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參數(shù)資料
| 型號： | PC-77DS1-8CR120-34 |
| 英文描述： | Converter |
| 中文描述： | 轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 172K |
| 代理商： | PC-77DS1-8CR120-34 |
Apex Signal,
A Division of NAI, Inc.
631.567.1100/631.567.1823(fax) 3-20-01 S 77 DS1 A001 REV A 1.2
170 Wilbur Place, Bohemia, NY, 11716,USA
www.naii.com
/ e-mail:sales@naii.com Code:OVGU1 Page 1 of 8
APEX Signal, A Division of NAI, Inc
.
PC-77DS1
EIGHT
(1.2 VA)
DIGITAL
to
SYNCHRO/RESOLVER CONVERTERS
4 TWO-SPEED or 8 SINGLE-SPEED or COMBINATION (PROGRAMMABLE)
16 BIT RESOLUTION; To .0083° ACCURACY;
ON-BOARD PROGRAMMABLE REFERENCE SUPPLY
SELF TEST
and
Programmable Rotation
FEATURES:
16-bit resolution
30 arc-seconds accuracy
360 Hz to 10 kHz operation
1.2 VA drive capability
2,4,6 or 8-channel versions available
Programmable 2-speed ratios (2 to 255) and angle rotation
Continuous background BIT testing with Reference and Signal loss detection
Power-On Self-Test (POST)
Outputs can be turned ON/OFF
Either internal or external
±
12 VDC supply
Optional on-board programmable reference supply
Watchdog timer and soft reset
Transformer isolated
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 eight separate transformer isolated Digital-to-
Synchro/Resolver converters with 1.2 VA drive, extensive diagnostics, signal & reference loss detection and optional 5
VA reference supply. Either one common or eight separate reference inputs can be specified. Each output can be
turned ON or OFF via the bus. Two-speed configuration and constant rotation that includes a start and a stop angle
can be programmed. Transformer isolation enables user to ground one of the outputs without affecting performance.
The optional on
board reference supply is field programmable for both voltage and frequency. A watchdog timer is
provided to monitor the processor. This model will drive passive loads such as CT's etc. Part Number, S/N, Date
Code, and Revision are located in permanent memory. The
±
12VDC is normally derived from the backplane, but
jumpers are supplied to permit the card to be powered from external supplies.
Major diagnostics are incorporated
to
offer
substantial improvements to system reliability because the user is alerted
(within 5 seconds) to channel malfunctions. This approach reduces bus traffic because the Status Registers do not
require constant polling. See Programming Instructions for further details.
The D2 Test
initiates automatic background BIT Testing that compares the output of each channel against the
commanded input to a test accuracy of 0.05
°
and monitors each Output and Reference. 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 this card and can be enabled or disabled via the bus.
The D3 Test
starts
a BIT Test
that generates and tests 72 different angles, to a testing accuracy of 0.05
°
. Results can
be read from Status Registers. External reference is required and testing requires no external programming, and can
be Initiated or terminated via the bus. CAUTION: Outputs must be ON and are therefore active during this test.
Check connected loads for possible interaction.
Power-On Self-Test (POST), if enabled, initiates the D3 Test upon turn-on and is enabled/disabled via the bus.
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