Siemens SINAMICS G110D Operating Instructions Manual page 162

Functions
6.11 Operation in fieldbus systems
Installing and commissioning the CP343-2
To install a SIMATIC S7-300 the procedure is outline below. This procedure is given as an
overview and the Operating Instructions and Installation guidelines for the S7-300 must be
consulted for detailed information.
Load capacity
The load capacity of the AS-i contacts is a maximum of 4A. If this value is exceeded on the
AS-i cable, the CP343-2 must not be "looped into" the AS-i cable but must be connected by
a separate cable (only one pair of CP343-2 terminals used).
Step
Note: Only wire-up the S7-300 with the power switched off! Follow the steps as described in the S7-300 Operating Instruc-
tions when wiring between the power supply and the CPU.
Install the CP343-2 on the S7 standard rail.
Establish the connection through the enclosed bus connect-
or to the backplane bus.
Secure the CP343-2 by the screws in its casing.
Connect the AS-i cable to the terminals on the front con-
nector of the CP343-2
Turn on the power supply for the SIMATIC station and the
AS-i system.
Setting the slave address of the Inverter
This step assumes that the Inverter has been installed and commissioned as previously
described in this manual.
The SINAMICS G110D Inverter has the equivalent of two slave nodes to be identified to the
AS-i network.
The simplest way to set the slave addresses is to allow the AS-i master to poll the network,
once the Inverter has been installed correctly, and it will automatically assign an address to
any slave devices with an address of '0'. '0' is the default slave address assigned to both
slave nodes of the Inverter. One slave node is hidden from the network, when the first slave
nodes is assigned a node address, the second node becomes visible to the network and the
AS-i master will then assign the relevant node address to the second node. The polling is
initiated by pressing the "Set button" on the AS-i master.
162
CAUTION
Explanation/meaning
Slots 4 to 11 are permitted for the CP343-2 in racks 0 to 3.
Contact is made at terminal pairs 17 and 19 or 18 and 20 of
the front connector. Terminals 17 and 19 and terminals 18
and 20 are electrically connected within the CP343-2. The
assignment of the terminal pair and the polarity are indicat-
ed on the front panel of the CP343-2. The second terminal
pair (18/20) is intended for connecting the AS-i power sup-
ply unit or a branch of the AS-i cable. This allows the
CP343-2 to be "looped" into the AS-i cable. The AS-i power
supply unit can, however, be connected to any point on the
AS-i cable.
Operating Instructions, 07/2016, FW V3.63, A5E36768472B AB
SINAMICS G110D