Instruction manual

16 (E)
SR84 / SR85, CH33
7.5 40 40 40
7.5 P1 P1 P1
P3 P3 P3P2
5. Specifications
5-1. Scale
Model name SR84-XXX
Item
Measuring length (ML) 140 to 3040 mm (24 types)
140, 240, 340, 440, 540, 640, 740, 840, 940, 1040, 1140, 1240, 1340, 1440,
1540, 1640, 1740, 1840, 2040, 2240, 2440, 2640, 2840, 3040
Thermal expansion coefficient 12 ±1 ✕ 10
–6
/
o
C
Output signal A/B, Reference point line driver signal (compliant with EIA-422)
For details, see section 3-1, “Scale (SR84/85).”
Minimum phase differential time Selectable from 50/100/150/200/250/300/400/500/650/1000/1250/2500/3000 ns
(set at factory shipping)
Accuracy (at 20
o
C) 3 + 3ML/1000 µmp-p or 5 + 5ML/1000 µmp-p
Resolution Selectable from 0.01, 0.05, 0.1, 0.5, and 1.0 µm (set at factory shipping)
Bidirectional reference point • None • Center point • Multi-point (40 mm pitch)
• Reference mark (standard pitch ML 140 to 2040 mm: 20 mm, ML 2240 to
3040 mm: 40 mm) • User-selected point (1 mm pitch)
Power supply voltage DC 4.75 - 5.25 V (At cable connection end)
Consumption current 200 mA (at 120
Ω
terminal) or less
Inrush current 2 A max. (When the power supply rising time is 10 ms)
Maximum response speed 50 m/min (Resolution: 0.1 µm, Minimum phase difference: at 100 ns)
Vibration resistance 250 m/s
2
(50 Hz to 2 kHz)
Shock resistance 450 m/s
2
(11 ms)
Protective design grade IP54 (Air purge not included), IP65 (Air purge included)
For details, see section 4-1, “Air purge.”
Other protections Oil lubricant can also be used under severe environmental conditions.
For details, see section 4-2, “Oil Lubrication.”
Power supply protection In the case of errors such as a reverse-connected power supply or over-voltage,
the internal fuse is cut to protect the power being supplied and wiring.
Safety standards FCC Part15 Subpart B Class A
ICES-003 Class A Digital Device
EN55011 Gp1 Class A, EN61000-6-2
Safety standards not applicable (60 V DC or less)
Operating temperature range 0 to + 50
o
C
Storage temperature range –20 to +55
o
C
Mass Approx. 1.24 kg + 4.00 kg/m
Slider sliding resistance 1 N
Dimensions See section 6, “Dimensional Diagrams.”
The information here is subject to change without notice. When designing machines, please request the latest
specifications from your nearest sales representative.
Multi-point reference signal and Reference mark reference signal positions
Fig. 5-1
Unit: mm
Reference point signal
Multi-point
Reference mark
Measuring
P1 P2 P3
length (ML)
140 to 2040 20 10.08 20.08
2240 to 3040 40 20.08 40.08