ABB UMC100-FBP - Page 38

- 38 -UMC100-FBP
Universal Motor Controller
UMC100-FBP
Technical Description
FieldBusPlug / Issue: 03.2012
Protection functions can be either on or off. If switched on, they can trigger a protection trip or a warning
(excluding the thermal overload which is always active and triggers a trip). For some functions an optional
delay can be specified. Some protection functions are only active after motor start-up while others are
active during motor start.
Below is an overview of the available protection functions and when they are active. For details see the
following sections.
Protection Function When active Available Options:
Warning/Trip/Off
Automatic Fault
Reset Possible
Electronic Overload Always Trip Yes
Electronic Overload
Prewarning
Always Warning -
Locked Rotor During motor start Trip -
High Current After motor start Separate warning and trip
levels /Off. Optional delay.
-
Low Current After motor start Separate warning and trip
levels / Off. Optional delay.
-
Imbalance Always (Motor current >
60% of I
e and all three
phases available)
Separate warning and trip
levels / Off. Optional delay.
Yes
Phase Loss Protection Always (Motor current >
60% of I
e)
Trip, Off -
PTC Protection Always Trip, Warning, Off Yes (
excluding PTC
wire break and short
circuit)
Earth Fault Protection Always
After start-up
Trip, Warning, Off -
Load Shedding / Volt-
age DIP
Always
Not in testposition
See subsection voltage DIP -
The motor start-up period ends when the motor current drops to 135% of Ie or if the class
time (i.e. Class 5 -> 1.5 s, Class 10 -> 3 s , class 20 -> 6s, class 30 -> 9s, class 40 -> 12s)
is over. The class time begins with the start command.
The motor-related and protection-related parameters shall be set according to the motor manufacturer's
data sheet. Other parameters of the UMC shall be carefully selected based on the process and the sys-
tem requirements.