GESTRA NRR 2-52 - Connecting the URB 55; Ports and Sockets on the Back of the Unit; Connection for 24 V DC Supply Voltage - Pin Assignment; Pin Assignment of Data Line between URB 55 and NRR 2-52, NRR 2-53

28 NRR 2-52, NRR 2-53, URB 55 - USA- Installation & Operating Manual - 850698-00
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 SocketFig. 16
Use a SELV (Safety Extra Low Voltage) power supply unit for connecting the supply vol-
tage. To connect the supply voltage to the supplied 3-pole connector, use a cable with a
max. wire size of AWG14 (2.5 mm
2
).
Pin assignment of data line between URB 55 and 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