Universal Motor Controller Block UMC100EM

Function :-

1. The UMC provides comprehensive motor protection including phase failure detection, adjustable motor protection for stalled motors during startup or normal operation, configurable current limits to generate trips or warnings and many more.
2. Overload classes 5E, 10E, 20E, 30E and 40E
3. Thermistor motor protection (PTC)
4. Analog inputs for PT100/PT1000 based protection
5. Analog inputs for standard signals (0 – 10 V; 0/4 – 20 mA)
6. Earth fault detection (e.g. when used in IT networks)
7. Power and voltage based protection functions
8. Supervision of the network quality (Total Harmonic Distortion)
9. One device type covers the whole current range starting from 0.24 up to 63 A.

Fieldbus Communication :-

1. The UMC100 can be integrated into different fieldbus networks such as PROFIBUS DP / PROFINET IO, DeviceNet,
MODBUS / Modbus TCP via various communication and Ethernet interfaces. All measured data, status signals and parameters can be accessed via fieldbus.
2.  It is also possible to use the UMC100 as a stand-alone device without any fieldbus communication.
3.  The motor protection and motor management is fully functional in the event of a bus failure.
4.  The fieldbus interface and the UMC can be mounted separately. This offers many benefits in MCC applications especially for withdrawable systems.
5. Parameterisation of the protection and control functions can be carried out with the device description files as defined by the different fieldbuses (e.g. GSD for PROFIBUS). In addition a Device Type Manager (DTM) offering a very convenient device configuration via a laptop or within a control system is also available.
6. Selecting the cyclically transmitted analog values by parameter

Motor Management, Inputs and Outputs :-

1. The UMC100 provides six digital inputs, three relay outputs and one 24 V output. Therefore a wide number of control functions can be covered from the base device.
   2.  If further inputs or outputs are needed, the basic device can be expanded with an expansion module. That provides an additional eight digital inputs, four relay outputs and an analogue output for driving an analogue meter.
   3. Supported standard configurations are direct starter, reversing starter, star-delta starter, actuator, inching mode and many more.
   4. The digital inputs can be configured in many ways to adapt the behaviour of the UMC100 to specific user requirements.
   5. To execute customer specific applications the UMC100 allows free programming of its internal logic. Function blocks for signal adjustment, boolean logic, timers, counters … are available (see manual “Custom Application Editor”).
   6. Different control stations (DCS, DI, Operation Panel …) with individual, adjustable release opportunities are available

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. There is no possibility to bypass this watchdog. 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 motor 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 settings 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.