INCREMENTAL ENCODER MyInc - MEYER Industrie-Electronic ...

12
GENERAL/OVERVIEW
General
Pulse frequency: The required pulse frequency can be calculated.
This is based on the number of pulses
per turn (ppr) and the speed (rpm). The max.
pulse frequency is listed for each encoder.
Usually it is 300 kHz. Meyle also offers high
resolution encoders with a pulse frequency
of up to 800 kHz.
This diagram can be used for the
most common resolutions as a quick
guide:
Outputs and voltage supplies
(overview):
required pulse frequency [kHz]
350
300
250
200
150
100
Meyer Industrie-Electronic GmbH – MEYLE
Carl-Bosch-Straße 8
49525 Lengerich/Germany
5000 ppr
Tel.: +49 54 81-93 85-0
Fax: +49 54 81-93 85-12
Example
of how to calculate the required pulse frequency
fmax: Given: Speed n= 3000 min-1 Resolution of the encoder
R = 1000 ppr
f max = n x R
60
The required pulse frequency is 50 kHz. Now
you can compare this result with the data of
the encoder you would like to choose.
50
speed [min –1 0 2000 4000 6000 8000 10000 120000
]
Meyle offers a wide range of possible outputs and voltage supplies for any application.
Output Inverted signals Voltage supply
RS 422 Yes 5 V DC
RS 422 Yes 10 ... 30 V DC or 5 ... 30 V DC
Push Pull output No 10 ... 30 V DC or 5 ... 30 V DC
Push Pull output Yes 10 ... 30 V DC or 5 ... 30 V DC
Sine wave voltage output Yes 5 V DC
Sine wave voltage output Yes 10 ... 30 VDC
If the encoder is used in an environment with
strong electrical noise and long cables we
highly recommend the use of inverted
signals.
Sensor outputs: The sensor outputs are used if the distance
from the encoder to the control unit is very
long and the voltage supply at the encoder
could drop due to this long distance.
The input impedance of the sensor inputs
(Controller) is very high, and the voltage drop
2500 ppr
on the sensor output line is almost zero. Due
to this it is possible to detect the actual
supply voltage of the encoder (e.g. 4,2 V
instead of 5 V). Based on this information the
controller will increase the voltage supply to
e.g. 5,8 V.
Internet: www.meyle.de
E-Mail: sales@meyle.de
1000 ppr
500 ppr
250 ppr