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Related Manuals for Ametek DN VR-608 Series
Summary of Contents for Ametek DN VR-608 Series
- Page 1 DNx-VR-608 User Manual 8-Channel Variable Reluctance Sensor Interface for the PowerDNA Cube and RACK Series Chassis February 2024 PN Man-DNx-VR-608 © Copyright 1998-2024 United Electronic Industries, Inc. All rights reserved.
- Page 2 Support: Telephone: (508) 921-4600 Fax: (508) 668-2350 Also see the FAQs and online “Live Help” feature on our web site. Internet Support: uei.support@ametek.com Support: www.ueidaq.com Website: FTP Site: ftp://ftp.ueidaq.com Product Disclaimer: WARNING! DO NOT USE PRODUCTS SOLD BY UNITED ELECTRONIC INDUSTRIES, INC. AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS.
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Page 3: Table Of Contents
DNx-VR-608 Variable Reluctance Interface Table of Contents Table of Contents Chapter 1 Introduction ........... . . 1 Organization of this Manual . - Page 4 DNx-VR-608 Variable Reluctance Interface Table of Contents Create a Session ........... . 28 Resource Strings .
- Page 5 DNx-VR-608 Variable Reluctance Interface List of Figures List of Figures Chapter 1 Introduction ........... . . 1 Chapter 2 Functional Description .
- Page 6 DNx-VR-608 Variable Reluctance Interface List of Tables List of Tables Chapter 1 Introduction ........... . . 1 Specifications .......................7 Chapter 2 Functional Description .
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Page 7: Chapter 1 Introduction
DNx-VR-608 Variable Reluctance Interface Chapter 1 Introduction Chapter 1 Introduction This document outlines the feature-set of the DNx-VR-608 Variable Reluctance Interface boards and their use in a wide variety of motion and rotation monitoring applications. The following sections are provided in this chapter: •... -
Page 8: Manual Conventions
UEI’s website includes other user resources such as application notes, FAQs, tutorials, and videos. In particular, the glossary of terms may be helpful when reading through this manual: https://www.ueidaq.com/glossary Additional questions? Please email UEI Support at uei.support@ametek.com call 508-921-4600. February 2024 www.ueidaq.com © Copyright 2024 United Electronic Industries, Inc. -
Page 9: Before You Begin
DNx-VR-608 Variable Reluctance Interface Chapter 1 Introduction Before You Begin No Hot Swapping! Before plugging any I/O connector into the Cube or RACKtangle, be sure to remove power from all field wiring. Failure to do so may cause severe damage to the equipment. -
Page 10: Dnx-Vr-608 Features
DNx-VR-608 Variable Reluctance Interface Chapter 1 Introduction DNx-VR-608 DNx-VR-608 boards are 8-channel, variable reluctance (VR) sensor interface Features boards. The DNA/DNR/DNF-VR-608 boards are electronically identical and differ only in the hardware needed to mount the board in the selected chassis. The board is designed for use in a wide variety of motion and rotation monitoring applications. -
Page 11: Operating Modes
DNx-VR-608 Variable Reluctance Interface Chapter 1 Introduction 1.6.2 Operating The DNx-VR-608 supports the following per-channel modes: Modes • Timed Count/Frequency: counts the number of teeth detected during a specified time interval and returns velocity in teeth/sec or RPM. • N-Pulse: measures the time taken to detect N teeth and returns velocity in RPM. -
Page 12: Accessories
DNx-VR-608 Variable Reluctance Interface Chapter 1 Introduction 1.6.6 Accessories All field-wiring connections to the DNx-VR-608 are made through a standard 37-pin D connector, allowing OEM users to build custom cabling systems through off-the-shelf components. Users may also connect the DNx-VR-608 board to UEI’s DNA-STP-37 screw terminal panel via the DNA-CBL-37 cables. -
Page 13: Technical Specification
DNx-VR-608 Variable Reluctance Interface Chapter 1 Introduction Technical Table 1-1 summarizes the technical specifications for the DNx-VR-608 board. Specification All specifications are at 23 °C ±5 °C and apply to both Rev. 1 and Rev. 2 boards unless otherwise noted. Table 1-1 Specifications Number of VR channels Channel configuration... -
Page 14: Chapter 2 Functional Description
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description Chapter 2 Functional Description This chapter describes the device architecture, hardware, and functionality of the DNx-VR-608 Variable Reluctance Interface. The following sections are provided in this chapter: • VR Sensor Overview (Section 2.1) •... -
Page 15: Example Vr Sensor Signals
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description Toothed Wheel VR Analog Signal VR Digital Signal tooth detected reset ZC comparator Figure 2-2 Example VR Sensor Signals A VR interface board reads in the analog waveform and conditions it into a digital signal (Figure 2-2). -
Page 16: Index Tooth
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description 2.1.1 Index Tooth On some toothed wheels, one tooth is a different height or width than the others. This tooth is called the “index tooth” or “Z-tooth.” The Z-tooth changes the frequency and amplitude of the AC waveform as shown in Figure 2-3. For each Z-tooth type, the top row shows the physical teeth, the middle row shows the simplified AC waveform, and the bottom row shows the digital output signal. -
Page 17: Torque Measurement
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description 2.1.2 Torque Torque measurements require two toothed wheels on the same shaft: one toothed wheel is under torque and the other wheel is under zero torque. As the Measurement shaft twists under torque, the two wheels become slightly misaligned. The VR interface indirectly measures the degree offset by counting the time between when a tooth on the leading wheel passes the sensor and when a tooth on the lagging wheel passes the sensor. -
Page 18: Dnx-Vr-608 Device Architecture
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description DNx-VR-608 A simplified block diagram of the DNx-VR-608 Variable Reluctance Interface Device board is illustrated in Figure 2-5. Architecture Boot/Store Flash VR-608 Channel Pair 6/7 VR-608 Channel Pair 4/5 VR-608 Channel Pair 2/3 FPGA VR-608 Channel Pair 0/1 VR-608 Logic... -
Page 19: Zero Crossing Detection
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description • TTL-level digital pulse train - Some sensors, such as Hall Effect sensors, already output a conditioned 0-5 V square wave. • Revision 1: The digital sensor’s signal and return wires connect to a single VR-608 channel (e.g., In +/- of Channel 0);... -
Page 20: Logic Block Diagram For A Dual Vr Ic Channel
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description threshold to determine when cout should be dropped. The peak threshold allows the comparator to ignore zero crossings due to noise. The resulting digital output signal is illustrated in Figure 2-2. 2RX/1TX ARINC-429 transceiver protocol controllers (FPGA/DSP control/access Block 1) 2RX/1TX ARINC-429 transceiver protocol controllers (FPGA/DSP control/access Block 1) MAX 9926 Channel 0 Limiter... -
Page 21: Adc Module
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description Since the amplitude of the VR sensor signal varies with RPM, an adaptive peak threshold (APT_ONCHIP or APT_LOGIC) ensures the best performance over a wide range of speeds. The Dual VR IC can either use an internal adaptive algorithm (APT_ONCHIP) or accept an external peak threshold from the DAC (APT_LOGIC). -
Page 22: Dnx-Vr-608 Counter/Timer Module
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description The internal structure of a Counter/Timer module is shown in Figure 2-8. from Dual VR IC, ADC Module, DIn <rev. 2>, or Torque Module <rev. 2> Z-pulse detector to DOut CRR count (resettable) register Output control logic, creates output CR count register signal based on the current mode... -
Page 23: Counter/Timer Register Data
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description The following Counter/Timer modes are designed for dual VR sensors and must therefore be configured as a pair: • Torque: measures the time delay between pulses on the even and odd channels (Revision 2 only). •... - Page 24 DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description Timed and Z-Pulse Modes: position tooth count # of teeth CRL n – -1 velocity --------------------- - --------------------------------------------- - second CRH 66,000,000 where “n” is the total number of teeth on the wheel (including the Z-tooth) and “z” is the width of the Z-tooth in units of teeth.
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Page 25: Digital Outputs
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description 360 ------------------------------- ---------- - torque where “k” is a shaft constant with units of Newton-meters/degree (or pound-feet/ degree) and “n” is the total number of teeth on the wheel (including the Z-tooth). 2.2.5 Digital The VR-608 Logic chip controls four digital output lines which can be routed in... -
Page 26: Sync Out
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description • Dividers for Digital Outputs: Dividers can be applied to signals that are routed to the digital outputs. Each digital output can separately be configured with its own divider value. Available divisors are 2, 4, 8, and 16. -
Page 27: N-Pulse Mode
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description Note that if you experiment with these numbers, you will see that this measurement mode is well suited for applications with high input frequencies, that do not have to be updated quickly. For lower frequency inputs and/or for systems requiring quicker data updates, consider using N-pulse Mode. -
Page 28: Indicators And Connectors
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description Indicators Figure 2-9 shows the locations of the LEDs and connectors on the DNx-VR-608. The LED indicators are described in Table 2-3. Connectors DNR bus connector RDY LED STS LED DB-37 (female) 37-pin I/O connector Figure 2-9 Photo of DNR-VR-608 Board Table 2-3 DNx-VR-608 LED Indicators... -
Page 29: Pinout
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description Pinout Figure 2-11 illustrates the pinout of the DNx-VR-608 for Rev. 1 and Rev. 2 boards. Connections are made through a B-size 37-pin D-sub connector. The only functional difference between Rev. 1 and Rev. 2 pinouts is the new D/TTL In lines on Rev. -
Page 30: Loopback Test Wiring (Rev. 2)
DNx-VR-608 Variable Reluctance Interface Chapter 2 Functional Description VR Sensor Polarity On the DNx-VR-608, tooth detections correspond to negative slope zero crossings. If your VR sensor is wired for positive slope zero crossings (or if the wheel has holes instead of teeth), simply switch the In+ and In- wires. You can monitor both types of zero crossings by reading the ADC status. -
Page 31: Chapter 3 Powerdna Explorer
DNx-VR-608 Variable Reluctance Interface Chapter 3 PowerDNA Explorer Chapter 3 PowerDNA Explorer This chapter provides the following information about exploring the DNx-VR-608 with the PowerDNA Explorer application. • Introduction (Section 3.1) • VR-608 Configuration (Section 3.2) Introduction PowerDNA Explorer is a GUI-based application for communicating with your RACK or Cube system. -
Page 32: Vr-608 Configuration
DNx-VR-608 Variable Reluctance Interface Chapter 3 PowerDNA Explorer VR-608 As shown in Figure 3-1, the Configuration tab in PowerDNA Explorer allows Configuration entry of configuration parameters for all DNx-VR-608 channels. The Initialization tab is used for configuration of the state of the board at power-up. Figure 3-1 PowerDNA Explorer for DNx-VR-608 February 2024 www.ueidaq.com... -
Page 33: Chapter 4 Programming With The High-Level Api
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API Chapter 4 Programming with the High-level API This chapter provides the following information about programming the DNx-VR-608 using the UeiDaq Framework API: • About the High-level API (Section 4.1) •... -
Page 34: Create A Session
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API Each high-level example follows the same basic structure: 1. Create a session. 2. Configure the session for a particular device and subsystem. 3. Configure the timing. 4. Start the session. 5. -
Page 35: Configure Vr Channels
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API Configure VR The CreateVRChannel() method adds a VR channel to the session, sets the Channels channel mode, and returns a pointer to the channel. //Configure session to access VR channel 0. //Configure channel 0 for a Timed measurement. - Page 36 DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API Table 4-1 High-level API for VR Channel Configuration (Cont.) Method C/P/L Rev.1 Rev.2 Description Number of teeth on the wheel for RPM calculation SetNumberOfTeeth (1...3599). Also used as N in N-pulse mode. SetZToothSize Number of missing or fused teeth (0...3).
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Page 37: Configure Analog Vr Sensor
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API 4.5.1 Configure The following example shows a typical configuration for a VR sensor connected Analog VR to Channel 0. Sensor //Configure channel 0 to measure velocity every N teeth. CUeiVRChannel* vr0 = vrSession.CreateVRChannel( “pdna://192.168.100.2/Dev2/vr0”, UeiVRModeCounterNPulses);... -
Page 38: Configure Digital Input (Rev. 1)
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API 4.5.3 Configure You can read TTL-level digital pulses through the VR front-end by configuring the board for ADC-based zero crossing detection (i.e., either UeiZCModeFixed Digital Input or UeiZCModeLogic mode). The following example uses the Fixed zero (Rev. -
Page 39: Generate Simulated Vr Signal
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API 4.6.1 Generate You can configure a digital output channel for VR simulation on Revision 2 boards. The simulated signal is a square wave with a 50% duty cycle and Simulated VR frequency equal to rpm*ppr/60. -
Page 40: Route Source To Digital Output
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API 4.6.2 Route Source You can connect internal digital signal sources to digital outputs by setting the channel mode to Static. Supported sources are listed in Table 4-2. to Digital Output //Output alarm for CUeiVRChannel 4 and 5 on DOut2. -
Page 41: Digital Output Dividers
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API NOTE: An alarm can only be assigned to DOut on the same channel block, e.g., Alarm0_1 only works on DOut0. The other sources (TorqueX, DirectionX, ZToothX, ToothX) can connect to your choice of one or more DOuts. -
Page 42: Configure The Timing
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API Table 4-4 Sync Out Sources Supported by the CUeiVRSyncOutLine Class (Cont.) Sync Out Source Description UeiVRSyncOutLineTooth0 Set sync out line to high when any tooth is detected on channel n UeiVRSyncOutLineTooth7 UeiVRSyncOutLineZTooth0 Set sync out line to high when Z tooth is detected on... -
Page 43: Read Velocity, Position, Tooth Count
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API The CUeiVRReader object can read the following types of data: • Read()– converted VR sensor data, raw data, FIFO data, or ADC voltage data • ReadTorque()– torque sensor data •... -
Page 44: Read Torque (Rev. 2)
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API 4.10.2 Read Torque The ReadTorque() method returns the torque ratio from a channel configured for Torque Mode. See Section 4.5.2 for information on torque sensor (Rev. 2) configuration. The other channel in the pair, which is configured for N-Pulse Mode, is read using the Read() method described in Section 4.10.1. -
Page 45: Read Adc Diagnostics
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API 4.10.4 Read ADC You can read ADC voltage data for a channel pair. Data is returned for the even and odd channels simultaneously. For example, a channel 0 reader will return Diagnostics interleaved channel 0 and channel 1 data. -
Page 46: Cueivrreader Status Methods
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API Table 4-8 CUeiVRReader Status Methods Method Description Returns 32-bit status word showing alarm status on VR input lines for open circuit, stalled rotation, and overspeed alarms. See Table 4-9. ReadAlarmStatus() Note that status will be returned for all alarms regardless if the alarm has been configured. -
Page 47: Bit Assignments For Readalarmstatus()
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API The bit assignments for the 32-bit status word returned by ReadAlarmStatus() are listed in Table 4-9. Table 4-9 Bit Assignments for ReadAlarmStatus() Description 31-30 RSV - Reserved OSPD7 - overspeed detected on sensor 7 OSPD6 - overspeed detected on sensor 6 OPEN7 - Sensor 7 detected as open OPEN6 - Sensor 6 detected as open... -
Page 48: Stop The Session
DNx-VR-608 Variable Reluctance Interface Chapter 4 Programming with the High-level API 4.11 Stop the The session will automatically stop and clean itself up when the session object Session goes out of scope or when it is destroyed. To manually stop the session: //Stop the session. -
Page 49: Chapter 5 Programming With The Low-Level Api
DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API Chapter 5 Programming with the Low-level API This chapter provides the following information about programming the DNx-VR-608 using low-level API: • About the Low-level API (Section 5.1) • Example Code (Section 5.2) •... -
Page 50: Data Acquisition Modes
DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API Data The following data acquisition (DAQ) mode is available for transferring data Acquisition between the DNx-VR-608 and the low-level user application: Modes • Point-by-Point: Transfers one data point at a time to/from each configured channel of a single I/O board. -
Page 51: Configuration
DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API The tutorial in this section is intended as a supplement to the example code and the API reference manual. 5.4.1 Configuration To configure a Revision 1 board, populate DQ_VR608_CFG structure using the DqAdv608SetCfg() function. - Page 52 DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API Table 5-2 Low-level API Configuration Parameters (Cont.) Parameter C/P/L Rev.1 Rev.2 Description ov_speed Set limit for overspeed alarm in RPM Note that cfg_flags defines what other parts of the configuration structure are valid.
- Page 53 DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API 5.4.1.2 Torque Sensor The following example configures a dual VR torque sensor wired to Channels 2 Configuration and 3. For torque sensor configuration, always set the odd channel in a channel (Rev.
- Page 54 DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API This functionality is supported on both Rev. 1 and Rev. 2 boards, though we recommend Rev. 2 users route digital signals directly to the counter-timer modules as described in Section 5.4.1.4. 5.4.1.4 Digital Input On Revision 2 boards, TTL-level digital pulses on DIn can connect directly to the...
- Page 55 DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API 5.4.1.5 Alarm On Revision 2 boards, you can configure digital outputs as any combination of Configuration open circuit, stalled rotation, or overspeed alarms. An alarm can only be (Rev. 2) assigned to DOut on the same channel block, e.g., Alarm0 to DOut0.
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Page 56: Enable Channels
DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API 5.4.1.7 Sync Out On Revision 2 boards, use the sync_out member of the DQ_VR608_CFG_R2 (Rev. 2) structure to configure the output signals on the SYNC bus. The DQ_VR608_SYNC macro takes arguments for each of the sync out lines (D3...D0). -
Page 57: Read Inputs
DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API There is no benefit to enabling or disabling specific channels, so we recommend enabling all eight channels with 0xFF. 5.4.3 Read Inputs To read the latest input data, call: // Read input data from the channel list. -
Page 58: Read Status
DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API 5.4.3.2 Read For debugging purposes, it is possible to directly read ADC voltage and status Diagnostic information. ADC data is always returned for both channels in a pair. Actual data Data size returned is limited to network packet size, so multiple calls must be made from the host application to retrieve the entire FIFO buffer. -
Page 59: Dmap Channels
DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API Refer to SampleRTDMap608 for an example of how to set up a Data Map and read data from DNx-VR-608 input channels. The available DNx-VR-608 data channels are shown in Table 5-3. Table 5-3 DMap Channels Channel Description... - Page 60 DNx-VR-608 Variable Reluctance Interface Chapter 5 Programming with the Low-level API A DMap holds one data point per configured channel. One copy of the map is stored on the IOM and another is stored on the host. The IOM updates its version of the map at the DMAP_RATE specified during initialization, and the ADCs are clocked at this rate.
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Page 61: Appendix A Accessories
DNx-VR-608 Variable Reluctance Interface Appendix A Accessories Appendix A Accessories A.1 Cables DNA-CBL-37 This is a 37-conductor flat ribbon cable with 37-pin male D-sub connectors on both ends. The length is 3ft and the weight is 3.4 ounces or 98 grams. DNA-CBL-37S This is a 37-conductor round shielded cable with 37-pin male D-sub connectors on both ends.