MECHANICAL

• Rugged and heavy PROFILE made of anodized aluminium. Dimensions 40x24 mm.
• Elastic COUPLING for misalignment compensation and

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

• Non-extendible SEALING LIPS along the sliding side of the reader head, fixed at the lateral ends.
• 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.
• Absolute GLASS GRATING placed in the scale housing.
• 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 an infra-red light emitter and receiving photodiodes.
• Option: A and B 1 Vpp output signals with phase displacement of 90° (electrical).
• Serial protocol SSI – BiSS C (unidirectional).
• Electrical protection against polarity inversion and short circuits on output ports.
• CABLE:
  • Shielded twisted pair for digital signals (SSI – BiSS).
  • The cable is suitable for continuous movements. SERIAL OUTPUT VERSION
  • 6-wire shielded cable Æ = 7 mm, PVC external sheath, with low

friction coefficient, oil resistant.

• Conductors section: power supply 0.25 mm2; signals 0.25 mm2.

-The cable’s bending radius should not be lower than 70 mm.

ANALOG + SERIAL OUTPUT VERSION

• 10-wire shielded cable Æ = 7.1 mm, PUR external sheath.
• Conductors section: power supply 0.35 mm2; signals 0.10 mm2.

-The cable’s bending radius should not be lower than 80 mm.

Cod. GVS 608

T

Measuring support

Grating pitch

Linear thermal expansion coefficient

glass scale

20 μm                             P

8 x 10-6 °C-1

Incremental signal

sine wave 1 Vpp (optional)

Resolution 1 Vpp

up to 0.1 μm *

Serial interface

SSI – BiSS C (unidirectional)

Resolution absolute measure

1 μm   –    0.1 μm

Accuracy grade

± 3 μm ** standard version

± 1 μm ** high-accuracy version

Measuring length ML in mm

70, 120, 170, 220, 270, 320, 370, 420,

470, 520, 570, 620, 720, 770, 820, 920,

1020, 1140, 1240, 1340, 1440, 1540,

1640, 1740, 1840, 2040, 2240, 2440,

2640, 2840, 3040, 3240MAX

Max. traversing speed

120 m/min

Max. acceleration

30 m/s2

Required moving force

£ 2.5 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%

Current consumption

340 mAMAX (with R = 120 W)

Max. cable length

20 m ***

Electrical connections

see related table

Connector

inside the transducer

Electrical protections

inversion of polarity and short circuits

Weight

435 g + 1290 g/m