July 02 Mounting and Electrical Installation TNC 370 D 3–13
3.7.3 Measuring System Inputs
HEIDENHAIN TNC contouring controls are designed for use with incremental linear and angular
encoders as measuring systems.
However, HEIDENHAIN recommends using encoders with distance-coded reference marks because
they significantly reduce the traverse distance required to establish the absolute position.
Maximum current load per encoder input: 200 mA
Use only original HEIDENHAIN encoder cables, connectors and couplings. For maximum cable
lengths see “Cable Overview.”
Encoder for Position with 1 V
SS
Maximum input frequency: 350 kHz (via MP 115.1 switchable to 50 kHz)
X1, X2, X3, X4 and X6 (Spindle) Encoder (1 V
PP
) (via MP 115.0 switchable to 11µA)
Logic unit Encoder cable
D-sub
terminal
(male) 15-pin
Assignment D-sub
connector
(female) 15-pin
1 + 5 V (U
P
) 1 Brown/Green
2 0 V (U
N
) 2 White/Green
3 A+ 3 Brown
4 A– 4 Green
5 0 V 5
6 B+ 6 Gray
7 B– 7 Pink
8 0 V 8
9 + 5 V 9 Blue
10 R+ 10 Red
11 0 V 11 White
12 R– 12 Black
13 0 V 13
14 Do not use 14 Violet
15 Do not use 15
Housing External shield Housing External shield
For the spindle position, HEIDENHAIN recommends the ROD 486 with 1024 or 2048 lines.
The 1 V
PP
signals are interpolated by a factor of 1024.
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