Table 37. Jam; Table 38. Stall; Table 39. Current Unbalance - Eaton Power Xpert C445 User Manual

Chapter 6—Motor Protection
Jam
The C445 will monitor the average RMS value of the three
phase currents. If the RMS value rises above the threshold
for the required length of time a Fault is detected and the
unit will trip. The Jam settings will only be active during the
Motor Running state.

Table 37. Jam

Fault
Code Protection Action
8 Jam Fault Trip
Fault Warning
Stall
The Stall protection monitors the average phase current as a
percentage of FLA of the motor and will trip the motor if the
current exceeds the set threshold. The Stall protection is only
active as the motor transitions from the Starting to Running
states.

Table 38. Stall

1
Fault
Code Protection Action
20 Stall Fault Trip
Note
1
Only active during transition from start cycle to run cycle.
Current Unbalance
Current unbalance is defined using the following equation:
The C445 will monitor the Current Unbalance. If the value
exceeds the threshold for the required length of time a fault
is detected and the unit will trip. The Current Unbalance
protection is enabled only in the Motor Running state.
Modifying the TRIP ENABLE/DISABLE register will enable or
disable the Current Unbalance protection feature.

Table 39. Current Unbalance

Fault
Code Protection Action
6 Current Unbalance Fault Trip
Fault Warning
140 Power Xpert C445 Global Motor Management Relay MN042003EN—October 2016 www.eaton.com
Fault Action
Modbus Units Min.
1008 % FLA 50
1009 % FLA 50
Fault Action
Modbus Units Min.
1007 % FLA 50
Fault Action
Modbus Units Min.
1018 % 1
1019 % 1
Delay (Seconds)
Max. Default Min.
400 400 1
400 400 0.2
Delay (Seconds)
Max. Default Min.
400 200 0
Delay (Seconds)
Max. Default Min.
60 15 1
60 15 0.2
Max. Default Modbus
60 5 1010
5 2 1079
Max. Default Modbus
0 0
Max. Default Modbus
60 15 1020
5 2 1079