MECHANICAL

• Rugged and heavy PROFILE made of anodized aluminium. Dimensions  39x23 mm.
• Elastic COUPLING for misalignment compensation and

self-correction of mechanical hysteresis. Backlash error <0.2 μm.

• SEALING LIPS for the protection of the grating, made of special elastomer resistant to oil and wearing.
• READER HEAD, consisting of tie rod and reading block, with fully-protected place for electronic boards.
• READING BLOCK sliding through ball bearings.
• Die-cast TIE ROD, with nickel surface treatment.
• Stainless steel GRATING dimensions 18x0.305 mm in a single piece. The support maintains the grating in its position leaving it free to expand.
• Elastomeric GASKETS which allow to reproduce the full protection in mechanical joints (in case of disassembling).
• Full possibility to disassemble and reassemble it.
• Possibility of direct service.

ELECTRICAL

• Reading device with high-efficiency light emitter and single-field photodiode.
• A and B output signals with phase displacement of 90° (electrical).
• Reference indexes at constant step, in central position or in different positions at request.
• CABLE:
  • 8-wires shielded armored cable Æ = 6.1 mm.
  • Conductors section: power supply 0.35 mm2; signals 0.14 mm2. GVS 400 scale is normally supplied with armored cable.

PVC, PUR, ultraflex or tuboflex cables available on request.

PUR cable is suitable for continuous movements, respecting a minimum bending radius of 80 mm.

Cod. GVS 400

T

Measuring support

Linear thermal expansion coefficient

stainless steel grating

10.6 x 10-6 °C-1

Reference indexes (I0)

No cod. = without reference indexes

P = constant step (every 30 mm)

Z = in required positions

Resolution (µm)

100

50

10

5

2

1

0.5

0.2

0.1

Max. traversing speed (m/min) LINE DRIVER (VL) output

120

60

30

Max. traversing speed (m/min) TRANSISTOR (VQ) output

120

80

40

16

8

4

NA

NA

Accuracy grade

± 5 μm *

Measuring length ML in mm

in modular version for measuring lengths over 6500 mm or for lower measuring lengths on request

Max. acceleration

30 m/s2

Required moving force

£ 4 N

Vibration resistance (EN 60068-2-6)

100 m/s2          [55 ¸ 2000 Hz]

Shock resistance (EN 60068-2-27)

150 m/s2          [11 ms]

Protection class (EN 60529)

IP 54 standard                IP 64 pressurized

Operating temperature

0 °C ¸ 50 °C

Storage temperature

-20 °C ¸ 70 °C

Relative humidity

20% ¸ 80% (not condensed)

Reading block sliding

by ball bearings  ¥

Power supply

5 Vdc ± 5%  or  10 ÷ 28 Vdc ± 5%

Current consumption

140 mAMAX (with 5 V and R = 120 W)

A, B and I0 output signals

LINE DRIVER TRANSISTOR

Max. cable length

100 m (LINE DRIVER)    50 m (TRANSISTOR)

Electrical connections

see related table

Electrical protections

inversion of polarity and short circuits

Weight

400 g + 1300 g/m