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NRR 2-52, NRR 2-53, URB 55 - Installation & Operating Manual -
850646-00
Connecting the URB 55
Ports and sockets on the back of the unit
A
C
D
B
(L-)
(L-)
Fig. 15
A
1 x 3-pole connector for 24 V DC supply voltage
B
2 x Ethernet ports 10/100 Mbit switched (Modbus TCP/IP)
C
1 x USB host port (versions 2.0 and 1.1) for USB sticks with FAT32/FAT or exFAT file format
D
1 x slot for SD card with FAT32 file format (for service purposes) *
* SDHC memory cards are not supported.
Connection for 24 V DC supply voltage - pin assignment
Connector
Socket
Fig. 16
Use a SELV (Separated Extra Low Voltage) power supply unit for connecting the supply voltage.
To connect the supply voltage to the supplied 3-pole connector, use a cable with a max. con-
ductor size of 2.5 mm
2
.
Pin assignment of the data line between the URB 55 and the NRR 2-52, NRR 2-53
9
9
1
1
Pin 2 = Data_L >> NRR 2-52, NRR 2-53 = terminal 12
Pin 7 = Data_H >> NRR 2-52, NRR 2-53 = terminal 11
Fig. 17
