Page 7
System Design, Connection Options
confocalDT 2421 / 2422
Screw Terminals
Pin Description Notes
U/I out
GND
Shield
Analog Out
U/I out
Voltage output
0 ... 5 V; 0 ... 10 V;
R
i
approx. 50 Ohm; 5.5 V / 10.9 V in the event of an
error, outside of measuring range
Current output
4 ... 20 mA; R
L
≤ 500 Ohm; 23.7 mA in the event of
an error, outside of measuring range
GND Ground analog output Electrically connected to supply
+Sync/Trig
-Sync/Trig
Input/output synchroni-
zation, input triggering
RS422 level (EIA422)
+ Sync/Trig
- Sync/Trig
Digital I/O
GND
Shield
TrigIn
GND
Error 1
GND
Shield
Error 2
GND
TrigIn Input triggering
TTL or HTL level
TTL: Low ≤ 0.8 V, High ≥ 2 V
HTL: Low ≤ 3 V, High ≥ 8 V
Error 1 / 2 Error outputs
NPN, PNP or Push-Pull
I
max
= 100 mA, U
H max
= 30 V
GND Reference ground
All GND conductors are interconnected with one
another and to operating voltage ground.
24 VDC Operating voltage ± 15%, I
max
< 1 A
24 VDC
GND
Shield
Power
GND
Operating voltage
ground
GND is electrically connected to GND of switching
outputs, synchronization, analog and encoder input
Shield Shields for relevant output/input, plug housing
The plug-in screw terminals are designed for an optical fiber cross-section of 0.14 mm² to 1.5 mm².
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