Made in Japan
Manufacturer: Magnescale Co., Ltd.
Model: BL57-RE/ BL57-NE

Features

• BL57-RE
  • Achieves a measuring length of up to 1,060 mm upon request, and offers the highest-level response speed and accuracy in its class.
  • Signal pitch : 400 nm
  • Built-in reference point.
  • Applications : Precision measuring equipment, precision stages, etc.
• 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 : 400 nm
  • Applications : High-accuracy microscopes, shape measurement equipment, etc.

• Specifications

  Main specifications [BL57-RE]
  The Laserscale uses a semiconductor laser. The laser beam is harmful to the human body, so please do not look into the detection head section
  Model		F	G	H
  Output signal form		A/B quadrature output		Analog output
  Detection principle		Diffraction grating scanning system
  Scale length (Low expansion glass)	Measuring length (mm)	30, 60, 110, 160, 210, 260, 310, 360, 410
  	Overall length	Measuring length +36 mm
  	Max. travel	Measuring length +10 mm (5 mm on each side)
  Scale length (Soda-lime glass)	Measuring length (mm)	60, 160, 260, 360, 460, 560, 660, 760, 860, 960, 1,060
  	Overall length	Measuring length +36 mm
  	Max. travel	Measuring length +10 mm (5 mm on each side)
  Scale accuracy (at 20 °C)		±0.5 µm (30 to 160 mm) / 1.0 µm (210 to 360 mm) / ±1.5 m(410 mm or more)
  Grating pitch		1.6 µm
  Signal pitch		0.4 µm (400 nm)
  Output signal		Differential (compliant with EIA-422)		Differential (only reference point output are compliant with EIA-422)
  Output resolution		0.1 / 0.05 µm (selectable)	0.02 / 0.01 µm (selectable)	0.4 µm (1 Vp-p)
  Reference point accuracy (at 20 °C)		±0.4 µm (depending on machine movement accuracy)
  Reference point position		User definable (within the range of measuring length)
  Reference point detection direction		Single direction synchronous reference point
  Thermal expansion coefficient		Low expansion glass: -0.7×10-6/°C ・Soda-lime glass: 8×10-6/°C
  Light source		Semiconductor laser : Wavelength 790 nm, Output 6 mW
  Radiation power		JIS Class 1 equivalent, DHHS Class 1 equnivalent
  Operating temperature		0 to +40 °C (no condensation)
  Storage temperature		-10 to +50 °C
  Max. response speed		1,500 mm/s (0.1 µm) 650 mm/s (0.05 µm)	300 mm/s(0.02 µm) 120 mm/s(0.01 µm)	3,000 mm/s (*1)
  		Minimum phase difference : 38 ns	Minimum phase difference : 38 ns	Max 7.5 MHz
  Alarm		High impedance, output when max. response speed is exceeded or signal level error detected		None
  Head cable	Cable length	1 m (*4)
  	Bending radius	Static : 10 mm
  Output cable length		15 m Max. (*2) (to the electronic control section)		15 m Max. (*1)(*2)
  Power supply (*3)		+5 V (±5 %)
  Power consumption		450 mA (no load), 600 mA (with 120 Ω termination)
  Vibration resistance		100 m/s2 (50 to 2,000 Hz)
  Impact resistance		200 m/s2
  (*1) Max. response speed become limited by output cable length (the part beyond the interface box).
  Cable length (m)		Max. response speed (mm/s)
  3		3,000
  9		2,330
  15		1,660
  (*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 3 m. However, the max. response speed is limited depending on the cable length. (In a 3 m cable, the max. response speed is two-thirds that of a 1 m cable.) (*5): Special models can support a measuring length of 420 mm to 560 mm by low expansion glass and 1,070 mm to 1,260 mm by soda-lime glass. (*6): For BD700 connection, please contact us.

  Main specifications [BL57-NE]
  The Laserscale uses a semiconductor laser. The laser beam is harmful to the human body, so please do not look into the detection head section.
  Model		A	F	G	H
  Output signal form		A/B quadrature output			Analog output
  Detection principle		Diffraction grating scanning system
  Scale length (Low expansion glass)	Measuring length (mm)	30, 70, 120, 170, 220, 270, 320, 370, 420
  	Overall length	Measuring length +26 mm
  	Max. travel	Measuring length +10 mm (5 mm on each side)
  Scale length (Soda-lime glass)	Measuring length (mm)	60, 160, 260, 360, 460, 560, 660, 760, 860, 960, 1,060
  	Overall length	Measuring length +36 mm
  	Max. travel	Measuring length +10 mm (5 mm on each side)
  Scale accuracy (at 20 °C)		±0.5 µm (30 to 170 mm) / ±1.0 µm (220 to 370 mm) / ±1.5 µm (420 mm or more)
  Grating pitch		1.6 µm
  Signal pitch		0.4 µm (400 nm)
  Output signal		Differential (compliant with EIA-422)			Differential
  Output resolution		0.1 µm	0.1 / 0.05 µm (selectable)	0.02 / 0.01 µm (selectable)	0.4 µm (1 Vp-p)
  Thermal expansion coefficient		Low expansion glass: -0.7 x10-6/°C・ Soda-lime glass: 8 x10-6/°C
  Light source		Semiconductor laser : Wavelength 790 nm, Output 6 mW
  Radiation power		JIS Class 1 equivalent, DHHS Class 1 equivalent
  Operating temperature		0 to +40 °C (no condensation)
  Storage temperature		-10 to +50 °C
  Max. response speed		1,000 mm/s	1,500 mm/s (0.1 µm) 650 mm/s (0.05 µm)	300 mm/s (0.02 µm) 120 mm/s (0.01 µm)	3,000 mm/s (*1)
  		Minimum phase difference:80 ns	Minimum phase difference:38 ns	Minimum phase difference:38 ns	Max 7.5 MHz
  Alarm		High-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 length	300 mm
  	Bending radius	Static : 10 mm
  Output cable length		15 m Max. (*2) (to the electronic control section)			15m Max. (*1)(*2)
  Power supply (*3)		+5 V (+10%/-5%)	+5 V (±5 %)
  Power consumption		200 mA (no load) 250 mA (with 120 Ω termination)	290 mA (no load) 350 mA (with 120 Ω termination)		250 mA (no load, with 120 Ω termination)
  Vibration resistance		100 m/s2 (50 to 2,000 Hz)
  Impact resistance		200 ｍ/s2
  (*1) Max. response speed become limited by output cable length (the part beyond the interface box).
  Cable length (m)		Max. response speed (mm/s)
  3		3,000
  9		2,330
  15		1,660
  (*2）A power supply line longer than 10 m is incompatible with EN61000-6-2. Take surge protection measures upon use. (*3）Satisfy the required specifications at the connector input section.