Electrical connection
Leuze electronic
DCR 55
11
5
Electrical connection
CAUTION
Safety notices
Ä
Before connecting the device, be sure that the supply voltage agrees with the value printed
on the name plate.
Ä
Connection of the device and maintenance work while under voltage must only be carried
out by a qualified electrician.
Ä
The power supply unit for the generation of the supply voltage for the device and the corre-
sponding connection units must have a secure electrical insulation according to IEC 60742
(PELV). For UL applications: only for use in class 2 circuits according to NEC.
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If faults cannot be cleared, the device should be switched off and protected against acciden-
tal use.
5.1
Voltage supply
The 2D-code reader is designed for connection to a 5 V supply voltage.
• The input power requires a
Listed Class 2/LPS
power supply that is rated for 5 V DC, min 420 mA, and
50 °C.
• Connect the output switch only to a
Listed Class 2/LPS
power supply that is rated 5 V DC to 24 V DC,
min 20 mA, 50 °C.
The 2D-code reader comes equipped with one of the following connector types:
• 6-pin open-ended flying lead connector
• 4-pin USB 2.0 Standard-A connector
• 8-pin M12 cable connector
The 6-pin open-ended flying lead connector can be used with the MA-CR Modular adapter unit. The MA-
CR Modular adapter unit (interface device-to-host to connect to a PC for evaluation, 50128204) with spring
terminals, Molex connector, and D-SUB 9-pin socket is available as an accessory (see chapter 13.2 "Ac-
cessories").
• The 6-pin open-ended flying lead connector of the device can be connected to the spring terminal block
of the MA-CR Modular adapter unit. Connection to the PC is provided via the D-SUB 9-pin socket of the
MA-CR Modular adapter unit, using an RS 232 interconnection cable.
• With the MA-CR Modular adapter unit, the voltage supply of 10 … 30 V DC can be fed in via spring ter-
minals or, alternatively, 5 V DC can be fed in via a micro USB connector.
5.2
Pin assignment
6-pin open-ended flying lead connector
Tab. 5.1:
RS 232 cable with open cable ends
Wire
Assignment
Description
Red
+5V DC
Operating voltage 5V DC
IN
Violet
GND
Operating voltage 0V DC / reference ground
IN
Black
SW OUT
Switching output
OUT
Orange
SW IN
Switching input
IN
White
RS 232 RxD
Serial interface
IN
Green
RS 232 TxD
Serial interface
OUT
