CPe4000 Series: Compact-PCI Express and PXIe Synchro - Resolver - LVDT I/O Cards
Features:
- TRUE TRANSFORMER COUPLED OUTPUTS
- ACCURACY +/-1 ARC MINUTE
- RESOLUTION 16 BITS, to 24 BITS MULTI-SPEED
- PROGRAMMABLE VELOCITY / ROTATE
- PROGRAMMABLE ACCELERATION
- TRUE WRAP-AROUND SELF TEST CONTINUOUS, @ POINT OF LOAD
- DESIGNED TO FACILITATE REDUNDANCY APPLICATIONS WRAP AROUND TEST CAN MONITOR SISTER CARD LOCATED IN A DIFFERENT LOCATION, OR WHATEVER CARD OR SYNCHRO ACTIVE ON THE OUTPUT LINES.
- OUTPUTS FACILITATE LARGE SIGNAL MISS-MATCH
- DRIVES +/-90 DEGREE PHASE SHIFTS WITHOUT HAVING TO PROGRAM ON-SITE
- EXTENSIVE BUILT-IN SELF-TEST (BIST).
- FULL EXTERNAL SYNCHRO AMPLIFIER SUPPORT: BIT REPORT, ENABLES, AND WRAP AROUND TESTING.
Description:
Computer Conversions’ CPe4000 Series are CompactPCI-Express (cPCIe) and PXI Express (PXIe) compliant: Synchro, Resolver, and LVDT/RVDT I/O Cards (predominantly output cards), with GEN1 and GEN 2 PCI Express interface, designed for accurate and reliable commercial, industrial and COTS-Mil. applications in test, simulation, motion control and shipboard data distribution. The CPe4000 Series drive up to 4 channels of Synchro, Resolver, 3-wire LVDT/RVDT outputs, or up to 8 channels of 2 wire LVDT/RVDT AC Sensor output sets.
Additionally up to 2 channels of Synchro, Resolver or LVDT inputs are available for applications requiring both input and output channels on a single card.
Extensive Built-In-Self-Test, WRAP-AROUND SELF-TEST, Velocity profiling and report:
The CPe4000 cards include extensive built-in self-test (BIST) including continuous true wrap-around self-test, reporting output status criteria and faults at the point of load in a comprehensive, non-invasive and Isolated fashion, that runs in the back-round automatically: output on/off status, thermal status, overload status, output large angle transient detect, loss of reference report, for each and all channels, and loss of signal report on input channels.
The wrap around feature allows accurate isolated feedback reporting of both position and real-time digital velocity, allowing the CPe4000 to perform comprehensive positioning and dynamic velocity profiles that may be integrally - affirmatively accomplished with ease.
Isolated Wrap-Around test is also accommodated for the feedback of external Synchro Amplifiers, Repeaters, Resolver Amplifiers and auxiliary 50/60Hz output transformers.
True Transformer Outputs:
The CPe4000 features true transformer outputs, that are well proven to provide an indispensable level of reliability, robustness, and unbridled ease of integration with assured compatibility, optimum impedance matching, accurate and repeatable performance; irrespective of the wiring, grounding
or lack of grounding, isolation or lack thereof, or sensitivity of the devices wired on the user end.
When driving synchro loads any 1 leg may be grounded, resolver loads any two legs of opposite coils may be grounded (sine/cosine), and any 1 side of each or any LVDT / RVDT coil(s).
These virtually indestructible outputs are fully protected: transient, over-load, and thermally protected, and short circuit protected. They are designed to meet the requirements of Air ARINC407, SAE AS20708, and Naval Ship-board power per MIL-STD-1399.
The type Transformer Outputs provided by the CPe4000 have been proven in thousands of Aircraft Simulation and Flight Simulator applications, Inertial Navigation Systems, Naval Shipboard data distribution systems, Radar, and Radar Drivers, and Naval Simulator applications, Gyro systems and Gyro Repeater upgrades, in addition to both industrial and commercial motion control related applications. The true transformer coupled outputs are well behaved, free of spurious oscillations, robust, with the inherent ability to accommodate large signal miss-match and phase shifts without damage.
Isolation:
All Transformers designed and manufactured to MIL-T-27. The reference inputs, signal outputs, wrap-around feedback, and external Synchro Booster Amplifier inputs (for inclusive wrap-around test) all feature: input to output, channel to channel and channel to ground independent isolation greater then 1500 Volts, and withstand high-pot of greater then 750 VDC. minimum.
Driving Phase Shifts (not power starved):
Because the CPe4000 outputs are not power limited (starved) to only a very small range of tolerable phase shift, they can drive varying rotor to stator phase shifts and phase shifted loads and cable distances, and perform equally well when driving users over large and varied temperature extremes without additional programming, they directly accommodate and drive rotor to stator phase-shifts (+/-90 degrees) without any need to custom tune and reprogram each channel as-is, as-installed, on-site.
External Synchro Booster Amplifier and 50/60Hz. Support:
All output channels are complimented with provisions accepting the outputs and interface to External Synchro Power Booster Amplifiers and Repeaters or 50/60Hz. Transformers that may be wired in and monitored as part of a inclusive and comprehensive isolated wrap-around test. The External Booster support is completely isolated including Booster BIT Feedback report, position feedback, and output enable/disable control.
Dynamic Rotate, Programmable: Position, Direction, Velocity, (and Acceleration):
The dynamic rotate feature allows the user to program a start position, a direction command CW/CCW (or FWD/RVSE) a programmable velocity and a continuous command verses a stop at position with report or return, run, stall, with or without a ramp made possible with the first and only of it’s kind Computer Conversions’ innovative programmable acceleration.
The Programmable acceleration controls the rate of achievable velocity from the current velocity (or zero if stationary) to the desired velocity in a tightly controlled rate of acceleration and / or deceleration respective of the velocity differential.
Don’t ignore the signal users BIT abilities and expectations when driving common synchro or resolver converters within the device under-test in ATE applications:
A particular uniquely un-expected and commonly un-anticipated need for the programmable acceleration is in applications whereby the signal user is wired to a device having an internal synchro, resolver or LVDT to digital "converter", many of these converters will indicate a BIT / fault output (or go into a fault mode) for any significant sudden acceleration or "step-input" experienced on it’s signal inputs.
A common criteria for most all of these signal users internal converters (and conversion technique) is to activate a BIT whenever it’s inputs yields a "step-input" of 100LSB’s or greater (0.55 degrees on a 16 bit converter) which only initially appears large, however paramount when you are forced to consider that with these converters; although they can track very good data at high appropriately controlled velocities, they are poor to accommodate any significant acceleration (or infinitely sudden excursions).
The user can elect to step the velocity in software and hope that they will achieve desired performance without activating the users BIT with a very small sample velocity per step in a chase, or simply use the programmable acceleration command to allow the CPe4000 ramp up in a tightly controlled acceleration limited manner.
