HEIDENHAIN Length Gauges - Manual (Page 27)

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Mechanical data MT 1271 « TTL
MT 1281 » 1 V
PP
MT 2571 « TTL
MT 2581 » 1 V
PP
MT 1287 » 1 V
PP
MT 2587 » 1 V
PP
Plunger actuation
Position of plunger at rest By cable or measured object
Extended
Pneumatic
Retracted
Measuring standard DIADUR phase grating on Zerodur glass ceramic; grating period 4 µm
System accuracy ± 0.2 µm
Position error per signal period  ± 0.02 µm
Short-range accuracy typically 0.03 µm 0.04 µm 0.03 µm 0.04 µm
Reference mark ≈ 1.7 mm below upper stop
Measuring range 12 mm 25 mm 12 mm 25 mm
Working pressure – 0.9 bar to 1.4 bars
Radial force  0.8 N (mechanically permissible)
Fastening Clamping shank ¬ 8h6
Operating attitude Any; for version without spring and with low gauging force: vertically downward
Vibration 55 Hz to 2 000 Hz
Shock 11 ms
 100 m/s
2
(EN 60 068-2-6)
 1 000 m/s
2
(EN 60 068-2-27)
Operating temperature 10 °C to 40 °C; reference temperature 20 °C
Protection EN 60 529 IP50 IP64 (with sealing air)
Weight without cable 100 g 180 g 110 g 190 g
Electrical data MT 1271
MT 2571 MT 128x
MT 258x
Interface « TTL » 1 V
PP
Integrated interpolation* 5-fold 10-fold –
Signal period 0.4 µm 0.2 µm 2 µm
Mech. permissible traversing speed  30 m/min
Edge separation a at
scanning frequency*/traverse speed
1)
200 kHz  24 m/min
100 kHz  12 m/min
50 kHz  6 m/min
25 kHz  3 m/min
 0.23 µs
 0.48 µs
 0.98 µs
–
–
 0.23 µs
 0.48 µs
 0.98 µs
–
Electrical connection*
(Interface electronics integrated in
connector)
Cable 1.5 m with D-sub connector (male),
15-pin
Cable 1.5 m with
• D-sub connector (male), 15-pin
• M23 connector (male), 12-pin
Cable length  30 m with HEIDENHAIN cable
Voltage supply 5 V DC ± 0.5 V/< 160 mA (without load) 5 V DC ± 0.25 V/< 130 mA
* Please select when ordering
1)
At the corresponding cutoff or scanning frequency