Direct spindle encoder Siemens

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RS422 (TTL) incremental encoder

The optoelectronic incremental TTL encoders are tailored for the use as direct spindle encoders in conjunction with the SINUMERIK 808D CNCs.

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The direct incremental spindle encoder features a Synchro flange and can be attached to the machine with 3 clamp straps and a spring disk coupling.

The encoder supply voltage of 5 V DC is provided by the SINUMERIK 808D CNC.

The direct incremental spindle encoder delivers 1024 pulses per revolution which are multiplied by the factor of 4 internally to reach the precision level suitable for standard lathes and milling machines.

Incremental encoders operate on the principle of optoelectronic scanning of dividing disks with the transmitted light principle. With an appropriate arrangement of the line pattern on the dividing disk connected to the shaft and the fixed aperture, the optoelectronic elements provide two trace signals A and B at 90° to one another, as well as a reference signal R. The encoder electronics amplify these signals and convert them into different output levels.

Чертеж



RS422 (TTL) incremental encoder

Spring disk coupling, d1 = d2 = 6 mm

Технические данные



Product name

RS422 (TTL)
incremental encoder for spindle

 

6FX2001-2EB02

Operating voltage Up
on encoder

5 V DC ± 10 %

Scanning frequency, max.

300 kHz

No-load current
consumption, max.

150 mA

Signal level

RS422 (TTL)

Outputs protected against
short-circuit to 0 V

Yes

Switching time (10 ... 90 %)
(1 m cable and recommended
input circuit)

Rise/fall time
t+/t- ≤ 50 ns

Phase angle, signal A to B
Edge spacing, min.

90°

  • At 300 kHz

≥ 0.45 μs

Cable length to downstream
electronics, max.1)

100 m

LED failure monitoring

High-resistance driver

Resolution, max.

1024 S/R

Accuracy
(in angular seconds)

± 18 mech. × 3600/
number of signals/revolution z

Speed, max.

 
  • Electrical

(18 × 106 rpm)/
number of signals/revolution

  • Mechanical

12000 rpm

Friction torque (at 20 °C)

 ≤ 0.01 Nm

Starting torque (at 20 °C)

 ≤ 0.01 Nm

Shaft loading capacity

 
  • n ≤ 6000 rpm
 
  • Axial

40 N

  • Radial at shaft extension

60 N

  • n > 6000 rpm
 
  • Axial

10 N

  • Radial at shaft extension

20 N

Shaft diameter

6 mm

Shaft length

10 mm

Angular acceleration, max.

105 rad/s2

Moment of inertia of rotor

1.45 × 10-6 kgm2

Vibration (55 ... 2000 Hz) to EN 60068-2-6

≤ 300 m/s2

Shock to EN 60068-2-27

 
  • 2 ms

≤ 2000 m/s2

  • 6 ms

≤ 1000 m/s2

Degree of protection to EN 60529 (IEC 60529)

 
  • Without shaft input

IP67

  • With shaft input

IP64

Ambient temperature

 

Operation

 
  • Flange outlet 
 
  • At Up = 5 V ± 10 %

-40 ... +100 °C

Weight, approx.

0.3 kg

EMC

Tested in accordance with the guidelines for electromagnetic compatibility 89/336/EEC and the regulations of the EMC guidelines (applicable basic standards)

Approvals, according to

CE, cULus



S/R = Signals/Revolution

1) With recommended cable and input circuitry of the downstream electronics, observe max. permissible cable length of module to be evaluated.

Product name

Spring disk
coupling

 

6FX2001-7KF10

Transmission torque, max.

0.8 Nm

Shaft diameter

6 mm both ends

Center offset of shafts, max.

0.4 mm

Axial offset

± 0.4 mm

Angular displacement
of shafts, max.

3°

Torsional rigidity

150 Nm/rad

Lateral spring stiffness

6 N/mm

Moment of inertia

19 gcm2

Speed, max.

12000 rpm

Ambient temperature

 
  • Operation

-40 ... +150 °C

Weight, approx.

16 g