Related Manuals for Acuity AccuRange AR2700
Summary of Contents for Acuity AccuRange AR2700
- Page 1 AccuRange AR2700™ Laser Sensor User’s Manual Rev 1.0.2 For use with AR2700™ Acuity A product line of Schmitt Industries, Inc. 2765 NW Nicolai St. Portland, OR 97210 www.acuitylaser.com...
- Page 2 Limited Use License Agreement CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE OPENING THE PACKAGE CONTAINING THE PRODUCT AND THE COMPUTER SOFTWARE LICENSED HEREUNDER. CONNECTING POWER TO THE MICROPROCESSOR CONTROL UNIT INDICATES YOUR ACCEPTANCE OF THESE TERMS AND CONDITIONS. IF YOU DO NOT AGREE WITH THE TERMS AND CONDITIONS, PROMPTLY RETURN THE UNIT WITH POWER SEAL INTACT TO THE DEALER FROM WHOM YOU PURCHASED THE PRODUCT WITHIN FIFTEEN DAYS FROM DATE OF PURCHASE AND YOUR PURCHASE PRICE WILL...
- Page 3 Procedures for Obtaining Warranty Service 1. Contact your Acuity distributor or call Schmitt Industries, Inc. to obtain a return merchandise authorization (RMA) number within the applicable warranty period. Schmitt Industries will not accept any returned product without an RMA number.
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Page 4: Table Of Contents
User’s Manual for the AR2700™ Series Laser Sensor Table of Contents Introduction ........................1 General Overview ....................... 2 Definition of Terms ..................... 2 Quick Start Instructions ....................3 1.3.1 Mounting ......................... 3 1.3.2 Serial Data Wires ....................3 1.3.3 Analog Output Signals .................... 3 1.3.4 Alarm Signal ...................... - Page 5 Sensor Unit ........................10 3.1.1 Sensor Cable, Wire Colors and Functions .............10 3.1.2 Power Supply (Red, Blue) ..................11 3.1.3 RS232 Serial Communications (Green, Gray) ............11 3.1.4 RS422 Serial Communications (Green, Pink, Yellow, Grey) ........12 3.1.5 Analog Output (Grey/Pink, Red/Blue) ..............12 3.1.6 Alarm Outputs Q1 and Q2 (Brown, Black) ..............13 3.1.7 Trigger Input and Output (Violet) ................13 Serial Interface Operation ....................15 Serial Hardware Interface ..................15...
- Page 6 Select Target (STx) ....................25 Trigger Input (TIx y) ....................25 Trigger Output (TOx) ....................26 Gain (GNx) ........................26 7.10 Time Calibration (TCx) ....................26 Serial Command Quick Reference ..................27 AR2700 User’s Manual...
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Page 7: Introduction
Introduction This section is a guide to getting started with the AR2700 and this manual. The AR2700 has a number of configurable parameters, but many applications can use the sensor in its default factory configuration. This manual contains information for both the AR2700 sensor unit and the AR2700 module. -
Page 8: General Overview
General Overview The AR2700 is a time-of-flight rangefinder that measures distance using an infrared (invisible) laser beam, a photodiode, and a microprocessor. The rangefinder works based on comparative phase measurement by emitting modulated high-frequency light which is diffusely reflected back from the target with a certain shift in phase. This return signal is compared with a reference signal. -
Page 9: Quick Start Instructions
1.3.2 Serial Data Wires The serial connection is required to set up a unit for operation. If not using the Acuity Connectivity kit which includes a serial cable, the customer must make their own D- sub 9 serial connector 1.3.2.1 RS232 serial... -
Page 10: Alarm Signal
230 feet (70 m) on regular surfaces with as little as 10% reflectivity and up to 885 feet (270 m) using a reflective target. Contact Acuity for these targets. The accuracy is generally specified with an absolute linearity of +/- 2.36 inches (60 mm) and a 1 sigma repeatability of +/- 0.98 inches (25 mm). -
Page 11: Mechanical Dimensions
Mechanical Dimensions 1.6.1 AR2700 sensor unit The following diagram shows the mechanical dimensions for the AR2700. The sensor unit has four M3 threaded holes on the bottom, three M3 threaded holes on the side, and two M3 threaded holes on the face for mounting to a bracket. The cable is for power and all communications (serial, analog, trigger, power, etc.). -
Page 12: Laser Safety
Laser Safety Installers of laser sensors should follow precautions set forth by ANSI Z136.1 Standard for the Safe Use of Lasers or by their local safety oversight organization. The AR2700 is a class 1 (eye safe) laser product as stipulated in IEC 60825-1/DIN EN 60825-1:2001-11 and a class 1 product under FDA 21CFR. -
Page 13: Installation And Checkout
Kit. This is a sealed connection box which contains terminal blocks for each wire lead. It also has an AC power supply and a 2m RS232 serial cable for connection to a PC. Without the Acuity connectivity kit, the user must connect a DB9 plug to the cable using the directions below. -
Page 14: Power On
Figure 2 Wiring configuration for 9-pin connector for RS232 serial communications RS422: An RS422 adapter must be used to connect the AR2700 to a PC. See the wire functionality chart in section 3 for details. For testing use a terminal emulation program such as HyperTerminal or TeraTerm. After naming the connection and choosing an icon, choose the COM port that the AR2700 is connected to. -
Page 15: Verifying Operation
Verifying Operation In default DT (distance tracking) mode, the AR2700 transmits approximately 10 samples per second (10,000 Hz with 1000 Averaged samples) at 112500 baud over the serial signals, and transmits measured distance over the current loop output at the same update rate. -
Page 16: Sensor Output Check
2.5.2 Sensor Output Check If the sensor output value is in error, check that the sensor and target are stationary and stable, that the target is at least 8 inches (0.2 m) from the sensor’s lens, and that the laser beam is hitting the target. -
Page 17: Power Supply (Red, Blue)
3.1.2 Power Supply (Red, Blue) The Blue wire is the Power Supply Common return, also named Ground. It carries the return current for the power supply. The Red wire is the Power Supply Input to the sensor. The sensor requires +10 VDC power at 125 mA. -
Page 18: Rs422 Serial Communications (Green, Pink, Yellow, Grey)
3.1.4 RS422 Serial Communications (Green, Pink, Yellow, Grey) RS422: RS422 is normally used for faster speeds and longer distances of communications. Two wires, usually twisted together, carry each differential (noise- immune) signal. There are no standard PC connections. A special adapter is required to connect to a PC using RS422. -
Page 19: Alarm Outputs Q1 And Q2 (Brown, Black)
3.1.6 Alarm Outputs Q1 and Q2 (Brown, Black) The Brown wire is the Alarm Output 1 (Q1). The Black wire is Alarm Output 2 (Q2). See Alarm Output Operation (section 6) for operation options and details. The Alarm Output is an open collector PNP transistor switch to the Ground for Power (Blue). - Page 20 Figure 6 – Wiring Diagram for Trigger Input Figure 7 – Wiring Diagram for Trigger Output AR2700 User’s Manual...
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Page 21: Serial Interface Operation
Serial Interface Operation Serial Hardware Interface This section refers to serial communication protocols for both the Sensor and Module versions of the AR2700. 4.1.1 Communications Protocol Serial port communication is required to configure the AR2700 for operation. The easiest way to communicate is by using a PC with an RS232 communication port and a terminal emulation program (Windows Hyperterminal or Teraterm™). -
Page 22: Identification (Id)
4.1.1.1 Syntax of Command Set The parameters are stored in a flash EEPROM. The individual parameters will be saved after a legitimate command is sent or until the parameter is changed by another input of command. Do not send continuous repeat transmissions of the same input commands (ie: at every power cycle). -
Page 23: Configuration Parameters Display (Pa)
4.1.4 Configuration Parameters Display (PA) This command will output a list of current parameter settings. PA <ENTER> measure frequency[MF]... 500(max 40000)Hz average value[SA]....measure window[MW]..... -290.000 290.000 0 trigger in[TI]......internal trigger trigger out[TO]....... rising edge distance offset[OF]....0.000 error mode[SE]...... digital out[Q1]....... -
Page 24: Serial Data Format (Sdx Y)
4.1.6 Serial Data Format (SDx y) The Serial Data output may be formatted to be decimal or binary. For each format, the data stream can be configured to include distance, signal quality, and temperature. In conjunction with the baud rate, the Serial Data Format determines the maximum output speed of measured values. - Page 25 4.1.6.1 Binary Format Distance: 2 bytes, MSB = bit 7 MSB of byte 1 is always 1. MSB of byte 0 is always 0. Data in each byte = bit 6 … bit 0 Coding: Two’s complement Conversion of binary value into decimal value: *1/100 Distance 1 : 100 = 3.38 m...
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Page 26: Terminator (Tex)
4.1.7 Terminator (TEx) This command sets the ASCII terminator of measured values. The default value is “0” for carriage return / line feed. The possible terminator options are as follows: x value ASCII Definition 0x0D 0x0A Carriage Return Line Feed 0x0D Carriage Return 0x0A... -
Page 27: Auto Start (Asx)
4.1.11 Auto Start (ASx) The Auto Start command allows you to program the sequence of settings the sensor will use upon start-up. The factory default setting is AS DT and this can be verified by typing AS <ENTER> or PA <ENTER>. The following parameters can be configured for Auto Start: ID, ID?, DM, DT, HW, PA, PR, MF, SA, MW, OF, SE, Q1, Q2, QA, BR, SD, TE and TP. -
Page 28: Setting The Range Beginning And End Points (Qax Y)
Setting the range beginning and end points (QAx y) The default setting for QA is x=0.000 and y=1.000 meters where x is the range beginning of 4mA and y is the range end of 20mA. ≠y The current value can be calculated according to the following formula: x>y, x<y, but x The resolution of x and y is 0.001 meters (float32). -
Page 29: Setting The Alarms (Q1W X Y Z Or Q2W X Y Z)
Setting the alarms (Q1w x y z or Q2w x y z) w = measuring range when the output switches x = length of range when the output state is held y = hysteresis z = logic behavior (low or high) Variable Description Specification... -
Page 30: Single Distance Measurement (Dm)
7.1.2 Single Distance Measurement (DM) The DM command is a software trigger for the AR2700 sensor to perform a single distance measurement and output the results to the serial and analog interfaces. The duration of the measurement depends on the preset Measurement Frequency (MF) and the Averaging Value (SA). -
Page 31: Distance Offset (Ofx)
Distance Offset (OFx) Factory default setting is 0.000. The Distance Offset allows the user to artificially add a value to the measured value. The Distance offset can be any number, positive or negative, with a resolution of 0.001 meters. For example: OF-10.100 <ENTER>... -
Page 32: Trigger Output (Tox)
The AR2700 has internal logic that allows the sensor to correct for measurement drifts due to certain internal and external causes such as a change in temperature. The TC command determines how frequently the sensor attempts to self-correct. Acuity recommends keeping this set at the default (1 second) in nearly all circumstances. -
Page 33: Serial Command Quick Reference
Serial Command Quick Reference Type <Enter> after each command. Factory AR2700 Configuration Data Settings (Serial) Default Serial Command Name Serial Code / Function Command Identification Displays sensor identification information Online help menu Displays serial command menu Distance Tracking Continuous measurements Single Distance Serial trigger for a single distance measurement Measurement...
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