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Power
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5 Configuring the Motor Management Functions
In this section you find the following information:
• Introduction into the supported control stations and operation modes
• How to start and stop the motor from the different control stations
• Available control functions
• Functions related to motor control such as emergency start, checkback monitoring etc.
Starting and Stopping the Motor
Control Stations
From control stations (i.e. source of commands) start/stop commands can be sent to the UMC. Four control stations
are supported:
• Digital Inputs: Allow the motor to be controlled from a control panel with push buttons e.g. mounted locally to the motor.
• DCS/PLC: Commands are transferred via cyclic communication telegrams from the process controller via fieldbus to the UMC.
The UMC uses the PNO motor starter profile which defines the meaning of each bit in the cyclic telegrams. LCD-Panel: Allows con-
trol via the buttons of the UMC-PAN usually mounted in the switchgear cabinet door. Service Tool: Allows control commands to
be issued via acyclic communication services of the used fieldbus. The UMC DTM uses this communication channel for example.
For each control station you can configure if a start and/or a stop command is accepted by the UMC.
Modes
In practice it is often required to release or block start/stop commands from a control station depending on various reasons e.g.
• If the communication to the bus master is interrupted you want to automatically enable control via digital inputs which would not
be possible if the communication is ok
• For service purposes all commands from the bus should be ignored
Therefore the UMC enables start/stop commands to be individually released or blocked from a control station depending on
modes. Three different modes are available named by their typical usage:
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