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The Leader in Automated Test, Data
Acquisition, and Control
ISO9001:2008 Registered
Headquarters
839 Marshall Phelps Rd.
Windsor, CT 06095-2170
Phone: 860-298-9925
Massachusetts
257 Simarano Drive
Marlborough, MA 01752
Phone: 508-281-8288
New Jersey
10 Forest Avenue, Suite 120
Paramus, NJ 07652
Phone: 201-773-9115
SLSC 8-Channel
VDT/Resolver Simulation
Module
Installation Instructions and Reference Manual
Revision –
February 29, 2018
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Table of Contents
Summary of Contents for Bloomy Bloomy
- Page 1 The Leader in Automated Test, Data Acquisition, and Control ISO9001:2008 Registered Headquarters 839 Marshall Phelps Rd. Windsor, CT 06095-2170 Phone: 860-298-9925 Massachusetts 257 Simarano Drive Marlborough, MA 01752 Phone: 508-281-8288 New Jersey 10 Forest Avenue, Suite 120 Paramus, NJ 07652 Phone: 201-773-9115 SLSC 8-Channel VDT/Resolver Simulation...
- Page 2 Added 0.1 factor to basic transfer function. pre. 6/26/2017 Fixed RTI I/F pinout. pre. 8/7/2017 Fixed transformer ratios for -01 variant. – 2/29/2018 Added transformer ratios for -02 variant. Copyright ©2017 Bloomy Controls, Inc. All Rights Reserved The Bloomy Stamp and the word “Bloomy” are registered trademarks of Bloomy Controls, Inc. Other trademarks are property of their respective owners. Bloomy Controls, Inc. 839 Marshall Phelps Rd. Windsor, CT 06095 860-298-9925 www.bloomy.com February 29, 2018 www.bloomy.com...
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Page 3: Table Of Contents
Module Description ................................ 1 Features .................................... 1 Hardware Overview .............................. 2 Specifications ................................. 3 Software Overview ............................... 3 Theory of Operation .............................. 3 Transfer Function................................. 5 Routing Control ................................ 9 Manual Relay Control .............................. 9 Installation ..................................... 1 0 System Requirements .............................. 10 External Connections ............................... 10 February 29, 2018 www.bloomy.com Revision –... -
Page 4: Overview
1.0 Overview These operating instructions describe how to install and use the Bloomy 1200-00019 SLSC 8- Channel VDT/Resolver Simulation Module into a National Instruments Switch/Load/Signal Condi- tioning (SLSC) system. For information about installing, configuring, and programming the system, refer to the system’s documentation. Note: The safety guidelines and specifications in this document are specific to this module. The oth- er components in your system may not meet the same ratings and specifications. Refer to the doc- umentation for each component in your system to determine the ratings and specifications for the entire system. 1.1 Regulatory Refer to the product Declaration of Conformity for additional regulatory compliance information. To obtain product certifications and declarations of conformity for this product, see www.bloomy.com/support. -
Page 5: Hardware Overview
Side and front views of the module are shown below with connector designators. Pinouts for the connectors are shown in Appendix A. Right Side View: REVISION HISTORY DESCRIPTION J1 and J2 are user connections for the VDT/resolver simulations. XJ1 connects to the SLSC back- plane, while XJ2 and XJ3 connect to the rear transition interface and then to the rest of the system. XJ2 is the analog/digital I/O connector, and XJ3 is the system-wide fault/instrumentation bus. Front View: J1 and J2 are 44-pin high-density female D-shell connectors. The PWR and RDY indicators show the status of the module according to the table below. February 29, 2018 www.bloomy.com Revision –... -
Page 6: Specifications
40Ω±15% 1200-00019-02 DCR, output 41Ω±15% 1200-00019-00 52Ω±15% 1200-00019-01 52Ω±15% 1200-00019-02 2.4 Software Overview A LabVIEW VI is provided which converts engineering units (displacement) to voltages to drive the D/A converters. This VI also connects the calibration and shared excitation buses. Instructions for these VIs are included with the VI. The transfer functions of the VI and module is discussed further below. 2.5 Theory of Operation The module simulates VDTs and resolvers by using an analog four-quadrant multiplier under ex- ternal control to vary the amplitude and sign of two return outputs for each excitation input. Both the excitation and the returns are transformer coupled for isolation and to provide the unit under February 29, 2018 www.bloomy.com Revision –... - Page 7 EXC IN nal to be brought into the module through the rear fault/instrumentation connector, XJ3. For calibration of the transfer function, K and K are closed thus connecting a source of AC to CAL IN the excitation input of the channel. K is closed which connects a measurement device, such as CAL OUT a National Instruments PXI-based DMM, to the on-board calibration bus. K or K is then closed to complete the output signal path to the DMM. The control signals are then swept from -10V to +10V and the transfer function of the channel can be analyzed for calibration purposes. Each channel is calibrated in turn. If the excitation source is uncalibrated, K may also be connected during this process, though the CAL IN circuit to the DMM must be completed by a switch matrix elsewhere. While K and K are all in their open positions, K , and K may be opened in- CAL IN CAL OUT EXC IN dividually or as a group to simulate open-circuit faults. Note: K is not present on modules produced prior to 2017. EXC IN February 29, 2018 www.bloomy.com Revision –...
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Page 8: Transfer Function
S is the sensitivity of the VDT in units of or similar, and 9∗88 d is the displacement of the VDT from its null position in units of corresponding length or rotation. Note that because the displacement can be positive or negative that the return voltage can be in phase or inverted relative to the excitation. Because the module has the capability of providing inverted outputs, each channel can be used to simulate two 4-wire VDTs. VI Inputs The VI for the 4-wire simulation requires the following inputs: : displacement for each return in units of length (e.g., mm or in.) or rotation (°) : displacement error for each return in the same units as the displacement; default value of 0 S: the sensitivity of the VDT expressed in units of mV/V/length or mV/V/°. As long as the unit of displacement matches the unit of the sensitivity, the simulation will work for both linear as well as rotary VDTs. February 29, 2018 www.bloomy.com Revision –... - Page 9 ), and thus must be divided by 2 for use in the equations above. When in doubt, the sensitivity can be derived using the following equa- tion: �� − �� 8 @A �� = �� × �� %&' where are the outputs of one of the returns at opposite ends of the VDT’s displacement, is the excitation voltage, and D is the total stroke (end-to-end displacement) of the VDT. N is rarely available from the VDT data sheet but is necessary for this type of simulation. It may be derived using the following equation: �� + �� 8 @A �� = 2 × �� %&' where are the outputs of one of the returns at opposite ends of the VDT’s displacement, and February 29, 2018 www.bloomy.com Revision –...
- Page 10 × ���� × sin ( NΘ + Φ ) �� = �� "F × ���� × cos ( NΘ + Φ ) �� = �� "F "F where is the sine return, provided by the E1 return of a channel is the cosine return, provided by the E2 return of a channel is the excitation voltage, provided by the V input of a channel TR is the nominal transformation ratio N is the number of poles (or “speed”) of the device is the angle of the rotor, and is the phase shift of the resolver. The module does not simulate four-wire rotor resolvers. VI Inputs The VI for the static resolver simulation requires the following inputs: TR: the nominal transformation ratio February 29, 2018 www.bloomy.com Revision –...
- Page 11 Target VI: a reference to the target VI RPM command: a structure which performs one of the following actions: sets the target to a desired RPM commands the target to accelerate from the current RPM at an acceleration rate (in RPM/s) for a set length of time, or commands the target to accelerate from the current RPM to a target RPM in a set length of time. The VI outputs the current position and RPM of the simulation. The host VI maintains the connection to the target VI, so no user VI interaction is required. 2.6.4 Advanced Mode Advanced mode allows full control of each channel per the transfer function listed in Transfer Func- tion, above. In this mode, V and V are under direct user control. Other parameters are set by the VI control,1 control,2 based on the board configuration. February 29, 2018 www.bloomy.com Revision –...
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Page 12: Routing Control
CAL_CH_n_E2 CAL OUT. Connects external excitation of channel n to CAL IN, E1 of CAL_CH_n_E1_EXT channel n to CAL OUT. Connects external excitation of channel n to CAL IN, E1 of CAL_CH_n_E2_EXT channel n to CAL OUT. Connects excitation of channel n to the external excitation source. Route must be re- EXT_EXC_CH_n connected after a calibration operation. Opens channel n excitation re- lay. All other relays are unaf- OPEN_EXC_CH_n fected. Opens channel n E1 relay. All OPEN_E1_CH_n other relays are unaffected. Opens channel n E2 relay. All OPEN_E2_CH_n other relays are unaffected. 2.8 Manual Relay Control The VIs which are provided with the module provide direct control of the on-board relays through the SLSC API “Property” function. Caution! Improper use of the relays could lead to damage to the module, system or unit under test. February 29, 2018 www.bloomy.com Revision –... -
Page 13: Installation
3.0 Installation 3.1 System Requirements This module requires: • an open slot in a National Instruments SLSC-12001 chassis • a single-ended analog rear transition interface (RTI) module installed into the open slot • a National Instruments PXI or Compact RIO D/A converter (two D/As per simulation chan- nel) • a cable which mates the RTI to the D/A converters • LabVIEW 2015 or later. Note: Install the latest software drivers for this module before plugging the module into the target SLSC chassis. The latest version of the software may be obtained from www.bloomy.com/support. 3.2 External Connections The module is designed to be used with the National Instruments Mil/Aero HIL SLSC standard sys- tem of components such as the Bloomy ThroughPoint™ Interface Panel. As such, most connections can be made using the off-the-shelf D-shell cables which are part of this system. When necessary, connections to the module may be made using custom D-shell cables per the pinouts shown in Ap- pendix A. February 29, 2018 www.bloomy.com Revision –... - Page 14 28 Channel 7 E1–/S4 6 Channel 5 E2+/S1 14 Channel 7 E2+/S1 21 Channel 5 E2–/S3 29 Channel 7 E2–/S3 35 Channel 5 EXC+/R1 43 Channel 7 EXC+/R1 36 Channel 5 EXC–/R3 44 Channel 7 EXC–/R3 February 29, 2018 www.bloomy.com Revision –...
- Page 15 XJ3: Instrumentation/Fault Bus Connector: 8-position power connector, TE Connectivity P/N 5646958-2 Pin Function Pin Function A CAL OUT + E reserved B CAL OUT – F reserved C CAL IN G EXC IN + D CAL IN – H EXC IN – February 29, 2018 www.bloomy.com Revision –...
- Page 16 0001 0000 CH7_EXC_TO_CAL1 0010 0000 CH7_OUT1_TO_CAL2 0100 0000 CH7_OUT2_TO_CAL2 0x104 0000 0001 CAL1_ENABLE (Connects CAL1 to XJ3-CD) 0000 0010 CAL2_ENABLE (Connects CAL2 to XJ3-AB) Temperature #1 (low-order byte) 0x200 Temperature #1 (high-order byte) 0x201 Temperature #2 (low-order byte) 0x202 Temperature #2 (high-order byte) 0x203 0x300 0000 0001 DC_DC_ENABLE CPLD Version (low-order byte) 0x400 CPLD Version 0x401 CPLD Version 0x402 CPLD Version (high-order byte) 0x403 February 29, 2018 www.bloomy.com Revision –...
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