Baumuller b maXX BM3000 - Encoder

Configuration
Parameter manual b maXX BM3000
Document no.: 5.12001.07 Baumüller Nürnberg GmbH
162
of 820
4.4
4.4.6 Encoder
This software module manages the evaluation and monitoring of the encoder signals.
The following encoder types can be evaluated:
Maximum input frequency and maximum speed
The maximum input frequency is related to the electrical input signal. This value has ef-
fect on the maximum evaluatable speed of the drive, which is possible depending on the
number of pulses.
Incremental encoder:
Example: Sine-Cosine encoder with a number of pulses 1024:
Resolver
The theoretical maximum speed is limited due to the excitation frequency (7.8125 kHz)
and the number of pole pairs at a resolver.
Example: Resolver with 1 pole pair
Encoder type Supply Signal Maximum input
frequency
Resolver Excitation fre-
quency 7.8125 kHz
Transmission ratio
0.5
-
Square-wave incre-
mental encoder
5 V RS422 (TTL) 250 kHz
Sine-Cosine encoder 5 V ~ 1 Vpp 250 kHz
Sine-Cosine encoder
with Hiperface
®
10 V ~ 1 Vpp 250 kHz
Sine-Cosine encoder
with EnDat
®
5 V ~ 1 Vpp 250 kHz
Sine-Cosine encoder
with SSI interface
5 V ~ 1 Vpp 250 kHz
n
max,theoretical
min
-1

f
input
60
Number of pulses
------------------------------------------=
n
max,theoretical
min
-1

250 kHz 60
1024
------------------------------- 14648 min
-1
==
n
max,theoretical
min
-1

f
excitation
60
20 Number of pole pairs Resolver
------------------------------------------------------------------------------------
7,8125 kHz 60
20 Number of pole pairs Resolver
------------------------------------------------------------------------------------==
n
max,theoretical
min
-1

7,8125 kHz 60
20 1
-------------------------------------- 23437 min
-1
==