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磁性尺SR74/SR75:為工作機械所開發的最適合用在精密平臺定位的磁尺,輸出信號為增量式A/B相/原點差動信號（符合EIA-422）及增量式串列雙方向信號（符合EIA-485）；適用工控系統：FANUC、三菱電機、松下性：
適合應用于精密平臺定位
薄型增量型磁尺
該系列磁性尺是永久磁性記錄組成，所以即使暴露在冷卻液下，也可以不受其影響，能保持讀取能力。且因該系列尺與本體以鐵制成，故溫度膨脹系數與機臺相同，精密度不易失真，且抗振動與沖擊。
SR74 SR75 多原點磁尺:為工作機械所開發的最適合用在精密平臺定位的磁尺,輸出信號為增量式A/B相/原點差動信號（符合EIA-422）及增量式串列雙方向信號（符合EIA-485）；精度(3+3ML/1000)μm，測量長度：70-2040mm，分辨率0.01?m，響應速度：200m/min，適用工控系統：FANUC、三菱電機、松下。
技術參數：  
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Model
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SR74
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SR75
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Measuring length (ML)
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70~2040mm
70, 120, 170, 220, 270, 320, 370, 420, 470, 520, 570, 620, 720, 770, 820, 920,
1020, 1140, 1240, 1340, 1440, 1540, 1640, 1740, 1840, 2040
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70~2040mm
70, 120, 170, 220, 270, 320, 370, 420, 470, 520, 570, 620, 720, 770, 820, 920,
1020, 1140, 1240, 1340, 1440, 1540, 1640, 1740, 1840, 2040
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Thermal expansion coefficient (/ °C)
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12 ± 1 x 10-6/ °C
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12 ± 1 x 10-6/ °C
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Output signal
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A/B, Reference point line driver signal
(compliant with EIA-422)
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Incremental serial bidirectional signal,
compliant with EIA-485
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Accuracy (at 20 °C) ML:mm
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3+3ML/1,000 μm p-p or 5+5ML/1,000 μm p-p
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3+3ML/1,000 μm p-p or 5+5ML/1,000 μm p-p
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Resolution
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Selectable from 0.05,0.1,0.5 and 1.0 μm
( Set at factory shipping)
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Selectable from 0.01,0.05,0.1,0.5 and 1.0 μm
( Set at factory shipping)
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Reference point
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None, Center point, Multi-point (40 mm pitch),
Reference mark (standard pitch: 20 mm),
User-selected point (1 mm pitch)
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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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DC4.75 - 5.25V(At cable connection end)
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Consumption current
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200 mA (at 120 Ω terminal) max.
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200 mA (at 120 Ω 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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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,
Minimum phase difference: at 100 ns)
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200m/min
(User-selected resolution setting)
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Vibration resistance
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150m/s2 (50Hz~3kHz)
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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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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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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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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,
the internal fuse is cut to protect the power being supplied and wiring.
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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.
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Safety standards
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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).
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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).
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Operating temperature range( °C)
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0 ~ +50 °C
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0 ~ +50 °C
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Storage temperature range( °C)
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-20 ~ +55 °C
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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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Approx.0.27kg + 1.36kg/m
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Slider sliding resistance
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1N or less
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1N or less
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Model
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CH33-**CP
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CH33-**CE
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Description
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Cable with open end
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Cable with open end
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Cable length
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3,5,10,15m
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3,5,10,15m
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Material
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PVC
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PU
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Armor
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YES
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YES
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