PCB Piezotronics 482C27 Installation And Operating Manual
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PCB Piezotronics 482C27 Installation And Operating Manual

Bridge/differential, icp/voltage sensor signal conditioner
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Model 482C27
Bridge/Differential, ICP®/Voltage Sensor Signal Conditioner
Installation and Operating Manual
For assistance with the operation of this product,
contact PCB Piezotronics, Inc.
Toll-free: 800-828-8840
24-hour SensorLine: 716-684-0001
Fax: 716-684-0987
E-mail: info@pcb.com
Web: www.pcb.com

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  • Page 1 Model 482C27 Bridge/Differential, ICP®/Voltage Sensor Signal Conditioner Installation and Operating Manual For assistance with the operation of this product, contact PCB Piezotronics, Inc. Toll-free: 800-828-8840 24-hour SensorLine: 716-684-0001 Fax: 716-684-0987 E-mail: info@pcb.com Web: www.pcb.com...
  • Page 2 Returning Equipment – Following the equipment to PCB Piezotronics for these procedures will insure that your repair. User servicing or repair is not returned materials are handled in the recommended and, if attempted, may most expedient manner.
  • Page 3 PCB Piezotronics, Inc. Warranty – All equipment and repair 3425 Walden Ave. services provided by PCB Piezotronics, Depew, NY 14043 USA Inc. are covered by a limited warranty Toll-free: (800) 828-8840 against defective...
  • Page 4 A front panel interface is also provided for standalone operation. 43265 Rev. B ECO-40715 PCB PIEZOTRONICS, INC. 3425 WALDEN AVENUE DEPEW, NY 14043-2495 PHONE 716-684-0001 FAX 716-684-0987 ® ICP is a registered trademark of PCB Group, Inc. KS398...

  • Page 5: Table Of Contents

    Table of Contents Table of Contents 1-0. INTRODUCTION AND SPECIFICATIONS 1-1. Introduction: Safety Considerations 1-2. Model 482C System Description ® 1-2.1 Model 482C ICP Input/Output Mode, All Models 1-3. Block Diagram Installation 1-4.1. Grounding Techniques 1-4.2 Quick Set-up Instructions 1-5. Operation: Standard AC Line 1-7.
  • Page 6 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C GENERAL OPERATION MANUAL 3-12 Bridge/Differential Sensor Connection 3-13 RS-232 & Ethernet connections 3-14 Non-Volatile Memory 3-15 Transducer Electronic Data Sheet (TEDS) Interface: 4-0. COMPUTER INTERFACE PROGRAMMING GUIDE 4-1. Introduction RS-232 4-3. RS-232 Host Set-Up 4-4. RS-232 Rear Panel Pinout Listing 4-5.
  • Page 7 RSE / NRSE Mode for 3 Wire Sensors Connection of Triaxial Sensors Appendix A: Differential MEMS Sensor Set Up Guide Figure 1 Typical Block Diagram of Model 482C27..........3 ® Figure 2 ICP Sensor Excitation................24 Figure 3 Input Fault Window Comparator with LED Indicator .......25 Figure 4 Input Amplifier Configuration.............25...

  • Page 8: Introduction And Specifications

    WARNING 2: This equipment is designed with user safety in mind; however, the protection provided by the equipment may be impaired if the equipment is used in a manner not specified by PCB Piezotronics, Inc. Caution 1: Cables can kill your equipment. High voltage Electro Static Discharge (ESD) can damage electrical devices.

  • Page 9: Model 482C System Description

    1-2. Model 482C System Description The model 482C27 is a four-channel, bench top signal conditioner that offers low noise operation and simplicity of use. Each channel is selectable between two input types: Bridge/MEMS or ICP®/Voltage. For the bridge inputs, this model offers up to 12 VDC unipolar or bipolar excitation voltage for use with differential, single-ended, MEMS and bridge sensors like load cells and reaction torque sensors.

  • Page 10: Block Diagram

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 1-3. Block Diagram +Vexc AC/DC +sense coupling +sig Gain x1, x10 Gain x1, x5 Input filter order -sig -Vexc -sense Continuous Gain Bridge 0.1 – 200x Select ICP/Voltage Input filter Output filter...

  • Page 11: Quick Set-Up Instructions

    1-4.2 Quick Set-up Instructions 1-4.2a Front Panel Introduction The following illustration shows the front panel module as it appears on the Model 482C27. PCB 482C27 FW VER 1.0 This button is used to scroll DOWN through the options in the menus.
  • Page 12 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL GAIN SENS INPT FSOT FSIN FLTi The submenu will appear. Choose the channel you wish to change by using the up ↑ or down ↓ arrows. Once that is done use the left / right ←→ button to move the cursor over to the INPT column. To change the INPT, use either the up ↑...

  • Page 13: Operation: Standard Ac Line

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Channel Gain 001.0 Example: To set the gain of Channel 2 to x10 The flashing cursor appears over the channel selection. Choose the channel you wish to change by using the up↑ or ↓...

  • Page 14: Maintenance And Repair

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 1-7. Maintenance and Repair It is not recommended that the customer attempt repair of the Model 482C in the field. Should trouble occur, contact the factory for assistance. If the unit becomes dusty and dirty, it may be wiped off with a soft cloth.

  • Page 15: Front Panel Module Control

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 2-0. FRONT PANEL MODULE CONTROL 2-1. Introduction The Model 482C is equipped with the capability of controlling functions through the front panel module. This module consists of a display and five (5) push buttons. The display shows various menus in which all of the available options are given.

  • Page 16: Submenu Format And Command Selections

    Gain = (FSO *1000) / (FSI*SENS). Gain Limits: The 482C27 has different gain limits based on the input type. ICP & Voltage input modes have a maximum gain of 200. Bridge/Differential input settings have a maximum gain of 2000. Setting the Gain: To enter the submenu for the variable gain option, place the cursor over the word “GAIN”...
  • Page 17 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL GAIN SENS INPT FSOT FSIN FLTi By pressing the ENTER button, the submenu for changing the gain of any channel appears on the display. The submenu pertaining to the “Gain” selection appears as:...
  • Page 18 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 2) Sensitivity Value Entering a Sensitivity value will cause the gain of the unit to be changed based on the equation shown above. Sensitivity is set in the same way that the incremental Gain value is set, using the left/right ←→ arrow key to move the flashing cursor over any digit in the SENS column to select an appropriate value As with all setting changes, the actual gain internal to the unit is changed when the ‘ENTER’...
  • Page 19 10.0 5) INPT: The 482C27 allows the user to switch between ICP®, voltage, Full Bridge, Half Bridge, Quarter Bridge, Referenced Single-Ended (RSE) or Non Referenced Single-Ended (NRSE) mode. The factory default for all channels is ICP®. To change the mode select the INPT option from the main menu using the left / right ←→ arrow keys until the cursor is over the INPT option, and then press the Enter button.
  • Page 20 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 6) Input Filter option: Each channel’s Input filter setting can be set independently of the other channels. To change the Input Filter setting from the main menu, use the left / right ←→ arrow keys until the cursor is over the FLTi option, and then press the Enter button.
  • Page 21 02 mA The 482C27 will turn off the current excitation signal if the unit is not in ICP input mode and will not allow it to be set while unless it is in ICP mode. If a channel is selected from the Iexc menu that is inappropriate then NA will appear as shown below in place of the ICP current settings.
  • Page 22 10.0 The 482C27 will turn off the voltage excitation signal if the unit is in ICP or voltage input mode and will not allow it to be set while in those modes. If a channel is selected from the Vexc menu that is inappropriate then NA will appear as shown below in place of the voltage and polarity settings.
  • Page 23 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL The coupling options are AC or DC. In DC coupling mode the Auto Zero and Auto Balance functions become available. Auto Zero for all input types and Auto Balance for the Bridge /Differential input types.
  • Page 24 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Chan Autoscale NOTE- Auto-scale option should NOT be left on while measurements are being taken. It is strictly to be used during the setting of the gain, and then the option should be turned off.
  • Page 25 15) Bias Measurement: The 482C27 is capable of measuring the bias voltage present on each of its channels. By moving the cursor upon the “Bias” location, the display appears as follows:...
  • Page 26 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Using the ENTER button, the submenu appears as shown in the following diagram. Choose the channel you wish to change by using the up ↑ and down ↓ arrow keys. The output reading for the channel will be displayed automatically when the channel is selected.
  • Page 27 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Test CANCEL Use the up or down arrow keys to select ‘Execute’ or ‘Cancel’. Both options return control to the main menu. If ‘Execute’ is selected then the LED’s will blink 3 times if ‘Cancel’ is selected then no action is taken.
  • Page 28 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 21) Reset to Factory Default Settings: The reset option provides a mechanism to reset the unit to its factory default settings. To do this select the reset option from the menu by placing the cursor over the Reset option and hitting enter.
  • Page 29 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Display Opts Gain Following is what the screen will look like if the Display was set to show ‘Gain’ and channel 1 has a gain of 2000 and is in Full Bridge mode with the input filter ‘On’ with no Output Filter option installed. Similarly, channel 2 has a gain of 10 and is in ICP mode;...
  • Page 30 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Pressing the ENTER brings up a submenu that allows the operator to continue the test by selecting ‘Execute’ or cancel the function by selecting ‘Cancel’. Both options return control to the main menu. If ‘Execute’ is selected then all LEDs on the front panel will flash three times.

  • Page 31: Reference

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Reference 3-0. THEORY OF OPERATION 3-1. Sensor Excitation ® refers to a low output impedance voltage mode sensor combining an integrated circuit and a piezoelectric sensing element in a single housing to provide a voltage output. This sensor is powered by a +24 VDC power supply having a constant current, variable from 2 to 20 mA.

  • Page 32: Input Fault Detection

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 3-3. Input Fault Detection Model 482C monitors two input fault conditions, “short” and “open,” which indicate problems with sensor input and is displayed through the front panel LEDs. Either case implies that the sensor is NOT functioning properly. An input is shorted when it has a ground path for the sensor excitation and open when the sensor fails to draw the excitation.

  • Page 33: Programmable Gain

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 3-5.1 Programmable Gain With the two available programmable gain options, the user can adjust the gain as needed. Adjustable gain with three discrete settings (x1, x10, x100) or incremental gain (from 0.1 to 200) are available. The steps in the incremental gain option is 0.1.

  • Page 34: Overload Detection And Autorange

    3-7.1 Autorange To avoid overload, the Model 482C27 features autorange for automatic gain adjustment. This function utilizes the channel output A/D to monitor the input signal and adjust the channel’s gain until 0.8 of the Full Scale Output setting is observed.

  • Page 35: Filtering

    ±14.2 volts peak-to-peak, 7 volts peak for a sinusoidal signal. 3-10. Connector Configuration The base model 482C27 provides BNC inputs for ICP®-type sensors or voltage inputs and an 8 pin DIN connector for Bridge / Differential sensor inputs. The Output connector is a BNC.

  • Page 36: Bridge/Differential Sensor Connection

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 3-12 Bridge/Differential Sensor Connection The following diagram illustrates the proper connections for bridge or differential sensors. Note: If the Sense lines are not used they should be tied to the excitation lines.

  • Page 37: Computer Interface Programming Guide

    COMPUTER INTERFACE PROGRAMMING GUIDE 4-1. Introduction The RS-232 Interface enables the Model 482C27 to be remotely controlled. With this interface, the unit is able to become part of a fully automated system. RS-232 The RS-232 provides total control of the unit except for hardware RESET. The rest of the options described previously are computer-controllable.
  • Page 38 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL • Connect, either directly with a crossover CAT5 cable or through a hub, to a single unit. This unit is presumed to have a Unit ID of 1, • Set the IP address using an independent utility from Lantronix called DeviceInstaller .
  • Page 39 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL • Now you can use the assigned IP address to address the unit. Important Note: The communication protocol requires a unit id as part of the command header. The unit id is not the IP address.
  • Page 40 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL After the Login dialog the Settings pane will appear on the left as shown below, click on Connection. Make sure the parameters are set as shown. If you need to change the Port # do it here.
  • Page 41 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL When finished click OK and then activate the Apply Settings option...
  • Page 42 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL...
  • Page 43 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL...
  • Page 44 MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL...

  • Page 45: Model 482C Communication Guidelines

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 4-6. Model 482C Communication Guidelines 1) Data transfer from the host terminal to the unit must contain an ending delimiter of <CR><LF>. Example: <CR><LF> -Carriage Return and Line feed. (In ASCII, <CR> is 13; <LF> is 10.) 2) The number of characters for any command string, from the first character to the <CR>, may not exceed 255.

  • Page 46: Command Format

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL AZZR Channel AutoZero/Auto Balance LEDS Unit Front panel LED test function RSET Unit Restores factory default channel settings AUTR Channel Enable/disable auto-scaling function SAVS Unit Saves the current settings to NVRAM Command type definitions;...

  • Page 47: 4-10 Multiple Board Models

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL 4-10 Multiple Board Models Some 482x models (ex. 482M179) have multiple main boards installed which will appear as a contiguous set of channels, when in fact, physically, they are completely separate and operate somewhat independently. This presents some interesting communication challenges.

  • Page 48: Fsci

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Setting Response: 1:SENS:ok Query: The Sens query returns the channels transducer sensitivity Query Format: Unit#:Ch#:CMD? Response format: Unit#:Cmd:Ch#:= SENS; Query: 1:1:SENS? Response: 1:SENS:1= 6.0; Global Query: 1:0:SENS? Global Response: 1:SENS:1= 6.0;2= 10.0;3= 10.0;4= 10.0;...

  • Page 49: Inpt

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Global Response: 1:FSCO:1=10.0;2=10.0;3=10.0;4=10.0; INPT The INPT command sets the input mode for a given channel. The mode selection is sent as an integer value. All possible input modes for the 482/483 family are listed below. The bold items are valid input settings for the 482C27 and 483C28.

  • Page 50: Vexc

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Response format: Unit#:Cmd:Ch#:= <IEXC>; Query: 1:1:IEXC? Response: 1:IEXC:1=2; Global Query: 1:0: IEXC? Global Response: 1:IEXC:1=2;2=4;3=4;4=4; VEXC The VEXC command sets the voltage excitation level for bridge and differential mode inputs. The voltage excitation value is sent as a floating point number from 0.0 (off) to ±12.0 Volts. If the value is sent as a negative number then the minus (-) Bridge Excitation will track the plus (+) Bridge Excitation setting.

  • Page 51: Oflt

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL OFLT The OFLT command enables or disables the Output Filter. The Output Filter value is sent as an integer value of either 0 -Disable or 1-Enable. Setting: 2:1:OFLT= 1\r\n ( unit 2, channel 1, Output Filter Enabled )

  • Page 52: Swot

    Response: 1:SWOT:1=4; CALB The Calibration mode (CALB) command selects the calibration setting. For the 482C27 the options are OFF, Internal Shunt + or Internal Shunt -. For other models External Cal and Internal Cal using internally generated 100Hz or 1kHz sine wave signals are available.

  • Page 53: Rted

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL RTED The Read TEDS (RTED) command returns the TEDS information that is stored in the sensor or other, TEDS capable, in-line module attached to a selected channel. The 482x devices are 1451.4 compliant in that they will read the DS2430A Application Register Status to see if it indicates the 64 bit Application Register has data in it.

  • Page 54: Chrd

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Setting: N/A – Command is Read only Query: This command is a global command and will return all channel bias readings regardless of the channel id in the command. Query Format: Unit#:Ch#:RBIA? Response format: Unit#:Cmd:Ch#:=CH1 bias;…...

  • Page 55: Unit

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL For Unit bit map 0=no errors Channel Bit 0= Short input fault (0=Fault; 1 = no fault) Channel Bit 1= Open input fault (0=Fault; 1 = no fault) Channel Bit 2= Overload condition (0=Overload; 1 = no Overload)

  • Page 56: Unid

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL OPT_MISC_DINTG 0x20 Double Integration OPT_MISC_MUX 0x40 Mux /Switch-out OPT_MISC_DISPLAY 0x80 FP Display Miscellaneous Options 2 OPT_MISC2_OLDISO 0x01 Reserved OPT_MISC2_A2D 0x02 Digital Output available UNID The UNID command is used to set the units ID number. The Unit Id number is critical to remote communications since it indicates which commands a unit should accept and respond to.

  • Page 57: Leds

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL • -16 Zero Request, channel not in Bridge mode or ICP/volt - Illegal Setting • -17 Current Excitation Setting not allowed in Bridge input modes – Illegal Setting • -18 Voltage Excitation Setting not allowed in non-Bridge input modes – Illegal Setting LEDS The LEDS command is used to test the LED functionality of the front panel.

  • Page 58: Savs

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL The signals are checked internally using the onboard channel output A/D. Possible settings are: 0=off, 1-on, 2=immediate. The Immediate option causes the auto scale function to execute one time and then turns off the function automatically.

  • Page 59: Wiring Information

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL <Unit>:<Cmd String>:-5<CR> <LF> Unit Error. The function invoked by the command encountered an error or a query only command (ex. RBIA) was sent as a setting. <Unit>:<Cmd String>:-6<CR> <LF> Command Parameter Error. A channel setting parameter was found to be out of range.

  • Page 60: Half Bridge Mode

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL full bridge sensor V EXC + V EXC - optional shunt resistor (external) SENSE - SENSE + R SHUNT SIG - SIG + Figure 8 Alternate Connections for Full Bridge Type Sensors...

  • Page 61: Quarter Bridge Mode

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Quarter Bridge Mode V EXC + internal three quarter bridge completion SIG - V EXC + quarter optional V EXC - bridge shunt resistor sensor SENSE- (external) SENSE + R SHUNT SIG -...

  • Page 62: Connection Of Triaxial Sensors

    MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL Connection of Triaxial Sensors Many triaxial resistive bridge sensors have shared excitation lines, and other types of sensors may have shared power and ground lines. The V EXC, SENSE, or SIG GND lines for each channel may be tied together, however it is recommended that when doing so the excitation settings for each channel be identical for optimum performance.

  • Page 63: Appendix A: Differential Mems Sensor Set Up Guide

    Appendix A: Differential MEMS Sensor Set Up Guide for PCB Models 482C27 and 483C28 In order to setup the signal conditioner models 482C27 (4-channel) and 483C38 (8-channel) for use differential MEMS sensors (such as PCB 3741 and 3501 series accelerometers) apply the following settings: 1.
  • Page 64 Model Number Revision: D BRIDGE/DIFFERENTIAL, ICP®/VOLTAGE SENSOR SIGNAL CONDITIONER 482C27 ECN #: 39690 Performance ENGLISH OPTIONAL VERSIONS Channels Optional versions have identical specifications and accessories as listed for the standard model ICP®, Voltage, ICP®, Voltage, except where noted below. More than one option may be used.

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