CC 3820-R RESOLVER TRANSDUCER

GENERAL

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.

APPLICATION

The 3820-R Resolver transducer is designed for use as a positioning feedback device in mill duty environments. Among its features are:
  1. Absolute Measurement - Retains exact position throughout a power shutdown
  2. Long-line Transmission capability - 1000 feet and greater.
  3. Very high degree of noise rejection. Ratio type of signal transmission using a modulated carrier waveform.
The single resolver configuration will support conversion accuracy and resolution to a 12 bit number. The dual resolver configuration will support conversion accuracy and resolution to a 21 bit number.

 

 

ELECTRICAL SPECIFICATIONS
Feedback Device Brushless Resolver
Frequency Range 400-10,000 Hz
Excitation Voltage (rotor) 7.5 rms
Excitation Current (max) 40 mA rms
Output Voltage (stator) 8.0 rms
Transformation Ratio 1.067 +/-5%
Accuracy +/-7 minutes of arc
Operating Temperature -55° to 125° C

MECHANICAL SPECIFICATIONS
Housing NEMA 13
Material-6061 Anodized Aluminum
Seal - O - Ring
Fasteners 316 Stainless Steel 

Shaft Size

0.4998" (+.0000, -.0005)
316 Stainless Steel 
1/8" Keyway
Shaft Seal Teflon Graphite 
Moment of Inertia

1550g / cm2

Bearing Life 2 x108 revs at rated shaft loading

Shaft Torque

0.5 to 1.0 oz - in w/o seal
1.0 to 2.0 oz - in w/ seal
Shaft Runout 0.0005 T.I.R.  
Speed 6,000 RPM, with shaft seal  
Weight 12 lb.
OTHER RESOLVERS ARE AVAILABLE

ORDERING INFORMATION

How to build your CC3820R Model Number

EXAMPLE: CC3820R   D   1:10A   FM   C
1   2   3   4   5
 

MODEL = CC3820R   =   BASIC (Mill Duty) DESIGN
1 = RESOLVER CONFIGURATION
_____S = Single = 4096 total counts

_____D = Dual = 262,144 total counts
_____T = Tandem = (2)singles each 4096 total counts
2 = GEAR RATIO
Note: All gear trains are of anti-backlash design

          Gear-Down
_____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 ex. 2.5:1

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.

          Gear-Up
_____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

3 = MOUNTING
_____FM = Foot Mount
_____56C = NEMA 56C Flange
_____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 Foot Mount
_____FC = Motor Mount - Direct Mounting to 8" dia motor pilot with (4) 1/2-13 mounting holes
                     on a  7.250" B.C., includes coupling kit.
_____45P = CC45P Flange Mount
_____45C = CC45C Flange Mount

Also available, various Adapter Plates for interfacing with existing devices, for example: Selsyns and Limit Switches

4 = OUTPUT TERMINATION

_____MS = MS Connector, with mate
_____C = Conduit, 1/2" NPT tapped hole

PRODUCT DIMENSIONS

Dimensions = Inches (mm)

  • Multiple mounting options available:
    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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