SR74/750 pages

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SR74/75

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This slim type magnetic scale system

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that outputs position signals for machine tools

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and other equipment that require

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high-precision positioning.

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Measuring Length(ML) : 70-2,040mm

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Accuracy : 3+3ML/1,000 urn p-p,

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5+5MLV1,000 urn p-p

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Maximum resolution : 0.01 urn

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Maximum response speed : 200m/min.

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Protocol (SR75) : Mitsubishi

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Slim I Maximum

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I resolution

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typ© I 0.01 urn

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(SR75 only)

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Magnescale

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PRECISE IN PRECISION

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Specifications

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Measuring length (ML]

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70~2040mm

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70, 120, 170, 220, 270, 320, 370, 420, 470, 520, 570, 620, 720, 770, 820, 920,

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1020, 1140, 1240, 1340, 1440, 1540, 1640, 1740, 1840, 2040

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Thermal expansion coefficient (/ °C)

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12 ±1 xlO-V'C

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Output signal

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A/B, Reference point line driver signal

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(compliant with EIA-422]

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Incremental serial bidirectional signal,

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compliant with EIA-485

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Accuracy (at 20 °C) MLmm

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3+3ML/1,000 um p-p or 5+5ML/1,000 um p-p

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D Selectable from 0.05,0.1,0.5 and 1.0 um Resolution r ( Set at factory shipping)	Selectable from 0.01,0.05,0.1,0.5 and 1.0 um ( Set at factory shipping)
None, Center point, Multi-point (40 mm pitch), Reference point Reference mark (standard pitch: 20 mm), User-selected point (1 mm pitch)	None, Center point, User-selected point (1 mm pitch)

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Power supply voltage

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DC4.75 - 5.25V(At cable connection end)

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Consumption current

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200 mA (at 120 Q terminal) max.

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Imrush current

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2A max. (When the power supply rise time is 10 ms)

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Maximum response speed

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50m/min(Resolution: 0.1 um,

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Minimum phase difference: at 100 ns)

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200m/min

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(User-s elected resolution setting)

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Vibration resistance

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150m/s2 (50Hz~3kHz)

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Impact resistance

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350m/s2 (11ms)

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Protective design grade

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IP54 (Air purge not included), IP65 (Air purge included)

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Other protections

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Oil lubricant can also be used under severe environmental conditions.

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Power supply protection

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In the case of errors such as a reverse-connected power supply or over-voltage,

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the internal fuse is cut to protect the power being supplied and wiring.

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Safety standards

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FCC Parti 5 Subpart B Class A. ICES-003 Class A Digital Device.

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EN55011 Gp1 Class A, EN61000-6-2. Safety standards not applicable (60 V DC or less).

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Operating temperature range( °C)

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0 ~ +50 "C

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Storage temperature range( T;)

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-20 ~ +55 "C

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Mass

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Approx.0.27kg + 1.36kg/m

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Slider sliding resistance

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Mode
Description		Cable with open end	Cable with open end
Cable length		3,5,10,15m
Material		PVC	PU
Armor		YES	YES

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"Please consult with our sales for the cable length other than above.

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Details of model designation-

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Minimum phase difference I

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SR74-XXX*OAfDDD

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SR75-xxx*OABDDD

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Single reference mark shown by mm from left end of ML e.g.

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850mm = 850, in case of center then X For 1000mm or longer, 2

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left digits shown by alphabet

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1,000-1,099mm A 1,400-1,499mm E 1,800-1,899mm J

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1,100-1,199mm B 1,500-1,599mm F 1,900-1,999mm K

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1,200-1,299mm C 1,600-1,699mm G 2,000~2,040mm L

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1,300-1,399mm D 1,700-1,799mm H Ex :1,050mm—A50

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^ Specific mark : X=center, SR75 is only single reference mark.

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Communication protocol f-

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Phase difference (ns)
50	A	500	H
100	B	650	J
150	G	1000	K
200	D	1250	L
250	E	2500	M
300	F	3000	N
400	G

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-| Resolution & Direction* |-

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- Accuracy grade A : 5+5ML71000 S : 3+3ML71000um

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ML : Measuring length by mm

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- Cable out direction: R= Right, L= Left

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- Measuring length by cm

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Resolution (um)	SR74		SR75
	+		+
0.01			A	F
0.05	B	G	B	G
0.1	G	H	G	H
0.5	D	J	D	J
1.0	E	K	E	K

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NG Maker	Wire
Mitsubishi	2	B
	4	D

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*When the slider is moved in the direction of the arrow, the A signal is ahead when

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the direction is "positive,"and B signal is ahead when the direction is "negative.'

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35

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