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.
| 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) |
(Click diagram to enlarge)
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.
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