OBID i-
scan
®
Installation
ID ISC.LRU3000
FEIG ELECTRONIC GmbH
Page 40 of 52
LRU3000 - Manual.doc
E N G L I S H
9.3 Digital
Inputs
X5
The optocouplers on Terminal X5 are galvanically isolated from the Reader electronics and must
therefore be externally supplied.
Fig. 11 Optocoupler pin-outs IN1 – IN5
Fig. 12 Internal and possible external wiring of the optocouplers
Optocoupler input (X5/1-5):
The input LED associated with the optocoupler is connected internally to a series resistor of 500
Ω
.
For supply voltages of greater than 10V the input current must be limited to max. 20 mA by means
of an additional series resistor (see Table 11).
Table 11 shows the necessary external resistors for various external voltages U
ext
.
IN1+
IN2+
IN3+
IN4+
IN5+
OU
T1-C
OU
T2-C
REL1-NO
REL2-NO
REL3-NO
IN
1-
IN
2-
IN
3-
IN
4-
IN
5-
OUT1
-E
OUT2
-E
REL1-COM
REL2-COM
REL3-COM
+
IN1..5
Rint
Rext
-
Uext
