ABB UMC100.3 Manual page 62

U M C 1 0 0 . 3 U N I V E R S A L M O T O R C O N T R O L L E R T E C H N I C A L D E S C R I P T I O N
62
Example:
The following requirements shall be fulfilled:
• Switch S1 has the following positions: Remote/Local/Test Position/Off.
• (Req. 1) If the switch is in position Local the UMC can only be controlled locally (digital inputs and LCD) but not started
via bus. But it shall be possible to stop the motor also via bus.
• (Req. 2) In position Auto the DCS can control the UMC. Locally only a stop command can be issued.
• (Req. 3) In position Off the motor cannot be started at all
• (Req. 4) Position Test is for commissioning purposes and switches the UMC in simulation mode.
• (Req. 5) If there is a bus fault the UMC shall automatically go into local mode and allows starting/stopping via the
LCD panel and the digital inputs (as in position Local).
The diagram below shows the simplified circuit diagram:
UMC-
PAN
Comm.
Interface
Supply
0V / 24 V DC
From the requirements you can see that the three control places Digital Inputs, Fieldbus and LCD are used.
Furthermore start/stop commands from the different control places shall be blocked or released depending on the Fieldbus and S1
status. Therefore the different modes can be used.
To read in the S1 commands the three multifunction inputs DI0, DI1 and DI2 are used.
Their configuration is as follows:
• Multifunction In 0 = Force Local (NO): This input activates local 2 mode if the user wants to ensure that the DCS cannot control
the motor (Req 1)
• Multifunction In 1 = Test Position (NO): This input activates simulation (Req. 4)
• Multifunction In 2 = Stop: Stop (NO) is dominant and no start is permitted if the input is active (Req. 3)
For the Remote position no input is needed, because if the UMC is not in local mode, it is automatically in Auto mode
Finally it is necessary to configure from which control places the motor can be started in the different operation modes
(Auto / Local ).
GND Contactor
(24VDC) Supply
(e.g. 230VAC)
24VDC
DO3
DOC DO0
UMC100
DI0 DI1 DI2 DI3 DI4 DI5
Sim
Local
Remote
S1
0V
24VDC
K1
DO1 DO2
Off
Fwd Stop
M
L1, L2, L3
3
k1
3