status changes.
5| Upon trigger/recognition| CHOOSE BETWEEN:
a.| Enable|

• With input not active/object not recognized data transmission is not active
• With input active/object recognized data transmission is always active

b.| Stand by|

• With input not active/object not recognized data transmission is always active
• With input active/object recognized data transmission repeats the last datum sent

c.

|

Start/stop

|

• With input active/object recognized the light curtain starts a measurement session by saving the highest value of the selected measurement.
• When input deactivated/object not recognized, data transmission gives the maximum value corresponding to the selected measurement once

d.

|

One shot

|

• With input not active/object not recognized data transmission is deactivated
• With input active/object recognized data transmission gives the selected measurement once

6| On Network| Up to 3 Micron B can be connected on Network -> Micron on Network

Inter-character delay: in the case of always active data transmission, the inter-character delay between one data packet and the next can be customized by changing the “INTERCHARACTER DELAY” parameter. The program checks that the selected inter-character delay is compatible with the data transmission parameters. An Inter-character delay of zero indicates that transmission of the next data packet will start as soon as the next measurement is available.

Micron on Network

Micron barrier can be connected on Network; the maximum number of barriers is 3.

• The first barrier will be programmed with node=0.
• The other barriers will have a node sequential and different from 0 numeration.
• The RS-485 outputs (pin 5 or 6) will be connected in parallel.
• The 0V connection must be common.
• No need of termination resistor.

Figure 18

Figure 19 – sequential data transmission on RS-485 outputs

Data transmission parameters

the beam status changes.
5| light curtain ID| This character identifies the light curtain so that several light curtains can be connected on the

same RS485 link.

6| Checksum| In data transmission mode Protocol adds a checksum byte to the data packet

Data to be sent

__

Status

| Status of all beams: 1 corresponds to beam clear, the first beam is represented by the MSB of the first byte. Bits with no corresponding beam are zero. The number of bytes transmitted is given by the number of beams/8 approximated by excess. E.g.: a 26-beam light curtain will send 26/8 = 3.25 -> 4 bytes in which of the last byte only the 2 most significant bits are valid.
16 bit| Provides (when selected) the measures in 16 bit (2 bytes) format

Data transmission mode

In “Comparator” mode the light curtain sends a number of bytes corresponding to the measurements selected in the “Data to be sent” section containing the current value of the measurements.
In “Protocol” mode the light curtain sends a data packet with the following format:

“Micron ID” is a 1-byte field. It contains the character selected in parameter 4 of the “Data transmission parameters” section. “Data Len” is a 1-byte field and contains the number of bytes corresponding to the measurements selected in the “Data to be sent” section.
The “Data” field consists of the number of bytes indicated by the previous Data Len field and contains the current value of the measurements selected in the “Data to be sent” section.

DATA FORMAT

NUMBER OF BEAMS| DATA FORMAT
< 255| 8 bit

255| 16 bit

“Checksum” is a 1-byte field and contains the complement to 1 of the sum of all the bytes in the message except itself. The Checksum field is only present if selected in the “Data transmission parameters” section.
In “Matron simulation” mode the barrier will send data simulating the METRON B in “Binary” mode.

In “Fieldbus” mode must be selected when the barrier is coupled with a Refer Fieldbus module.

Comparator mode

The following figure shows a scheme of the data packet sent by the light curtain in comparator mode.

Protocol mode

The following figure shows a scheme of the data packet sent by the light curtain in protocol mode.

Example of data packet in comparator mode

Example of data packet in protocol mode

Monitoring light curtain status

AV/AC models
Click “MONITOR” to open a graphic user interface that displays light curtain operation in real time. The following  information is given:

1. Model and data of the light curtain connected
2. Synchronization (optical or via cable)
3. Sensitivity
4. Orientation (normal or upturned)
5. Scan cycles
6. Graphic representation of the MICRON beams (in real time)
7. Graphic representation of cable synchronization (not displayed with optical synchronization)
8. Measurements performed (in real time)
9. Input status (in real time)
10.  Pattern present (in real time)
11. Object recognition (in real time)
12. Value of analog outputs (in real time)
13. Status of digital outputs (in real time)

Next time you click the program returns to the configuration screen page.

B models

Click “MONITOR” to open a graphic user interface that displays light curtain operation in real time. The following information is given:

1. Model and data of the light curtain connected
2. Synchronization (optical or via cable)
3. Sensitivity
4. Orientation (normal or upturned)
5. Scan cycles
6. Graphic representation of the MICRON beams (in real time)
7. Graphic representation of cable synchronization (not displayed with optical synchronization)
8. Data sent via the RS485 link (in real time). You may stop the flow of data, delete the contents of the window and copy the data to the Windows clipboard.
9. Data transmission time
10. RS-485 configuration
11. Measurements performed (in real time)
12. Input status (in real time)
13. Pattern present (in real time)
14. Object recognition (in real time)
15. Status of digital outputs (in real time)

Next time you click the program returns to the configuration screen page.

References

• ReeR - Industrial Safety Automation

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