ABB UMC100-FBP, Техническое описание

Страница: 91 / 158

- 91 - UMC100-FBP
Universal Motor Controller
UMC100-FBP
Technical Description
FieldBusPlug / Issue: 03.2012
6 Configuring the Fieldbus Communication
The UMC can be integrated into differ ent fieldbus networks with the help of a FieldBusPlug.
FieldBbusPlugs exist presently for PROFIBUS (PDP22 / PDQ22), DeviceNet(DNP21), Modbus (MRP21)
and CANopen (COP21).
Since the fieldbuses and the various fieldbus master configuration tools are very different no common
integration procedure can be described here. In general the following generic steps are usually necessary:
1. Make the UMC known to the tool e.g. by importing the device description file (GSD, EDS)
2. Create a network and insert nodes like the UMC as required
3. Set the UMC parameters according to your needs (if parameterisation from within the system is required)
4. Make the I/O signals available in your programming tool (e.g. a IEC61131 based tool)
To use the UMC in a fieldbus network the following parameters should be considered.
Setting the Bus Address
The bus address can be adjusted with the help of the UMC LCD panel. The UMC allows an address to be
set between 000 and 255. But there are different limitations depending on the fieldbus in use. Setting the
address to 255 means that the UMC will take over the address from a connected FieldBusPlug.
•
PROFIBUS: 2 ...125
•
DeviceNet: 2-64
•
Modbus: With the bus address you also select the baud rate used by the MRP21 FieldBusPlug.
Check the MRP21 manual about the available options.
•
CANopen: 1-127
Ensure that the chosen bus address is not used twice. If an address is used twice the
whole bus line might go out of operation.
Related Parameter: Bus Address
Address Check when using UMC in Motor Control Centres
If the UMC is used in MCCs the address check can be enabled. This ensures that the bus address in the
FieldBusPlug and the UMC must match before the bus communication can start. This ensures that in the
event of an unintentional permutation of a drawer the bus address stays in place and does not move with
the drawer.
A precondition for this function is the separation of FieldBusPlug and UMC. In MCCs the FieldBusPlug is
usually mounted in the cable chamber whereas the UMC is mounted in the withdrawable unit. This means
that even if the withdrawable is removed the FieldBusPlug stays active, keeps the bus address and can
send an error message (missing device) to the control system.
The following cases can occur:
1. Neither the UMC100 nor the FieldBusPlug contains a valid address (i.e. 255): The UMC does not start to
communicate.
2. Only the UMC100 contains a valid address (i.e. 255): The FieldBusPlug receives the address and saves it.
Then the bus communication starts automatically.
3. Only the FieldBusPlug contains a valid address (e.g. a new spare UMC is connected which has 255 as
address). The UMC gets the address from the FieldBusPlug and saves it. Then the communication
starts.
4. The UMC100-FBP and the FieldBusPlug contain the same address: Operation and communication
starts.
5. The UMC100-FBP and the FieldBusPlug contain different addresses (e.g. unintentional permutation when
installing a drawer): The behaviour of the UMC100-FBP depends on the setting of the parameter Ad-
dress check.