Phase Sequence Protection - ABB UMC100.3 Manual

C O N F I G U R I N G T H E M OTO R P R OT E C T I O N F U N C T I O N S

Phase Sequence Protection

Enable this protection function to prevent connected equipment from a wrong rotation direction e.g. when driving a crusher or
conveyor. If this protection function is active the motor wires must have a defined order which is from left to right. The correct or-
der is printed on the UMC100.3 housing. Take care that contactors are mounted after the UMC to ensure the phase sequence is not
changed by switching the contactors (e.g. REV starter). Phase sequence protection is not available in single phase operation
mode.
If a voltage module VI15x is present a wrong phase sequence is also detected if the motor is not running.
If no voltage module VI15x is present a wrong phase sequence is detected after the startup of the motor.
In case of a wrong phase sequence the motor will trip after the class time.
(Class 5 -> 1.5 s, Class 10 -> 3 s , class 20 -> 6 s, class 30 -> 9 s, class 40 -> 12 s)
The correct phase sequence is L1 / L2 / L3. With the parameter "Phase Reversal" this can be changed to L3 / L2 / L1.
In case a voltage module is present, this parameter must not be set!
L1 L2
X6 X7 X8
DO Relay T1 T2 Ca Cb
C C 0 1 2
X9
Trip/Rdy Run
Power Out DO DI 24V
0V 24V 3 0 ... 5
N L
X10 X5
If the phase sequence supervision is active the phases must be fed through the UMC in the shown order
Relevant Parameters:
• Check phase sequence
• Phase reversal
• Motor current is > 23% of I
L3
e
45