BL55-RU
(E)
6-1
6. Main Specifications
Item
Performance / Functions
A/B signal output type
Analog output type
Scale length
Measuring length (mm) 70, 120, 170, 220, 270, 320, 370, 420, 470, 520, 570, 620, 720, 770, 820,
870, 920, 1020
Mounting hole pitch
Measuring length
+
118 mm
Scale overall length
Measuring length
+
137 mm
Scale accuracy
±
2.5
µ
m (70 to 320 mm),
±
4.5
µ
m (370 mm or higher) (Note 1)
(at 20
°
C)
(1 m or higher is accuracy per m)
Linearity
±
2.5
µ
m (370 mm or more) (Note 2)
Return error
0.1
µ
m or less
Repeatability
0.1
µ
m or less
Output signal
Differential (compliant with EIA-422)
Differential (reference point output
specifications only compliant with
EIA-422)
Output resolution
Output format F : 0.1/0.05
µ
m
0.4
µ
m (1 Vp-p)
Output format G : 0.02/0.01
µ
m
(selectable)
Maximum response speed
Output format F
3000 mm/s (Note 3)
: 1500 mm/s (0.1
µ
m)
Max.: 7.5 MHz
: 650 mm/s (0.05
µ
m)
Minimum phase difference: 38 ns
Output format G
: 300 mm/s (0.02
µ
m)
: 120 mm/s (0.01
µ
m)
Minimum phase difference: 38 ns
Alarms
Max. response speed exceeded or
None
Signal level error;
When one of these states occurs,
the output signal becomes high impedance.
Output cable length
15 m max. (Note 4)
15 m max. (Note 3) (Note 4)
(to the trailing electronic control section)
Grating pitch
1.6
µ
m
Signal pitch
0.4
µ
m
Temperature expansion coefficient
8
×
10
−
6
/
°
C
Protection grade
IP53 or equivalent
Interface unit: IP64 or equivalent
(when air is injected: IP64 or equivalent)
Vibration resistance
100 m/s
2
(50 to 2000 Hz)
Impact resistance
200 m/s
2
Reference point position
Any selected point (However, positioning is not allowed within 4 mm of the
right and left measuring length edges.)
Reference point accuracy (at 20
°
C)
±
0.4
µ
m (varies depending on machine traveling)
Reference point output signal
Unidirectional synchronous reference point
(position and detection direction designed)
Head cable
Cable length
1 m (Note 5)
Bending radius
Static: 30 mm Moving: 100 mm
Light source
Semiconductor laser Maximum output: 6 mW Wavelength: 790 nm 2
lasers
Detection system
Diffraction grating scanning system
Power supply
+
5 V DC
±
5 %
Consumption current
450 mA (no load)/600 mA (when using 120
Ω
terminal)
Operating temperature range
0 to
+
40
°
C (no condensation)
Storage temperature range
−
10 to
+
50
°
C
Radiation power
JIS class 1
DHHS class 1
Summary of Contents for BL55-RU
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