| Incremental Modular Angle
Encoders
ERA 780, ERA 880
Shown below: ERA 780
 |
ERA 880
 |
| |
ERA
780
|
| |
|
| The
ERA 780 and ERA 880 incremental modular
angle encoders feature an AURODUR steel scale tape as
measuring standard. On the ERA 780, the scale tape is
place in a slot in the inside circumference of the
hollow shaft. The scale tape of the ERA 880 is
fastened on the outside circumference of the measured
shaft. |
|
| |
ERA
780/ERA 880 |
| Incremental
signals |
 1
VPP |
| Grating
period |
40
µm |
| Resulting
line count |
| ERA
780: |
36
000 at D1 = |
458.62 |
+0.02
mm |
| |
40
000 at D1 = |
573.20 |
+0.03
mm |
| |
90
000 at D1 = |
1146.10 |
+0.06
mm |
| ERA
880: |
45
000 at D1 = |
572.63 |
-0.03
mm |
|
| Recommended
measuring steps |
0.0001°,
0.001° depending on the scale-tape-mount diameter and signal
interpolation |
|
