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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0.01μm，響應速度：200m/min，適用工控系統：FANUC、三菱電機、松下。
| Model | SR74 | SR75 |
| Measuring length (ML) |
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 |
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 |
| Thermal expansion coefficient (/ °C) | 12 ± 1 x 10-6/ °C | 12 ± 1 x 10-6/ °C |
| Output signal |
A/B, Reference point line driver signal (compliant with EIA-422) |
Incremental serial bidirectional signal, compliant with EIA-485 |
| Accuracy (at 20 °C) ML:mm | 3+3ML/1,000 μm p-p or 5+5ML/1,000 μm p-p | 3+3ML/1,000 μm p-p or 5+5ML/1,000 μm p-p |
| Resolution |
Selectable from 0.05,0.1,0.5 and 1.0 μm ( Set at factory shipping) |
Selectable from 0.01,0.05,0.1,0.5 and 1.0 μm ( Set at factory shipping) |
| Reference point |
None, Center point, Multi-point (40 mm pitch), Reference mark (standard pitch: 20 mm), User-selected point (1 mm pitch) |
None, Center point, User-selected point (1 mm pitch) |
| Power supply voltage | DC4.75 - 5.25V(At cable connection end) | DC4.75 - 5.25V(At cable connection end) |
| Consumption current | 200 mA (at 120 Ω terminal) max. | 200 mA (at 120 Ω terminal) max. |
| Imrush current | 2A max. (When the power supply rise time is 10 ms) | 2A max. (When the power supply rise time is 10 ms) |
| Maximum response speed |
50m/min(Resolution: 0.1 um, Minimum phase difference: at 100 ns) |
200m/min (User-selected resolution setting) |
| Vibration resistance | 150m/s2 (50Hz~3kHz) | 150m/s2 (50Hz~3kHz) |
| Impact resistance | 350m/s2 (11ms) | 350m/s2 (11ms) |
| Protective design grade | IP54 (Air purge not included), IP65 (Air purge included) | IP54 (Air purge not included), IP65 (Air purge included) |
| Other protections | Oil lubricant can also be used under severe environmental conditions. | Oil lubricant can also be used under severe environmental conditions. |
| 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. |
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). |
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( °C) | 0 ~ +50 °C | 0 ~ +50 °C |
| Storage temperature range( °C) | -20 ~ +55 °C | -20 ~ +55 °C |
| Mass | Approx.0.27kg + 1.36kg/m | Approx.0.27kg + 1.36kg/m |
| Slider sliding resistance | 1N or less | 1N or less |
| Model | CH33-**CP | CH33-**CE |
| Descrtption | Cable with open end | Cable with open end |
| Cable length | 3,5,10,15m | 3,5,10,15m |
| Material | PVC | PU |
| Armor | YES | YES |
