Ignore Block Parameters - ABB UMC100-FBP Technical Description

Universal Motor Controller
UMC100-FBP
Technical Description
Block parameters can be used to parameterise a device from within the PROFIBUS master using the GSD
file. The PROFIBUS master then sends the parameters in one block (this where the name came from) to
the device. The block parameters are sent under certain conditions:
• Bus master start-up
• Device start-up
• During normal operation in case of parameter changes
If the UMC shall be parameterized via LCD panel or using the PBDTM the block parameters should not be
sent. As it is not possible to stop the bus master from sending the block parameters the FieldBusPlug can
be configured to stop forwarding these parameters to the UMC (i.e. ignore them). To do so set parameter
"Ignore Block Parameter" to "Ignore".
Relevant parameter:

Ignore Block Parameters.

FieldBusPlug / Issue: 03.2012
A typical customer error message if this parameter was not set is as follows: "We set up
everything correctly and the plant worked for weeks without problems. But then sud-
denly the UMC lost its parameters."
What happened: The UMC was configured e.g. via LCD panel during commissioning.
Then weeks later the bus master or controller was restarted for whatever reason and
therefore sent the default UMC block parameters as they were never set.
If you are unsure if the parameter was set correctly you can also lock the parameters
in the UMC. Then no parameter changes are possible anymore until the lock is reset. If
locked the small "lock" icon is set in the LCD display.
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