L1, L2, L3
3
Contactor
Supply
(e.g. 230VAC)
K1
k1
DOC DO0
DO1
DO2
24VDC
24VDC
DO3
DI0 DI1 DI2 DI3 DI4 DI5
UMC100
UMC-
PAN
Comm.
Interface
0V
Fwd Stop
S1
GND
(24VDC)
M
3
Remote
Local
Sim
Off
Supply
0V / 24 V DC
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:
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 ).
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U MC10 0. 3 U N IVE R SA L MOTOR CONTROLLE R
T EC H N I C A L D E S C R I P T I O N
Содержание UMC100.3
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