- 12 -UMC100-FBP
Universal Motor Controller
UMC100-FBP
Technical Description
V 6
FieldBusPlug / Issue: 03.2012
C u rren t
M e asu rem e nt
T h e rm a l
Motor Model
Outputs
Ph a s e Loss,
Imbala nce
O ther Pro tec tio n
Fun c tions
Predefined or User-Defined Function Block Model
T rip
U n it
C o m m a nd s
(D I,
B U S ,
P a n e l)
Sta rt/Sto p
Logic
S ta rte r
Fun c tion
M on itoring
(P anel,
B u s)
P rotection
M oto r Control
H ard wa re
Su p e rvis io n
C heckback
Su p e rvis io n
Status Signals,
Measured Values
PTC
Control Function
Relevant Outputs
Application Trip
Signals
Relay Out
T1
T2
DI
DI0
DI1
DI2
DI3
DI4
DI5
DI0
FBP
Interface
UMC-PAN
24VDC
G N D
int. supply
DOC
DO0
DO1
DO2
DO3
1Ca
1Cb
IO Bus
Ext. Earth Fault
DI0-DI2
Overview of the major building blocks of UMC100-FBP and the data flow among them.
Building Blocks of UMC100-FBP
The next diagram shows the major function blocks of the UMC100 and the data flow among them.
The upper main block contains the protection-related functions. Signals from different signal sources are
evaluated from the trip unit. Depending on the configuration either a trip or a warning can be created. The
motor protection always has priority regarding control of the relay outputs. In case of a protection trip the
relevant contacts are opened and thereafter the motor is stopped. If the device fails, the watchdog opens
the relay outputs automatically for safety reasons.
The main inputs for motor protection are the current measurement and the thermistor sensor. The current
measurement provides information about the actual motor current in the three phases. An advanced mo-
tor model uses the current information and calculates the corresponding motor temperature. At a certain
level it will trigger an overload trip.
The thermistor input measures the PTC resistance. Based on the resistance the cold and hot state of the
motor can be distinguished. Also short-circuit or wire break conditions can be detected.
The lower main block contains the control-related functions. Incoming commands from the panel, the
digital inputs or the fieldbus are ranked from the control place selection block according to the user set-
tings and then forwarded to the active starter function.
The starter function block controls the relay outputs depending on its input signals and the actual state.
Additionally monitoring signals are prepared for the LCD display, the UMC100 signalling LEDs and the
fieldbus monitoring and diagnosis telegrams.
All these blocks run in the so-called logic engine. It is possible to change the application which is running
there but usually the predefined applications will be sufficient. Further information about the creation of
custom applications can be found in the Custom Application Editor manual.
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