Speed Encoder (Le 426 Pb/M, Le 430 Pa/M) - HEIDENHAIN TNC 426 PB/M Technical Manual

3.5.3 Speed Encoder (LE 426 PB/M, LE 430 PA/M)

Maximum input
frequency
Inputs with EnDat
interface
December 2001
Maximum input frequency of speed encoder inputs:
Input
X15 to X20
X62 to X64
X60
Note
Keep in mind the line count of the speed encoder when choosing the
spindle motor:
x = line count of the speed encoder
f = maximum input frequency
n = maximum spindle speed
Example:
f = 410 kHz; n = 24 000 rpm
x =
EnDat interface is available at the following speed encoder inputs:
LE
LE 426 M / 12 000 rpm with EPROMs
LE 426 M / 30 000 rpm with EPROMs
LE 430 M/6 axes with EPROMs
LE 430 M/9 axes with EPROMs
LE 426 M / 12 000 rpm with flash EPROMs X15 to X20
LE 426 M / 30 000 rpm with flash EPROMs X15 to X19, X60
LE 430 M/6 axes with flash EPROMs
LE 430 M/9 axes with flash EPROMs
Encoders
Max. input frequency
350 kHz
410 kHz
to NC software 280 470-xx: 350 kHz
⋅ ⋅
f 60 1000
------------------------------ -
x =
n
⋅ ⋅
410 60 1000
≈
-------------------------------------- -
1024
24000
Input with EnDat interface
X19, X20
X19, X60
X19, X20
X15 to X20, X62 to X64, X60
X15 to X20, X60
X15 to X20, X62 to X64, X60
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