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參數(shù)資料
| 型號： | SDC-361-I-1 |
| 廠商： | DATA DEVICE CORP |
| 元件分類： | 位置變換器 |
| 英文描述： | SYNCHRO OR RESOLVER TO DIGITAL CONVERTER, DIP32 |
| 封裝： | 3.125 X 2.625 INCH, 0.820 INCH HEIGHT, PACKAGE-54/32 |
| 文件頁數(shù)： | 2/6頁 |
| 文件大小： | 102K |
| 代理商： | SDC-361-I-1 |
2
TABLE 1. SDC-361/362 SPECIFICATIONS (CONTD)
TABLE 1. SDC-361/362 SPECIFICATIONS
SDC-361
SDC-362
±1 LSB ( 20 sec)
±1 LSB ( 40 sec)
VALUE
TTL
Natural binary angle; pos. logic
1-2.5 sec positive pulse,
data changes on leading edge
±1.0 VDC ±30% for 100°/sec
at 400 Hz
±1.0 VDC ±30% for 25°/sec
at 60 Hz
±10 VDC min
±10 Kohm max
0-1000°/sec minimum
0-250°/sec minimum
384°/sec typ
23°/sec typ
No Lag Error
400 msec
480 msec
1400 msec
1800 msec
Scale Factor
Range
Loading
Input Rate for Full Velocity
Options H, M, L (400 Hz)
Option I (60 Hz)
Acceleration for 1 LSB Lag
Options H, M, L(400 Hz)
Option I ( 60 Hz)
Settling Time
For Normal Tracking
(Up to specified Input Rate)
For 179° Step Change
(Typical Values)
Options H, M, L (400 Hz)
Settling to 1 LSB
Settling to Final Value
Options I (60 Hz)
Settling to 1 LSB
Settling to Final Value
Velocity Constant
(Type II Servo Loop)
Acceleration Constant
Options H, M, L ( 400 Hz)
Option I ( 60 Hz)
Signal
Frequency
Range
Reference
Frequency
Range
350-3000 Hz
47-3000 Hz
350-3000 Hz
Logic “0” inhibits, 0.2 Std TTL
loads plus 18 Kohm min
pull-up resistor to +5 V supply.
2 Std TTL loads (Consult factory
for 5 Std load capability)
Logic 0 = normal tracking
Logic 1 = not tracking within
fine speed range
40-150 V rms
10- 50 V rms
Signal Input
Impedance
(L-L Balanced,
Resistive)
Reference Input
Impedance
(L-L Balanced,
Resistive)
148 Kohm min
19 Kohm min
148 Kohm min
42 Kohm min
19 Kohm min
300 Kohm min
80 Kohm min
16 bits
PARAMETER
RESOLUTION
(All inputs transformer isolated.
Other freq. and volt. available.on
special order. )
Resolver Input
Reference Input
DIGITAL INPUT/OUTPUT
ANGULAR VELOCITY OUTPUT
POWER SUPPLIES
Nominal Value
Voltage Range
Max Voltage without Damage
Current
Typical
Maximum
Operating
-1 Option
-3 Option
Storage
Size
Weight
DYNAMIC CHARACTERISTICS
(Continued)
+15 V
+11.5 to
+16.5 V
+18 V
10 mA
15 mA
-15 V
-11 to
-16.5 V
-18 V
35 mA
50 mA
+5 V
+ 4.5 to
+ 5.5 V
+7 V
110 mA
150 mA
-55°C to + 105°C
0°C to + 70°C
-55°C to + 125°C
3.125 x 2.625 x 0.82 inches
(79.4 x 66.7 x 20.8 mm)
7 oz
(200 g)
Logic Type
Outputs
16 Parallel data Bits
Converter Busy (CB)
Synchro Input
90V L-L, 400 Hz (Option H)
90V L-L, 60 Hz (Option I)
11.8V L-L, 400 Hz (Option L)
90V L-L, 400 Hz (Option H)
26V L-L, 400 Hz (Option I)
11.8V L-L, 400 Hz (Option L)
(Option H, I )
(Option M, L)
Inhibit Input (INH) Loading
Drive Capabilitity
BIT (Bilt In Test)
Kv =
∞
KA = 70,000 Nominal
KA = 4,300 Nominal
INTRODUCTION
The operation of a two speed S/D is essentially the same as a
single speed module, except there are two control transformers
(CT) which generate two error voltages. These two CTs are fed
by a common up-down counter. The counter data is multiplied by
36 for an SDC-361 and 18 for an SDC-362 to generate the fine
speed CT. Assuming an off-null condition as when the system is
initially energized, the crossover detector feeds the coarse (1X)
CT error signal output to the demodulator and error processor.
The converter seeks a null as it would for a single speed S/D. As
null is approached (to within 2.5° nominally) the coarse CT out-
put drops below a preset threshold and the crossover detector
then switches the fine CT error signal (36X for SDC-361, 18X for
SDC-362) into the demodulator and error processor.
Since the counter angle
θ is multiplied by 36X for SDC-361, and
18X for SDC-362, the gradient of the fine speed CT is 36X the
coarse output CT for the SDC-361, and 18X for the coarse out-
put CT for the SDC-362. The servo loop then seeks a finer null,
using the fine speed CT error signal. The converter continues to
use the fine error signal for continuous tracking, and only switch-
es back to the coarse signal when the coarse error exceeds the
crossover threshold. To eliminate false stable nulls at 180°, an
angle offset and stickoff voltage are introduced in the coarse
channel. The ±15 V power supplies can vary over their specified
ranges with no change in the converter specifications except for
a proportional change in the maximum ± tracking rates. When
testing or evaluating the converters, it is advisable to limit the
current to each of the three power supplies. Set each current
limit to 50% greater than the maximum current listed for that sup-
ply in TABLE 1.
DYNAMIC CHARACTERISTICS
ACCURACY
SIGNAL AND REFERENCE INPUT
TEMPERATURE RANGES
PHYSICAL CHARACTERISTICS
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