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Summary of Contents for MRC MRL3 15
- Page 1 Distance Laser Sensor MRL3 15 MRL3 30 MRL3H 15 MRL3H 30 Technical Reference Manual V3.0 Please check www.metrologyresource.com for the latest version...
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Page 2: Table Of Contents
Table of Contents 1 Introduction ..............................3 1.1 Product identification ............................ 4 1.2 Components ..............................4 1.3 Validity ................................4 1.4 Measurement range ............................. 5 1.5 Prevention of erroneous measurements ...................... 6 2 Device setup ..............................7 2.1 Connection ..............................8 2.2 Controlled mode ............................ - Page 3 9.6 Connector cover with 90° cable exit IP65 ....................40 10 Safety instructions ............................41 10.1 Use of the instrument ..........................41 10.2 Limits to use ............................. 41 10.3 Areas of responsibility ..........................42 10.4 Hazards in use ............................42 10.5 Laser classification ...........................
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Page 4: Introduction
ASCII protocol to control external display IP65 (protected against ingress of dust and water) 4 LEDs for status signaling Complementary configuration software available at MRC web site (www.metrologyresource.com) Optional: Internal heater for module operation down to -40°C Laser class II (<0.95mW) -
Page 5: Product Identification
Product identification The product is identified by the serial label on the top of the enclosure: Version Typical Accuracy 1.5mm 3.0mm Standard version MRL3 15 MRL3 30 Part No.: 500602 Part No.: 500601 Extended temperature range MRL3H 15 MRL3H 30 Part No.: 500612... -
Page 6: Measurement Range
ECHNICAL EFERENCE ANUAL Measurement range The MRL3 (H) is an optical instrument, whose operation is influenced by environmental conditions. Therefore, the measurement range achieved in the application can vary. The following conditions may influence the measurement range: Factors increasing range Factors reducing range Target surface Bright and reflecting surfaces such as the target... -
Page 7: Connection
ECHNICAL EFERENCE ANUAL The MRL3 (H) supports two types of operation modes: Controlled mode Automatic mode The first decision to be taken is the type of operation mode that will be used to transmit the distance measurement data. While the controlled mode provides maximum flexibility and accuracy, it is often not suitable for integration into existing PLCs or analog environments. -
Page 8: Controlled Mode
(RS422), strict Master-Slave communication must be implemented (MRL3 (H) operates as slave). Please consult the MRC Web page for application notes. Careful testing of the host software together with the devices prior to installation is strongly recommended. -
Page 9: Automatic Mode
ECHNICAL EFERENCE ANUAL Automatic mode The automatic mode is provided for host-less operation of the MRL3 (H). The analog and digitals outputs are updated according the configuration described below as soon as the unit is powered up. Analog Output The analog output is configurable and works with two ranges: 0..20mA –... -
Page 10: Display Mode
External Display with a serial interface. Since the MRL3 outputs this formatted string automatically on the serial interface after completing the measurement, the results can be displayed on an external display without the use of an additional controller. For a detailed description of this mode please contact MRC. 2.5 External Trigger... - Page 11 ECHNICAL EFERENCE ANUAL The MRL-3(H) includes the option of triggering measurements with an external switch or push button on Digital Input 1 (DI 1). Using the Digital Input DI 1 disables the Digital Output DO 1. The command to activate the external trigger option is described in 8.4 Digital Input on page 30. 2.5.1 Configuration After connecting the MRL-3(H), the following steps are necessary to activate the external trigger.
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Page 12: Installation
ECHNICAL EFERENCE ANUAL 3 Installation Mounting Three M4 threaded holes in the bottom of the MRL-2 (H) make it easy to mount the device. Always obey all applicable safety regulations and never use the device outside the specifications stated under 4 Technical data on page 15 Device wiring 3.2.1 Power Supply For trouble free operation use a separate power supply for the MRL-3 (H) - Page 13 ECHNICAL EFERENCE ANUAL 3.2.4 Controlled mode RS232 When using the RS232 interface only point-to-point communication is possible. Never connect multiple MRL3 (H)s on a RS232 serial line Figure 4: Point-to-point connection with RS232 RS422 It is possible to connect multiple devices on a single RS422 line. To ensure proper operation, strict Master- Slave communication must be used.
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Page 14: Alignment Of The Laser Beam
ECHNICAL EFERENCE ANUAL 3.2.5 Automatic mode The analog interface of the MRL3 (H) is isolated from the rest of the device. When using the analog interface, connect the analog ground (AGND). Make sure, that the total resistance in the analog path is smaller than 500 Figure 6: Connection of an instrument and a PLC Alignment of the laser beam Alignment of the laser beam is often difficult when the target is far away, as the laser spot is not visible. -
Page 15: Technical Data
ECHNICAL EFERENCE ANUAL Technical data Measuring accuracy The measuring accuracy corresponds to the ISO-recommendation ISO/R 1938-1971 with a statistical confidence level of 95.4% (i.e. ± 99.7% twice the standard deviation , refer to diagram on the right). The 95.4% typical measuring accuracy relates to average conditions for measuring. -
Page 16: Specifications
ECHNICAL EFERENCE ANUAL Specifications Typical measuring accuracy for MRL3 15 / MRL3 (H) 15 ± 1.5 mm @ 2σ MRL3 30 / MRL3 (H) 30 ± 3.0 mm @ 2σ Smallest unit displayed 0.1 mm Measuring range on natural surfaces 0.05 to approx 65 m... -
Page 17: Electrical Components
ECHNICAL EFERENCE ANUAL 5 Electrical components ID switch This switch is used to set the module ID and can be set from 0 to 9. Reset switch To reset the module to factory settings do the following: Switch OFF the power for the module Press the reset button and keep it pressed Switch on the power for the module Keep the reset button pressed until all LEDs on the module are illuminated... -
Page 18: Connector
ECHNICAL EFERENCE ANUAL e.g. The configured measurement range is 0...20m and the actual measured distance is 14m. This results in a measurement uncertainty of ± 0.2m (1% of 20m), which includes all parameters (temperature drift, sensor accuracy, linearity, target color etc.). The uncertainty decreases, if the ambient temperature is stable. -
Page 19: Physical Dimensions
ECHNICAL EFERENCE ANUAL Analog output (0/4..20mA) DO E Digital output for error signalization (Open Drain) DO 2 Digital output 2 (Open Drain) DO 1 Digital output 1 (Open Drain) Ground line Power DC +9V...+30V MRL3 +24...+30V MRL3 (H) (Heating option) 6 Physical dimensions All dimensions in mm Distance Laser Sensor... -
Page 20: Factory Settings
ECHNICAL EFERENCE ANUAL 7 Factory settings Operation Mode: Controlled Communication parameters Baud: 19200 Data bit: 7 Parity: Even Stop bit: 1 Analog outputs Min output: Range min: Range max: Error output: Module ID ID Number: Digital output 1 (DOUT1) 2m + 5mm 2005mm OFF: 2m - 5mm... -
Page 21: Command Set
ECHNICAL EFERENCE ANUAL Command set General 8.1.1 Command termination <trm> <trm> <cr><lf>. All commands for the MRL-2 (H) are ASCII based and terminated with 8.1.2 Module identification N Since the module can be addressed with the ID switch, the ID is represented in the commands by . -
Page 22: Operation Commands
ECHNICAL EFERENCE ANUAL Operation commands 8.2.1 STOP/CLEAR command (sNc) Stops the current execution and resets the status LEDs as well as the digital outputs. Command sNc<trm> Command gN?<trm> Return Successful gN@Ezzz Return Error Parameter Module ID Error Code 8.2.2 Distance measurement (sNg) Triggers simple measurement of distance. - Page 23 ECHNICAL EFERENCE ANUAL sNt<trm> Command gNt+xxxxxxxx<trm> Return Successful gN@Ezzz<trm> Return Error Parameter Module number (0..9) xxxxxxxxx emperature in 1/10°C zzz:Error code 8.2.5 Laser ON (sNo) Switches laser ON. Command sNo<trm> Command gN?<trm> Return Successful gN@Ezzz Return Error Parameter odule number (0..9) zzz: Error code 8.2.6 Laser OFF (sNp)
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Page 24: Configuration Commands
ECHNICAL EFERENCE ANUAL Module ID Parameter xxxxxxxxxxx Distance in 0.1mm Error Code 8.2.8 Tracking with buffering – Start (sNf) Triggers continuous measurement of the distance with internal buffering in the module (buffer for one measurement). The rate of measurements is defined with the sampling time. If the sampling time is set to zero, the measurements are executed as fast as possible. - Page 25 ECHNICAL EFERENCE ANUAL 8.3.1 Set communication parameter (sNbr) Sets the communication parameters for the serial interface. This command saves all configurations Flash Memory. The changed baud rate is and activated after the next ower ON. Bold = default parameters (first use or after reset) Command Command input: s Nbr+ y <trm>...
- Page 26 ECHNICAL EFERENCE ANUAL Module ID Parameter xxxxxxxx: Sampling time in 10 ms (if 0 -> max possible rate) zzz: Error code 8.3.3 Set/Get analog output min level (sNvm) This command sets the minimum analog output current level (0 or 4 mA). Set Command Get Command sNvm+x<trm>...
- Page 27 ECHNICAL EFERENCE ANUAL Set Command Get Command sNv+xxxxxxxx+yyyyyyyy<trm> Command gNv?<trm> Return Successful gN@Ezzz Return Error Module ID Parameter xxxxxxxx: Minimum distance in 1/10 mm corresponding to 0mA / 4mA yyyyyyyy: Maximum distance in 1/10 mm corresponding to 20mA zzz: Error code 8.3.6 Set digital output levels (sNn) Sets the distance levels at which the digital outputs are switched ON and OFF with a hysteresis.
- Page 28 ECHNICAL EFERENCE ANUAL Module number (0..9) Parameter Digital output port (1 or 2) xxxxxxxx Distance ON level in 1/10 mm for switching digital output ON yyyyyyyy : Distance OFF level in 1/10 mm for switching digital output OFF zzz : Error code 8.3.7 Save configuration parameters (sNs) This command saves all configuration parameters, which are set by the commands above.
- Page 29 ECHNICAL EFERENCE ANUAL gN@Ezzz <trm> Return Error Module number (0..9) Parameter xxxx : Module software version number yyyy : Interface software version number zzz : Error code 8.3.10 Get Serial Number (sNsn) Retrieves the serial number of the MRL3 (H). Command Command s Nsn<trm>...
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Page 30: Digital Input
ECHNICAL EFERENCE ANUAL Digital Input The following commands configure the terminal DO1. This port can also be used as digital input. For safety reasons, always use a resistor to protect the connection terminal. 8.4.1 Configure digital input (sNDi1) The digital output 1 of the MRL-2 can also be used as digital input. Its state can be read or trigger a configurable action. - Page 31 ECHNICAL EFERENCE ANUAL these commands carefully and only if you really understand what they do. 8.5.1 Get/Set user distance offset (sNuof) The user can set an individual overall offset correction for all distance measurement commands in this 'Special User Command' section. The standard distances measurement commands are not involved Set Command Get Command sNuof+xxxxxxxx<trm>...
- Page 32 ECHNICAL EFERENCE ANUAL This command takes the user distance offset into account Never use these commands if more than one module is connected to the RS232/RS422 line Command sNuh<trm> Command gNuh+xxxxxxxx<trm> Return Successful gN@Ezzz<trm> Return Error Parameter Module number (0..9) xxxxxxxx Distance in 0.1mm Error code...
- Page 33 ECHNICAL EFERENCE ANUAL Command sNuq<trm> Command gNuq+xxxxxxxx+c<trm> Return Successful gN@Ezzz+c<trm> Return Error Module number (0..9) Parameter xxxxxxxx Sampling time in 10ms (if 0 -> use max. possible . . sample rate) sNuq 0 = no new measurement since last command sNuq .
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Page 34: Error Codes
It takes too long to measure according distance Received signal too weak, distance < 200mm @E255 (Use different target and distances, if the problem persists, please contact MRC) Received signal too strong @E256 (Use different target and distances, if the problem persists, please contact MRC) -
Page 35: Accessories
ECHNICAL EFERENCE ANUAL Accessories Viewfinder The telescopic viewfinder can be used for easy alignment of the MRL3 (H) for long distances. Part Number Description 500100 Telescopic viewfinder Target plates The target plates provide a defined measuring target. Please use the different sides for the distances as stated below: Front color brown, for measuring distances from 20 m to 200 m Back color white, for measuring distances from 0.2 m to 30 m... -
Page 36: Cables
ECHNICAL EFERENCE ANUAL Cables Part Number Description PC-Connection cable: 500200 MRL3 (H) to - 9 pin D-Sub for PC (RS232) - 2 wires for power supply RS422-Connection cable: 500201 MRL3 (H) to - 5 wires for RS422 - 2 wires for power supply Connection cable for automatic mode: MRL3 (H) to - 2 wires for current output 500202... -
Page 37: Safety Instructions
10.3 Areas of responsibility Responsibilities of the manufacturer of the original equipment MRC MRC is responsible for supplying the product, including the Technical Reference Manual and original accessories, in a completely safe condition. Distance Laser Sensor... -
Page 38: Hazards In Use
ANUAL Responsibilities of the manufacturer of non-MRC accessories: The manufacturers of non-MRC accessories for the MRL3 (H) are responsible for developing, implementing and communicating safety concepts for their products. They are also responsible for the effectiveness of these safety concepts in combination with the MRC equipment. -
Page 39: Laser Classification
ECHNICAL EFERENCE ANUAL Precautions: Always ensure the visibility of MRL3 (H) labels at all times or add labels corresponding to the local safety regulation. CAUTION: When using the instrument for distance measurements or for positioning moving objects (e.g. cranes, building equipment, platforms, etc.) unforeseen events (e.g. breaking the laser beam) may cause erroneous measurements. -
Page 40: Electromagnetic Compatibility (Emc)
10.7 Producer Standards MRC hereby certifies that the product has been tested and complies with the specifications as stated in this' Technical Reference Manual'. The test equipment used is in compliance with national and international standards. -
Page 41: Disposal
In countries in which MRC has no subsidiaries, MRC delegates the duty for the disposal in compliance with 2002/96/EG«WEEE» to the local dealer or to the customer, if no dealer is present. -
Page 42: Labeling
ECHNICAL EFERENCE ANUAL 10.9 Labeling Figure 8: The label is applied on the top of the device Standard applied EN60825-1:2001 IEC60825-1:2001 Emitted wavelength 620-690nm Beam divergence 0.16 x 0.6 mrad Pulse duration 0.45x10 Max. radiant power* 0.95 mW 10.10 Maintenance The MRL3 (H) is almost maintenance free. -
Page 43: Service
Customers should obtain the latest relevant information before placing orders and should verify that such information is up to date and complete. All products are sold subject to MRC terms and conditions of sale supplied at the time of order acknowledgment.
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