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3.5 Encoders
3.5.1 Prerequisites
Current
consumption of
encoders
3.5.2 Position Encoder
LEs with power
inputs (11 µA
)
PP
Input
Id. Nr. of LEs with 11-µA
LE 426 PB
311 999-xx, 313 526-xx, 317 349-xx, 318 177-xx
LE 426 CB
312 002-xx, 313 525-xx
December 2001
HEIDENHAIN contouring controls are designed for use with incremental linear
and angular encoders as measuring systems. The 1 V
are interpolated by a factor of 1024.
Encoders with one or more reference marks are permissible. HEIDENHAIN
recommends the use of encoders with distance-coded reference marks
because they greatly reduce the traverse distance required to establish the
absolute position.
In addition, depending on the LE, encoders with EnDat interface can be
connected:
n
LE 426 M, LE 430 M with EPROMs: only certain inputs
n
LE 426 M, LE 430 M with flash EPROMs:
all speed encoder inputs, 6 position encoder inputs
Please use only HEIDENHAIN encoder cables, connectors and couplings. For
maximum cable lengths, see "Cable Overview" at the end of this chapter.
Maximum current consumption:
n
200 mA per speed encoder input
n
100 mA per position encoder input
n
300 mA per EnDat encoder input
PP
Encoders
input
and 11 µA
signals
PP
PP
Max. input
frequency
50 kHz
50 kHz
3 – 31
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