MicroE Optira Installation Manual
Celera Motion
IM-1001 | REV181211
Page 15
©2018 Celera Motion
7.0 Appendix
7.1 Specifications
System
Operating and Electrical Specifications
Scales
Optira Series Encoders are compatible with Optira Tape
Scales, Linear Scales, and Rotary Glass Scales
Agency Standards Compliance in accordance with
Electromagnetic Compatibility Directive 2004/108/EC:
Scale Pitch
20
µm
EN55011, Class B:
EN 61000-4-3:
EN 60068-2-6:
EN 60068-2-27:
Radiated Emissions
Radiated Immunity
Vibration
Mechanical Shock
System
Resolution
5
µm, 2.5
µm, 1
µm, 0.5
µm, 0.2
µm,
0.1
µm, 50 nm, 20 nm, 10 nm, 5 nm.
Analog 1 Vpp.
2,000 CPR – 75M CPR (rotary)
(specify resolution at time of ordering)
Power Supply Current
AquadB, 3.3 and 5 V
DC
±5%:
Analog, 3.3 and 5 V
DC
±5%:
Ready Time:
<130 mA with 120
Ω across A, B, I
<75 mA with no load
<100 mA with 120
Ω across Sin/Cos, IW
<75 mA with no load
<0.5s once power >4.5 V
Accuracy
Tape
SDE:
Linearity:
Slope:
<100 nm RMS
<± 5
µm (max/meter)
<±150 µm/m
Temperature
Operating:
Storage:
0°C to 70°C
-20°C to 85°C Temperature
Linear Glass
SDE:
Total Accuracy:
<100 nm RMS
<±1 µm/m
1
Humidity
Operating:
Storage:
Up to 85% RH, non-condensing
Up to 85% RH, non-condensing
Rotary Glass
Total Accuracy:
±2 arc-seconds
2
Vibration
10 g, 55 Hz to 2 KHz
Sensor Size and Weight
Mechanical
Shock
500 m/s
2
, 6 ms, ½ sine
Length
Width
Height
Outputs
Digital A-quad-B. A, B, Index outputs are differential
Alarm is single-ended open collector
Analog outputs are differential sine and cosine
Dimensions (mm):
13.0
11.4
3.7
Weight: <1.5 g sensor head
Sensor Cable
ZIF Flat Flexible Cable (FFC)
10 pins; length up to 5 m.
Signal Levels
A/B/I (differential); RS-422 compatible
A/B/I (single-ended): Voh min: Vcc - 0.4 V
DC
, Vol max: 0.4 V
DC
,
Alarm: Voh min: Vcc, Vol max: 0.4 V
DC
Analog: 1 Vpp, 2.5 V offset @ 5 V
DC
; 1.65 V offset @ 3.3 V
DC
Reliability Information
MTBF >200,000 hours under normal operating conditions
(calculated using MIL-STD-217)
Notes
:
1. 130 mm or less
2. 125 mm diameter, excludes eccentricity
Maximum Velocity – Quadrature Output
Maximum Velocity (before Overspeed Buffer Protection
3
) vs. Interpolation Depth
Controller Recommended
AqB Maximum State
Rate (MegaStates/Sec)
Actual Encoder AqB
Maximum State Rate
(MegaStates/Sec)
5000
2500
1000
500
200
100
50
20
10
5
Resolution (nm)
4
8
20
40
100
200
400 1000 2000 4000
Interpolation Depth
20
14.50
4000
4000
4000
4000
2900
1450
300
290
145
72
Maximum
Velocity (mm/s)
10
7.25
4000
4000
4000
3625
1450
725
300
145
72
36
5
3.63
4000
4000
3625
1812
725
362
181
72
36
18
2
1.45
4000
3625
1450
725
290
145
72
29
14
7
1
0.73
3625
1812
725
362
145
72
36
14
7
3
Notes
3
:
1. Optira implements Overspeed Buffer Protection (OBP). No AqB counts are lost for velocities below 4830 mm/s even if the
maximum specified rate is exceeded. If the velocity exceeds the specified state rate, the AqB counts are buffered (buffer
length = 21 m at 4000x interpolation depth) and transmitted at the specified state rate.
2.
The ALARM bit sets TRUE at 4 m/s, however, Optira will continue to produce valid AqB outputs up to
6 m/s although accuracy specifications are no longer guaranteed
.
Maximum Velocity (Analog)
Sine/Cosine Vector Magnitude: > 0.5 Vpp at 4 m/s
Contact Celera Motion to discuss higher speed applications.
