You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today.

68PW1

3U OpenVPX PWM Servo Motor Drive

The 68PW1 is a 3U OpenVPX single-axis PWM servo motor drive that can be configured with closed loop feedback measurement options including Hall, Resolver/Synchro or Encoder. The PWM drive provides programmable PWM output drive (up to 65 V @ 10 A continuous) from a single +28 VDC input source. Ideally suited for rugged Mil-Aero applications, the 68PW1 delivers off-the-shelf solutions that accelerate deployment of SWaP-optimized systems in air, land and sea applications.

Features
  • 3U OpenVPX (ANSI/VITA 65) / Profiles Supported: MOD3-PAY-2U2U-16.2.16-1, SLT3-PAY-2U2U-14.2.17, Data plane: 1 x1 PCIe (default) Control plane: 1x 1000Base-KX, P1 VPX TE MULTIGIG RT 3
  • PWM/Drive: Motor types supported - 2-phase brushed 3-phase brushless (BLDC), 28 Vin (nominal) drive power, MIL-STD-704F (18-36 VDC) 24V to 65V programmable PWM output drive, 10 A maximum (to 650 W max.), Discrete drive-enable control pins, P2/P3 TE high-current blade connectors
  • Ancillary I/O: 4x ±10V A/D, 12-bit min. (16-bit avail.), 4x ±10V D/A, 12-bit min. (16-bit avail.), 1x RS-422/485 SDLC control option, 1x RS-232 (console/debug, front I/O), 1x GbE (10/100/1000BASE-T), (control or maintenance, front I/O)
  • Feedback/Control Options: Hall, Resolver/Synchro + AC Reference, Encoder
  • IPMC Support: VITA 46.11 Tier-2, basic, compatible (configured option)
  • Power Input: +12V, ±12V AUX, +3.3V AUX, ~10 W power dissipation (est./typ.), ~96% efficient PWM Drive
  • Operating Systems (host supported): Xilinx PetaLinux, Wind River® VxWorks®, DDC-I Deos™
  • Background Built-In-Test Continuous BIT (as applicable)
  • Modular & Programmable Architecture
  • Intelligent I/O library support (included)
  • Commercial or Rugged Applications
  • Operating Temperature: Rugged: -40º C to 85º C
  • Mechanical (ANSI/VITA 48): Conduction-cooled; 3U, 1.0" pitch, Weight: ~1.95 lbs.

Specifications
PWM Function Specifications
 PWM Amplifier Specifications  (Single channel, unless otherwise specified)(after a 5 second warm-up period)
 Power
(Amplifier switching supply)
 65 VDC ±5% maximum programmable, internally supplied
 Standard: Brushed Motor interface or Brushless (BLDC)
 Resolution/Loop Update Rate  12-bit (monotonic over temperature) / @ 115 kHz
 Output  10 A continuous (maximum)
 Short circuit protected. Thermal protection determines duration of peak current drive.
 Frequency  345 kHz
 Bandwidth  800 Hz (minimum) open loop minimum in current mode w/ user programmable loop control variables.
 Efficiency  96% (minimum, at 65 VDC / 5A)
 Quiescent Power  +12VDC at 900 mA with no motors connected
 +12VAUX at 45 mA
 -12VAUX at 25 mA
 +3.3VAUX at 350 mA
 NOTE: +5V NOT required.
 Master Drive Enable  A discrete input (normally open), opto-isolated from the motor supply, must receive a switch closure to permit operation (and cannot be overwritten).
 Shutdown Conditions
(@ 65 VDC nom.)
 RS-422 time-out, PWM card time-out (software watchdog), Drive Fault (bias loss), Supply Overvoltage (71.5 VDC), Supply Under-Voltage (58.5 VDC), Over-Temperature condition (110°C) Internal H-Bridge fault.
 Output Filtering  LC Flter added to all motor drive signals (EMI mitigation).
 Input Current Limit / Soft-Start  characteristics TBD
 Over-current Protection  Solid state circuit breaker 'detect and protect' - characteristics TBD
 Ancillary I/O Specifications  
 A/D  4-Ch. ±10V, 12-bit (minimum) 16-bit (available) resolution, ±0.25% linearity FSR
 D/A  4-Ch. ±10V, 12-bit (minimum) 16-bit (available) resolution, ±0.25% linearity FSR
 RS-422/485
Serial Communications
 1-Ch. programmable, up to 1.5 Mbps asynchronous or 10 Mbps synchronous (SDLC)
 Ethernet, Command and Control  1-Port 1000BASE-KX provided on rear VPX connectors
 1-Port 10/100/1000BASE-T provided on front debug/maintenance connector
 RS-232 Serial Debug/Console  1-Ch. RS-232, debug/console provided on front debug/maintenance connector
 Feedback, Outer-Loop  1-Ch. Hall, Resolver/Synchro or Encoder (configured options, contact factory)
 IPMC  VITA 46.11 Tier-2 basic, compatible (configured options, contact factory)
Block Diagram

(Click diagram to enlarge)

Documentation
1/15/2021 3:27:29 PM
Accelerate Your Time-to-Mission™ With COSA®

NAI’s Configurable Open Systems Architecture™ (COSA®) offers a choice of over 70 smart I/O, communication, and Ethernet switch functions, providing the highest packaging density and greatest flexibility of any multifunction I/O board in the industry. Preexisting, fully-tested functions can be combined quickly and easily in an unlimited number of ways. Each I/O function has dedicated processing, unburdening the system Single Board Computer (SBC) from unnecessary data management overhead.

Related COSA® Products
Can’t find what you’re looking for?

North Atlantic's resource center is where you will find information on warranty and repairs, details of our Product Lifecycle Management and Configuration Management programs – and much more.

Visit Resource Center