Configuring The Motor Protection Functions; General Information; Eol And Current Based Protection Functions - ABB UMC100-FBP Technical Description

Universal Motor Controller
UMC100-FBP
Technical Description
4 Configuring the Motor Protection Functions

General Information

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.
The different protection and monitoring functions generates either warning signals, trip signals and
measured or calculated process values. All these data are available to the user to either display them on
the LCD panel, transfer them to the control system or process them in a custom specific applicaion.
The UMC100 can be used with or without an additional voltage module. The protection functions availa-
ble without a voltage module are described in section "Thermal and Current Motor Protection Functions".
The protection functions that require a voltage module are described in section "Voltage and Power Pro-
tection Functions". Finally the voltage DIP function which can be used with or without a voltage module is
described in section "Voltage Dips, Load Shedding".
Automatic Reset of Protection Faults
The setting of the "Fault autoreset" parameter determines how the UMC manages protection trips.
• Off (the default setting): A protection trip must be acknowledged from the user. This can be done via
LCD panel, fieldbus or the multifunction inputs DI0-DI2 if configured.
• On: A protection trip is automatically acknowledged without intervention of a human operator if the trip
condition has gone (e.g. cooling time over).

EOL and Current based Protection Functions

In this section you find information on how to configure the different motor current based protection func-
tions of the UMC.
The following topics are covered:
Function and parameters of the electronic overload protection, the thermal memory and points to consi-
der if the motor is started cyclically (e.g. S3 motor operation mode)
• Long start, locked rotor protection during motor start
• Overcurrent and undercurrent protection during normal operation
• Imbalance protection
• Phase loss protection
• Phase sequence
• Thermistor motor protection
• Earth fault protection with auxiliary device CEM11-FBP or internally calculated
The following process values are available:
Process Value
Motor Current
Earth Fault Current
Thermal Load
Current Imbalance
Time to Trip
Time to Cool
PTC Resistance
Line Frequency
FieldBusPlug / Issue: 03.2012
Explanation
The average current in the three phases 0...800 % of I
Calculated earth fault current
Thermal load of the motor
Imbalance of the motor current in the
three phases
Time until the EOL trips the motor
Time until the motor can be restarted
Value measured from the PTC input in
ohms.
Mains frequency
- 37 -
Data range
e
% of I
e
0...100%. 100% is the trip level.
0...100%
0 ... 6553s (6553s maens an
infinite trip time)
0 ... 6553s
0 ... 4800 Ohm
45 ... 65 Hz
UMC100-FBP