ABB PSTX30 Installation And Commissioning Manual page 88

7.13 Fieldbus
PSTX has one Anybus port, one fieldbus plug adaptor
port (FBPA), and one Modbus RTU port. Only one bus at
the time can be used. i.e. the user cannot connect the
softstarter to multiple fieldbuses.
The port used for Modbus RTU is a multifunction port that
can also be used for connecting an Extension IO module.
If an Extension IO module is required it is not possible to
use the port for Modbus RTU, use an Anybus Modbus
RTU module instead.
In the IP-based fieldbuses, such as Modbus TCP, the user
have to specify IP address, gateway, subnet mask and
DHCP client.
Fieldbus type
When fieldbus communication is used, the present type of
fieldbus must be selected.The following fieldbus types are
available in the softstarter:
• Modbus-TCP
• Modbus-RTU
• DeviceNet
• Profibus
7 • EtherNet/IP
Fieldbus control
If the softstarter is going to be used with fieldbus
communication, the fieldbus interface must be enabled
before any action can be taken.
Fieldbus address
If the softstarter is going to be used with fieldbus
communication, set a fieldbus address for the softstarter.
Select a suitable, and unoccupied number as the address.
CAUTION
The motor may start unexpectedly if
there is a start signal present when
performing any of the actions listed
below.
• Switching from one type of control to another (fieldbus
control / hardwire control).
• Remember that when Fieldbus auto disable is active,
this switch can be done automatically.
• Re-programming of the programmable inputs.
• Reset all Settings (programmable input set to Enable).
Fieldbus auto disable
With fieldbus auto enabled, the control of the softstarter
will automatically switch over from the fieldbus to the hard
wire inputs, if the fieldbus malfunctions for instance due
to power loss or broken cable. When the fieldbus starts
working again, the control is automatically switched back
to the fieldbus.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com