ABB 520ADD02 Connection And Settings Manual

RTU520 product line
I/O adapter 520ADD02
Connections and settings
Application, characteristics and technical data have to be taken
from the hardware data sheet:
520ADD02 data sheet 1KGT 150 871
Operation
The I/O adapter 520ADD02 is used to connect more than 16
RTU520 I/O modules to an I/O bus with RS485 or fiber optic
connection in RTU520 or RTU540.
The adapter is also used to extend the WRB I/O bus for decen-
tralized I/O applications up to 2 km distance and if distances of
more than 30 cm between the I/O adapters are required.
In addition the I/O adapter 520ADD02 is used as a stand-alone
module to connect RTU560 I/O modules (e. g. 23BE40, 23BE50,
23BA40) to an RTU540.
Processing Functions
The I/O adapter is connected to the WRB I/O bus (wired OR
bus) and generates the addresses for the connected I/O mod-
ules within the I/O assembly automatically. The I/O adapter is al-
ways the last adapter unit within the virtual I/O rack 1.
The adapter converts the WRB I/O bus to the SPB I/O bus (serial
peripheral bus) with electrical RS485 or fiber optical connection.
The module is available in two versions (rubrics):
– R0001: RS485
– R0002: RS485 and glass fiber optical, 840 nm
Settings
The jumper S1 is used to change the start address of the first I/
O module connected to the 520ADD02. In position 2-3 an offset
is calculated to the start address. So it is possible to add up to 8
I/O modules to the previous I/O assembly (see Fig. 8 and Fig. 9).
In RTUtil500 configuration the parameter "8/8 addressing mode"
has to be selected.
If max. 4 I/O modules are connected to the previous I/O assem-
bly the jumper S1 is in position 1-2 (see Fig. 10). Thus no off-
set is added. This configuration is only possible with RTU540. In
the RTUtil500 configuration the parameter "4/4/4/4 addressing
mode" has to be selected at the I/O assembly.
Parameter name Default
Addressing mode 8/8
– 8/8: upto 8 I/O modules per I/O assembly, maximum 2 I/O assemblies per
virtual I/O rack
– 4/4/4/4: upto 4 I/O modules per I/O assembly, maximum 4 I/O assemblies
per virtual I/O rack (not used with RTU520)
Signaling
The module has two green LEDs for signaling the activity on the
I/O bus.
Connections
The RTU520 I/O modules are connected to the WRB I/O bus via
connector X1. The previous adapter or a communication module
is connected at X2 via the WRB I/O bus. (see Fig. 2 and Fig. 4)
The RS485 SPB I/O bus is available on connector X3. In parallel
the fiber optical output can be used (see notice below).
RS485 SPB I/O bus connector X3
X3-1
TB
The usage of the adapter 520ADD02 within an RTU520 DIN rail
configuration is shown in Fig. 11.
The usage of the adapter 520ADD02 within an RTU540 DIN rail
configuration is shown in Fig. 12 and Fig. 13.
A D V I C E
To prevent damage on the connected modules de-energize
the system before plugging or unplugging the I/O bus con-
nectors.
Parameter location
I/O assembly
X3-2 X3-3
TA Shield