Datasheet> 器件分类 > 模拟混合信号IC> 转换器> VME-64SD1-16MSP4-04

文档预览

VME-64SD1-16MSP4-04: 产品描述Converter; 产品类别模拟混合信号IC 转换器; 文件大小262KB，共10页; 制造商North Atlantic Industries Inc

下载文档详细参数全文预览

VME-64SD1-16MSP4-04概述

Converter

VME-64SD1-16MSP4-04规格参数

参数名称	属性值
Objectid	102613615
包装说明	,
Reach Compliance Code	unknown
YTEOL	0

文档预览

下载PDF文档

全文
预览

APEX Signal, A Division of NAI, Inc.

VME-64SD1

SIXTEEN (16) SYNCHRO/RESOLVER-to-DIGITAL

TWO-SPEED or SINGLE-SPEED or COMBINATION ( PROGRAMMABLE)

ON-BOARD PROGRAMMABLE REFERENCE SUPPLY

TO COMMERCIAL OR MILITARY SPECIFICATIONS

•

16-bit resolution (optional 24 bits combined)

±1 arc-minute

accuracy

Continuous background BIT testing with Reference and Signal loss detection

Self-calibrating. Does not require removal for calibration

50 Hz to 10 kHz operation

Tracking rate to 150 RPS

16, 12, 8, 4 and 2-channel versions available

Programmable 2-speed ratios: 2 to 255

Power-On Self-Test (POST)

Accurate Digital Velocity outputs

Optional programmable encoder (A & B) plus index outputs

Optional equivalent Hall Effect (A, B, C) commutation outputs

Optional on-board programmable reference supply

Watchdog timer and soft reset

Angle change alert

Transformer isolated

Synthetic reference compensates for

±60°

phase shift

Optional conduction cooling with wedgelocks

I/O via front panel, P2 or both

Latch feature

No adjustments or trimming required

Part number, S/N, Date Code and Revision in permanent memory

DESCRIPTION:

This high density intelligent DSP-based card incorporates up to sixteen (16) single-speed or eight (8) two-speed

transformer isolated Synchro/Resolver-to-Digital tracking converters with extensive diagnostics, digital velocity outputs,

angle change alert, and optional programmable reference supply.

Any combination of two-speed

and single-speed

channels can be field programmed to any ratio between 2 and 255. Each channel also produces differential (A & B)

incremental encoder outputs (with programmable resolution) and a zero degree marker pulse. Alternatively,

commutation outputs are available for 4, 6, or 8 pole brushless DC motors that eliminate the need for Hall Effect

sensors on the motor, thus eliminating processor time and reducing bus traffic. For 2-speed usage, ambiguity circuits

maintain monotonic outputs by compensating for misalignment between the Coarse and Fine Synchros. However, the

processor will set a flag when it senses that the maximum allowable misalignment of 90°/gear ratio is exceeded.

This card, even when large accelerations are encountered, never looses tracking, because it incorporates the unique

capability to automatically shift to higher bandwidths. The shifting is smooth and continuous with no glitches. Tracking

rates are only limited to bandwidth restrictions, up to 150 RPS, at 16-bit resolution. The LATCH feature permits the

user to read all channels at the same time. Reading will unlatch that channel. The angle alert monitors each channel

for the programmed angle difference and sets an interrupt as soon as that threshold is reached. Thus, no polling of

the angle registers is required until an angle has reached the specified difference. The use of Type II servo loop

processing techniques enables tracking, at full accuracy, up to the specified rate. A step input will not cause any

hang-up condition. Intermediate transparent latches, on all angle and velocity outputs, assure that valid data is always

available without interrupts or waiting time. Our synthetic reference compensates for

±60°

phase shifts, thus

eliminating the need for individual compensation networks. Each channel can be specified for a different voltage or

frequency. A watchdog timer is provided to monitor the processor. Part number, S/N, Date Code and Revision are

stored in permanent memory.

This board can operate over a "C" or "M" operating temperature range (see part number). The "C" version (0°C to

+70°C) uses standard high quality commercial semiconductors. The "M" version (-55°C to +85°C), used for severe

environmental conditions, uses high quality extended temperature semiconductors. Conduction cooling, using a

thermal plane and wedge locks, can be specified in the part number.

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

Page 1 of 9

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:

16 bits (up to 24 bits optional for two-speed configuration)

Accuracy:

±1 arc-minute for single speed inputs

±1 arc-minute divided by the gear ratio for two-speed inputs

VME Data transfer:

Data transfers within 200 ns.

Tracking Rate:

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:

Synchro or Resolver, (see part number)

Gear ratio:

Each channel pair is programmable from 2 to 255

Input voltage:

Resolver: 2-28 V

L-L

Autoranging, 90 V

L-L ;

Synchro: 11.8 V

L-L ,

90 V

L-L

Resolver and Synchro are Transformer isolated

Input Impedance:

40 kΩ min. up to 28 V

L-L

, 100 kΩ min. at 90 V

L-L

Reference:

2-28 Vrms, Autoranging or 115 Vrms. Transformer isolated.

Reference Zin

100 kΩ min.

Frequency:

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).

Commutation outputs:

Equivalent to the A, B, C outputs from Hall Effect Sensors for 4, 6 or 8 pole motors

Angle change alert:

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.

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:

One Interrupt capability is implemented. One of seven priority lines can be specified.

Power:

+ 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:

-55°C to +105°C.

Conformal coating:

Both sides of the board can be conformal coated (see part number).

Burn-in:

All “M” boards are burned in for 24 hours and cycled from -55°C to +85°C.

Size:

6U (9.2") height, 4HP (0.8") width. 233.4 mm x 20.3 mm x 160 mm deep

Weight:

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

Page 2 of 9

Power-ON

System Reset

, all parameters are restored to last saved setup and, if POST is enabled, a D3

Test is initiated.

Enter Active Channels:

Set the bit corresponding to each channel to be monitored during BIT testing in the

Active Channel Register at 48h. “1”=active; “0”=not used. Omitting this step will produce false alarms, because

unused channels will set faults.

Save Setup:

The current setup can be saved by writing 5555h to the Save Register at 4Ah. This location will

automatically clear to 0000h when the save is completed (within 5 seconds). When save is elected, all parameters

are saved. However, any parameter can be changed at will. Saving is optional. If not saved, reenter parameters at

each power up.

To restore factory shipped parameters, write AAAAh to the Save Register at 4Ah, followed by System Reset. Note:

After a SAVE or RESTORE, poll 4Ah and do not perform any other operation until word is at "0".

Read:

For single-speed applications (Ratio=1), read individual channels: 1, 2, 3, 4 etc. For two-speed applications,

read only channels (2, 4, 6, 8, etc.) for the combined output. For resolution up to 24-bit, read Hi word, then Lo

word. Hi word, when read, latches Lo word. 24 bit resolution, along with carrier frequency etc., will determine how

many of the 16 channels are available…consult factory for specifics.

Latch:

All

channels may be latched by writing “1” to D1 of Latch Register at 14h. Reading channel will disengage

latch for that channel.

Ratio:

Enter the desired ratio, as a binary number, in the Ratio Register corresponding to the pair of channels to

be used for a two-speed channel. Example: Single speed = 1; 36:1 = 100100.

Two-Speed Lock-Loss:

When two Synchros are geared to each other, either electrically or mechanically, in

order to achieve higher accuracy, the misalignment of the Coarse and Fine Synchros must not exceed 90°/gear ratio

or the digital angle output may not be valid. Should this problem occur, with a given channel pair, the corresponding

bit in the Two-Speed Lock-Loss Register at FAh will be set to “0”.

Velocity Scale Factor:

To scale the Max Velocity word for 150 RPS set Velocity Scale Factor = 4095 in HEX

(max

velocity word of 7FFFh being max. CW rotation, and 8000h being max. CCW rotation.

Scaling effects only the Velocity output word and not the dynamic performance.

Ex: To get max. velocity word @ 150 rps: 4095(150/150) = 4095 (0FFFh) This is also the Factory setting.

To get max. velocity word @ 50 rps. 4095(150/50) = 12,285 (2FFDh)

To get max. velocity word @ 9.375rps. 4095(150/9.375) = 65,520 (FFF0h) This is also the lowest setting

Velocity Output:

Read Velocity Registers of each channel as a 2’s complement word, with 7FFFh being

maximum CW rotation, and 8000h being maximum CCW rotation.

When max. velocity is set to 150 RPS, an actual speed of 10 RPS CW would be read as 0888h.

When max. velocity is set to 150 RPS, an actual speed of 10 RPS CCW would be read as F778h.

When max. velocity is set to 50 RPS, an actual speed of 10 RPS CW would be read as 1999h.

When max. velocity is set to 50 RPS, an actual speed of 10 RPS CCW would be read as E667h.

To convert a velocity word (for example E667h) into RPS: If maximum velocity, set to 50 RPS, then

RPS = 50 x E667h / 32,768 = 50 x -6,553 / 32,768 = -10 RPS

Power-On Self-Test (POST):

Will initiate the D3 Test upon power-on, if POST is enabled and saved. Enable by

writing "1" to POST Register at F8h. Disable by writing "0" at F8h and then save setup.

D2 Test Enable:

Writing “1” to D2 of Test Register at 0Ch initiates automatic background BIT testing that checks

each channel every 5° to a test accuracy of 0.05° and monitors each Signal and Reference. An Interrupt (if

enabled) will be set to indicate an accuracy problem or Signal or Reference loss and the results are available in

Status Registers (Signal or Reference loss within 2 sec, accuracy within 45 sec). A “0” deactivates this test. The

testing is totally transparent to the user, requires no external programming, has no effect on the standard operation

of this card and can be enabled or disabled. Card will (every 30 seconds) write 55h at address 4Ch when D2 is

enabled. User can periodically clear to 0000h and then read 4Ch again, after 30 seconds, to verify that background

BIT testing is activated.

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

Page 5 of 9

VME-64SD1-16MSP4-04

VME-64SD1-16MSP4-04概述

VME-64SD1-16MSP4-04规格参数

文档预览

推荐资源