This board incorporates major diagnostics that offer substantial improvements to system reliability, because the user is
alerted to channel malfunction. This approach reduces bus traffic, because the Status Registers need not be
constantly polled. Three different tests, one on-line and two off-line, can be selected:
The (D2) Test initiates automatic background BIT testing. Each channel is checked every 5° to a testing accuracy of
0.05° and each Signal and Reference is always monitored. Any failure triggers an Interrupt (if enabled) and the
results are available in Status Registers. The testing is totally transparent to the user, requires no external
programming, has no effect on the standard operation of the card, and can be enabled or disabled via the bus.
The (D3) Test initiates a BIT test that disconnects all channels from the outside world and connects them across an
internal stimulus that generates and tests 72 different angles to a test accuracy of 0.05°. Results can be read from
registers and external reference is not required. Any failure triggers an Interrupt (if enabled). The testing requires no
external programming, and can be initiated or stopped via the bus.
The (D0) Test is used to check the card and the VME interface. All channels are disconnected from the outside
world, allowing the user to write any number of input angles to the card and then to read the data from the interface.
External reference is not required.
Power-On Self-Test (POST): When enabled and saved, POST will initiate the D3 Test upon power-on.
SPECIFICATIONS:
Resolution:
Accuracy:
16 bits (up to 24 bits optional for two-speed configuration)
±1 arc-minute for single speed inputs
±1 arc-minute divided by the gear ratio for two-speed inputs
VME Data transfer:
Tracking Rate:
Data transfers within 200 ns.
18.5 RPS max. at 60 Hz; 150 RPS max. above 400 Hz. Referred to Fine input in a two-
speed configuration
Bandwidth:
Normal is 10 Hz at 60 Hz; 40 Hz at 400 Hz, and 100 Hz above 1 kHz. Can be readily
customized
Input format:
Gear ratio:
Synchro or Resolver, (see part number)
Each channel pair is programmable from 2 to 255
Input voltage:
Resolver: 2-28 VL-L Autoranging, 90 VL-L ; Synchro: 11.8 VL-L , 90 VL-L
Resolver and Synchro are Transformer isolated
Input Impedance:
Reference:
40 kΩ min. up to 28 VL-L , 100 kΩ min. at 90 VL-L
2-28 Vrms, Autoranging or 115 Vrms. Transformer isolated.
Reference Zin
Frequency:
100 kΩ min.
50 Hz to 10 kHz (see part number)
Encoder outputs:
Either 12,13,14,15, or 16-bit resolution, (field programmable) and Index marker. 12-bit
resolution is equivalent to 1,024 cycles (4,096 transitions) etc. Differential outputs. The
encoder resolution is fixed and does not change with speed. (Optional, see P/N).
Equivalent to the A, B, C outputs from Hall Effect Sensors for 4, 6 or 8 pole motors
Each channel can be set to a different angle differential. When that differential is
exceeded, an interrupt (if enabled) is triggered. Default: “Ch. Disabled”.
MSB=180°; Min. differential is 0.05°. Max differential that can be programmed is 179.9
degrees.
Commutation outputs:
Angle change alert:
Phase shift:
The synthetic reference circuit automatically compensates for phase shifts between the
transducer excitation and output up to ±60°.
Velocity, Digital:
16-bit resolution; Linearity: 0.1%. Scalable to 0.1°/sec resolution.
Wrap around Self Test: The three different powerful test methods are detailed in the Description section and
further described in the Programming Instructions.
Interrupts:
Power:
One Interrupt capability is implemented. One of seven priority lines can be specified.
+ 5 VDC: 0.350 A for 16 channels;
±12 VDC: 0.08 A without Reference; .600 A with 5 VA out.
Temperature, operating: "C" 0°C to +70°C; "M" -55°C to +85°C (see part number)
Storage temperature:
Conformal coating:
Burn-in:
Size:
Weight:
-55°C to +105°C.
Both sides of the board can be conformal coated (see part number).
All “M” boards are burned in for 24 hours and cycled from -55°C to +85°C.
6U (9.2") height, 4HP (0.8") width. 233.4 mm x 20.3 mm x 160 mm deep
22 oz.
Apex Signal, A Division of NAI, Inc.
170 Wilbur Place, Bohemia, NY, 11716,USA
631.567.1100/631.567.1823(fax)
www.naii.com / e-mail:sales@naii.com
2-05-01
Code:OVGU1
S 64 SD1 A001 REV A 1.4
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STM32H743技术深度剖析与应用案例探索
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