Magnetic_Encoder0 pages

Document # EMAGC-1

EMIX23 Magnetic Encoder
for Velmex Linear
Assemblies (Part #
ENCMAGL1-xx)

12-1-06

Magnetic linear encoder
Connections

1 µm resolution
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Unterminated Cable Bendix PTO 6A-10-6P
(For Metronics DROs)
Standard

With periodic index pulse
Differential 5 V-TTL line driver outputs
Resolution 0.001 mm (using 4 times edge multiplier)
Repeating accuracy +/- 0.001 mm
Small sensor with integrated translator

Function
0V (GND)
5VDC VDC in
Channel A
Channel B
Channel Z
Channel A’
Channel B’
Channel Z’
Shield

Technical Specifications 5V TTL output version

Color
White
Brown
Green
Yellow
Black
Violet
Orange
Gray
PE

Pin no.
D
C
A
B
F
N/C
N/C
N/C
E

SENSOR electrical data
Measuring principle
Signal output
Resolution at 4 edge triggering
Repeat accuracy
Accuracy of the system in µm at 20 ° C
Max. permitted distance to the tape
Power supply
Tolerance of power supply

Incremental
Speed proportional
0.001 mm
+/- 0.001 mm
+/- 25 + 20 x L (L = measuring length in meters)
0.8 mm
5 VDC
5 VDC: +/- 2.5 %, remaining ripple < 50 mV

Consumption

5 VDC: max. 200 mA

Translator circuit intern/extern
Output levels
Output channels
Output characteristics
Max. output frequency per channel

intern
5 VDC - TTL Line Driver
A, A’, B, B’, Z, Z’
Push/pull, durable short circuit proof
TTL: 100 KHz at 0.4 m/s resp. 500 KHz at 2.0 m/s

Output current per channel
Max. operating speed
Index pulses
Cable length

20 mA
2.0 m/s
Periodic output of channels Z and Z’

NOTE: A’, B’, Z’ are for differential encoder interfaces. For
single ended interfacing leave A’, B’, Z’ unconnected.

A/B Quadrature Pulse diagram
A

A

5 VDC / 5 V-TTL = 3 m

(10 m max allowable)

Min. bend radius of sensor cable
Operation temperature
Stock temperature
Humidity

60 mm’ s
0... + 50 ° C
-20... + 70 ° C
95 %, not condensing

The channels A and B
are 90 ° phase shifted

B
B

Z
Z

The output of the index pulse
is periodically after 2 mm’s