ABB PSTX Series Installation And Commissioning Manual page 97

7.15 Fieldbus
PSTX has 1 Anybus port, 1 Fieldbus plug adaptor port
(FBPA), and 1 modbus RTU port. You can use only 1
bus at a time: the user cannot connect the Softstarter to
multiple Fieldbuses.
The port used for modbus RTU is a multifunction port
that you can use to connect an Extension IO module. If
an Extension IO module is necesssary you cannot use
the port for modbus RTU. Use an Anybus modbus RTU
module instead.
In the IP-based Fieldbuses, such as modbus TCP, the
user must set IP address, gateway, subnet mask and
DHCP client.
Fieldbus type
When you use Fieldbus communication, select the
present type of Fieldbus:
• Modbus-TCP
• Modbus-RTU
• DeviceNet
• Profibus
• EtherNet/IP
• Profinet
INFORMATION
If there is no message passed between the
PSTX Softstarter and the Anybus, Fieldbus
plug, Modbus RTU master for more than
100ms, the PSTX Softstarter will trip on fieldbus
communication failure protection (P1E00) and
with the default configuration, the motor will be
stopped.
INFORMATION
If the fieldbus communication system is setup in
such a way that commands/requests are not
continuously passed between the PLC and
Softstarter, this protection function should be
disabled. Set parameter 19.4 (Fieldbus failure op)
to "Off".
Fieldbus control
If you use the Softstarter with Fieldbus communication,
set the Fieldbus interface to ON before it can take action
Fieldbus address
If you use the Softstarter with Fieldbus communication,
set a Fieldbus address for the Softstarter. Select a
suitable and unoccupied number as the address.
WARNING
The motor can start unexpectedly if there is a
start signal present during 1 of the actions below.
• Changing from 1 type of control to another (Fieldbus
control / hardwire control).
• Remember that when Fieldbus auto disable is active,
this change can occur automatically.
• Re-programming of the programmable inputs.
• Reset all Settings (sets programmable input to
Enable).
Fieldbus failure operation
See chapter 7.17.21 Fieldbus failure protection.
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