- 68 -UMC100-FBP
Universal Motor Controller
UMC100-FBP
Technical Description
FieldBusPlug / Issue: 03.2012
Sample Application for using the Multifunction Inputs
The following diagram shows how to realise a dry-pump protection application. When the motor is start-
ing there is no pressure. It takes some time until the pressure reaches its normal value. In this example we
assume that the pressure has to appear within 4 seconds, otherwise the pump can be destroyed.
24 V DC
181716151413121110
DIDIDIDIDIDI
24V
240
543210OutVV
Power
T1
8
DO
1
7
DO
0
6
DO
C
5
DO
C
9
DO
2
8765 9T2 Ca Cb
UMC100
READY
MOT. ON
FAULT
Relay
230VAC
1A
Inputs
24VDC
DC
Pressure switch
2CDC 342 022 F0209
To realize this function the multifunction input can be parameterised in the following way:
• Set the delay time to 4s
• Set the function to "Fault when motor is running"
• Define a meaningful message e.g. "Dry run"
If the pressure switch does not monitor "pressure present" within 4s (or when the pressure signal disap-
pears for more than 4s during operation) the internal fault signal is set and the motor is stopped. The error
message "Dry run" appears as a fault message.
A second example on how to use the multifunction inputs is shown in section "Start-
ing and Stopping the Motor".
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