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BL57Laserscale

BL57 Laserscale
  • Features
  • Specifications
  • Dimensions
  • Manual
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Features

Supports a wide range of applications and offers the highest performance in its class. Ideal for precision stages, semiconductor inspection systems, precision processing machines, and liquid crystal manufacturing equipment.

  • BL57-RE
    • Achieves a measuring length of up to 1,060mm upon request, and offers the highest-level response speed and accuracy in its class.
    • Signal pitch : 400nm
    • Built-in reference point. 〈Applications〉Precision measuring equipment, precision stages.
  • BL57-NE
    • Compact size makes machine integration much easier
    • Theoretically unaffected by changes in temperature, humidity, air pressure and air movement. Unparalled measuring stability achieved by use of low expansion glass
    • Signal pitch : 400nm 〈Applications〉High-accuracy microscopes, measurement equipment.

Specifications

Main specifications [BL57-RE]
ModelFGH
Output signal formA/B quadrature outputAnalog output
Detection principleDiffraction grating scanning system
Scale length
(Low expansion
glass)
Measuring length 30, 60, 110, 160, 210, 260, 310, 360, 410 mm
Max. travelMeasuring length + 10mm (5mm on each side)
Overall lengthMeasuring length + 36mm
Scale length
(Soda-lime
glass)
Measuring length60, 160, 260, 360, 460, 560,
660, 760, 860, 960, 1060 mm
Max.
travel
Measuring length +10mm (5mm on each side)
Overall lengthMeasuring length + 36mm
Grating pitch1.6μm
Signal pitch0.4μm (400nm)
Output signalDifferential
(compliant with EIA-422)
Differential (only reference
point output are
compliant with EIA-422)
Resolution0.1/0.05μm
(selectable)
0.02/0.01μm
(selectable)
0.4μm
(1Vp-p)
Scale accuracy
(at 20℃)
±0.5μm(30 to 160mm) /
1.0μm(210 to 360mm) /
±1.5m(410mm or more)
Thermal
expansion
coefficient
Low expansion glass: -0.7x10-6/℃
・Soda-lime glass: 8x10-6/℃
Max. response
speed
1,500mm/s(0.1μm)
650mm/s(0.05μm)
300mm/s(0.02μm)
120mm/s(0.01μm)
3,000mm/s
(*1)
Minimum phase
difference:38ns
Minimum phase
difference:38ns
Max 7.5MHz
AlarmHigh impedance, output when max.
response speed is exceeded
or signal level error detected
None
Reference point positionUser definable (within the range of
measuring length)
Reference point accuracy (at 20℃)±0.4μm (depending on
machine movement accuracy)
Reference point detection directionSingle direction synchronous
reference point
Head
cable
Cable
length
1m (*4)
Bending
radius
Static : 10mm
Output cable length 15m Max (*2)
(to the electronic control section)
15m Max(*1) (*2)
Power supply (*3)+5V (±5%)
Power
consumption
450mA (no load), 600mA
(with 120Ω termination)
Vibration
resistance
100m/s2 (50 to 2000Hz)
Impact
resistance
200m/s2
Operating
temperature
0 to +40˚C(No condensation)
Storage
temperature
-10 to + 50˚C
Light
source
Semiconductor laser :
Wavelength 790nm, Output 6mW
Radiation
power
JIS Class 1 equivalent,
DHHS Class 1 equnivalent

(*1) Max. response speed become limited by output cable length (the part beyond the interface box).

Cable length (m)Max. response speed (mm/s)
33,000
92,330
151,660

(*2): A power supply line longer than 10m is incompatible with EN61000-6-2. Take surge protection measures upon use.

(*3): Satisfy the required specifications at the connector input section.

(*4): Special models can support up to 3m. However, the max. response speed is limited depending on the cable length.(In a 3m cable, the max. response speed is two-thirds that of a 1m cable.)

(*5): Special models can support a measuring length of 420mm to 560mm by low expansion glass and 1,070mm to 1,260mm by soda-lime glass.

Main specifications [BL57-NE]
ModelAFGH
Output signal formA/B quadrature outputAnalog output
Detection principleDiffraction grating scanning system
Scale length
(Low expansion
glass)
Measuring length 30, 70, 120, 170, 220, 270, 320, 370, 420 mm
Max. travel Measuring length +10mm (5mm on each side)
Overall length Measuring length + 26mm
Scale length
(Soda-lime
glass)
Measuring length60, 160, 260, 360, 460, 560,
660, 760, 860, 960, 1060 mm
Max. travelMeasuring length +10mm (5mm on each side)
Overall lengthMeasuring length + 36mm
Grating pitch1.6μm
Signal pitch 0.4μm (400nm)
Output signalDifferential (compliant with EIA-422) Differential
Resolution0.1μm0.1/0.05μm
(selectable)
0.02/0.01μm
(selectable)
0.4μm
(1Vp-p)
Scale accuracy (at 20℃)±0.5μm (30 to 170mm) / 1.0μm (220 to 370mm) /
±1.5μm (420mm or more)
Thermal expansion coefficientLow expansion glass: -0.7 x 10-6/℃・
Soda-lime glass: 8 x 10-6/℃
Max.
response
speed
1,000mm/s1,500mm/s (0.1μm)
650mm/s
(0.05μm)
300mm/s(0.02μm)
120mm/s(0.01μm)
3,000mm/s (*1)
Minimum phase
difference:80ns
Minimum phase
difference:38ns
Minimum phase
difference:38ns
Max 7.5MHz
AlarmHigh-impedance A/B quadrature output signals when signal level error detected. High-impedance output when max. response speed exceeded or signal level error detected. None
Head
cable
Cable length300mm
Bending radiusStatic: 10mm
Output cable length 15m Max (*2)
(to the electronic control section)
15m Max
(*1)(*2)
Power supply (*3)+5V (+10%-5%)+5V (±5%)
Power
consumption
200 mA
(no load)
250 mA
(with 120Ω
termination)
290mA
(no load)
350mA
(with 120Ω
termination)
250 mA
(no load,
with 120Ω
termination)
Vibration
resistance
100m/s2(50 to 2000Hz)
Impact
resistance
200m/s2
Operating
temperature
0 to +40˚C(no condensation)
Storage
temperature
-10 to + 50˚C
Light
source
Semiconductor laser :
Wavelength 790nm, Output 6mW
Radiation
power
JIS Class 1 equivalent,
DHHS Class 1 equivalent

(*1) Max. response speed become limited by output cable length (the part beyond the interface box).

Cable length(m)Max. response speed (mm/s)
33,000
92,330
151,660

(*2)A power supply line longer than 10m is incompatible with EN61000-6-2.Take surge protection measures upon use.

(*3)Satisfy the required specifications at the connector input section.

Magnescale reserves the right to change product specifications without prior notice.

Dimensions

*Please contact our sales department.

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Manual

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BL57RE Download Download Download

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Catalog

BL57 SeriesJapaneseBL57 Catalog Japanese PDF
BL57 SeriesEnglishBL57 Catalog English PDF

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