The 3820-R Resolver Transducer
is used as a position feedback device where absolute measurement
is required. Both single and dual resolver versions are available.
The dual resolver unit contains a fine resolver which is
geared 64:1 to the coarse resolver enabling greatly increased
accuracy and resolution. The 3820R contains no electronics!
It is a rugged electrical device and should be transformer
coupled to the control system to avoid any induced noise
via control common. The resolver-to-digital electronics are
mounted within the control system enclosure.
The 3820-R Resolver transducer is designed
for use as a positioning feedback device in mill duty environments.
Among its features are:
The single resolver configuration
will support conversion accuracy and resolution to a 12 bit number.
The dual resolver configuration will support conversion accuracy
resolution to a 21 bit number.
- Absolute Measurement - Retains exact
position throughout a power shutdown
- Long-line Transmission capability -
1000 feet and greater.
- Very high degree of noise rejection.
Ratio type of signal transmission using a modulated carrier
||40 mA rms
||+/-7 minutes of arc
Material-6061 Anodized Aluminum
Seal - O - Ring
||316 Stainless Steel
316 Stainless Steel
1550g / cm2
||2 x108 revs
at rated shaft loading
|0.5 to 1.0 oz
- in w/o seal
1.0 to 2.0 oz - in w/ seal
||6,000 RPM, with
RESOLVERS ARE AVAILABLE
How to build your
CC3820R Model Number
| MODEL =
CC3820R = BASIC
(Mill Duty) DESIGN
- 1 =
- _____S = Single
= 4096 total counts
- _____D = Dual = 262,144 total counts
- _____T = Tandem = (2)singles each 4096 total
- Note: All
gear trains are of anti-backlash design
_____Duals avail. from 1:1 to 100:1 to
and including 800:1
_____Singles avail. from 1:1 to 100:1 to
and including 1024:1
_____Also avail. are ratios between numbers, for
X:X = # of input turns to resolver turns.
Ex.:dual 4:1 means for every four turns of the machine
shaft the fine resolver will turn once and 4x64=256
is the # of input turns before the coarse resolver
will roll over.
_____Duals avail. from 1:1 to 1:64
_____Singles avail. from 1:1 to 1:100
_____Also avail. are ratios between numbers, for ex. 1:1.5
- _____FM = Foot Mount
_____56C = NEMA
_____MM = Motor
Mount (mounts directly to DC Kinematic Motor)
_____DS = Base
Plate to replace DS3820
_____S = Base
Plate to replace Selsyn
_____46FM = BC46 & BC42
Foot Mounts and NEMA 56C Face Mount (MM)
_____56FM = CC56FM
_____FC = Motor
Mount - Direct Mounting to 8" dia motor pilot with
(4) 1/2-13 mounting holes
a 7.250" B.C., includes coupling kit.
_____45P = CC45P Flange
_____45C = CC45C
available, various Adapter Plates for interfacing with
existing devices, for
example: Selsyns and Limit Switches
- _____MS = MS
Connector, with mate
- _____C = Conduit,
1/2" NPT tapped hole
Dimensions = Inches
- Multiple mounting
Foot Mounts, Flange Mounts, Face Mounts, etc.
- 5.70(145) O.D. max
x 8.5(216) long w/o mounting options
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