HEIDENHAIN ND 920 - Manual (Page 61)

61
Signal level Low High
Inputs –0.5 V
≤
U
≤
0.9 V I
≤
6 mA 3.9 V
≤
U
≤
15 V
Pins 2, 3, 4
Switching Inputs and Outputs X41 (EXT)
(Option with ND 920/ND 960)
Pin layout
Pin Function
10 0V for switching ranges
23, 24, 25 +24 Vdc for switching ranges
11 ND ready for operation
14 Display value outside switching range 0
15 Display value outside switching range 1
16 Display value outside switching range 2
17 Display value outside switching range 3
18 Display value outside switching range 4
19 Display value outside switching range 5
20 Display value outside switching range 6
21 Display value outside switching range 7
1 0 V (internal)
2 Reset X axis display to zero
3 Reset Y axis display to zero
4 Reset Z axis display to zero (ND960 only)
8 Pulse: output measured value
9 Contact: output measured value
5, 6, 7, 12, Do not assign
13, 22
Inputs
Outputs
Switching Inputs and Outputs
The outputs at connection X41 are metalically isolated
from the device electronics by means of optocouplers.
• Danger for internal components!
Voltage sources for external circuitry must conform
to the recommendations in EN 50 178 for
low-voltage electrical separation.
• Connect inductive loads only with a quenching
diode parallel to the inductance.
• Use only shielded cable!
Connect the shield to the connector housing.
• Interface X41 complies with the recommendations
in EN 50 178 for separation from line power.