 |
Design Features:
- Replaces Size 15 Pancake Resolver
- Bearing design simplifies
encoder attachment
- Resolutions up to 20,000 lines per revolution
- 4, 6 or
8 pole commutation
- Eliminates expensive mounting servo
clamps
- Accommodates resolver type ¼” threaded
shafts
- High Noise Immunity
- Cost Competitive with Modular Encoders
- 500 kHz Frequency
Response
- RoHS Construction
|
Description:
Quantum Devices, Inc. Model JR12 provides an improved feedback
solution in applications typically using pancake resolvers with
same threaded shaft and jam nut mounting. With an over all height
of less than one inch and the stability of a bearing encoder
design, the model JR12 can provide significant performance upgrades
in applications limited by traditional resolvers or modular encoder
solutions. Output options consist of a quadrature with index
pulse and three-phase commutation. A flexible member allows for
much greater tail shaft run out and TIR than can be tolerated
by modular encoder designs, plus the mounting flange eliminates
the need for expensive servo mounting clips.
Ordering Information
Sample: JR12-1000-4-A-R-N-R-A
| Model |
PPR |
Poles |
Electrical |
Hub Configuration |
Hub Size |
Mounting |
Index |
| JR12 |
24*
256
360
500
512
1000
1024
1250
2000
|
2048
2500
4000
4096
5000
8192
10000
16384
20000 |
0=0
4=4
6=6
8=8 |
A=RS422 (TTL)
B=oc UVW |
|
R=.250" |
C= SS 1.280” Flex |
A=Gated to AB, 90deg |
Consult Factory For Configurations Not Shown, * 24PPR only available
0 poles.
Electrical Specifications
| Input Voltage |
5 VDC ± 5% |
| Input Current Requirements |
65mA Typ., 100mA Max Plus Interface Loads |
| Input Ripple |
2% Peak to Peak @ 5 VDC |
| Output Circuits |
(A) 26C31 RS 422A Line Driver (TTL Compatible)
(B) ABZ Line Driver, UVW Open Collector (No U’ V’ W’) |
| Incremental Output Format |
Quadrature with A leading B for CW rotation.
Index Pulse true over A and B High. |
| Frequency Response |
500 kHz |
| Symmetry |
180 Degrees ± 10% Typical |
| Minimum Edge Separation |
<4000PPR = 54 electrical degrees
≥4000PPR = 45 electrical degrees |
| Commutation Format |
Three Phase 4, 6 or 8 poles |
| Commutation Accuracy |
± 1° mechanical |
Environmental Specifications
| Storage Temperature |
-40 to 125° C |
| Operating Temperature |
-20 to 115° C |
| IP Rating |
40 |
| Humidity |
90% Non-Condensing |
| Vibration |
20 g's @ 50 to 500 CPS |
| Shock |
50 g's @ 11mS Duration |
Mechanical Specifications
| Through Shaft Diameter |
0.250" Tolerance: -0.0000,
+ 0.0006” |
| Radial Shaft Movement Max. |
0.007" TIR |
| Axial Shaft Movement |
± 0.030" |
| Maximum Shaft Speed |
8000 RPM, Contact Customer Service
for Higher RPM |
| Interface Connector |
Connector: JAE P/N F1-W15P-HFE |
| Mounting |
Size 15 Pancake Resolver |
| Moment of Inertia |
9.1 x 10-5 oz-in-S2 |
| Acceleration |
1x105 Radians/S2 |
| Accuracy |
Instrument Error 1.5 arc min. max |
For brushless motors requiring commutation timing:
- Encoder drawings indicate position of encoder hub to encoder
body at Z (index). Rotating the hub to this position allows for
known U channel transition state, prior to assembling to motor
shaft.
- Power appropriate motor windings to lock motor
shaft location to match the appropriate U transition, prior to
assembly to motor shaft.
- Flex mount screws can be loosened
to allow rotation of encoder body. While mechanically back driving
the motor, monitor motor winding EMF position to the powered
encoder commutation position. Rotate the encoder body to achieve
accurate timing of encoder commutation feedback channels to the
appropriate motor winding EMF. Mounting slots in encoder flex
mount allow for 30 mechanical degrees of rotation. Retighten
the flex mount screws.
Additional installation and handling instruction available at:
www.quantumdev.com/pdf/EncoderMountingInstr.pdf
Find the
QDI encoder distributor in your area...
To learn more about this encoder contact
us.
|
