Eaton Power Xpert C445 - C445 UM LED and Button Overview

Chapter 6—Motor Protection
134 Power Xpert C445 Global Motor Management Relay MN042003EN—January 2019 www.eaton.com
Undervoltage
The Undervoltage protection monitors the minimum phase
voltage of the motor and will trigger a fault if the voltage
drops below the set threshold. The Undervoltage protection
is active when the motor is in the Running state. When the
Low Voltage Start Inhibit Enable is set, the Undervoltage will
prevent a start into an under voltage condition as determined
by the Undervoltage Start Inhibit Level.
Table 41. Undervoltage
Overvoltage
The Overvoltage protection monitors the maximum phase
voltage of the motor and will trip the motor if the voltage
exceeds the set threshold. The Overvoltage protection is
active when the motor is in the Running state.
Table 42. Overvoltage
Fault
Code Modbus
Fault Action Delay (Seconds)
Protection Action Units Min. Max. Default Min. Max. Default Modbus
1 Undervoltage Fault Trip 1028 % 10 100 90 1 60 20 1031
Fault Warning 1029 % 10 100 90 0.2 5 2 1079
Start Trip Delay Delay Fault Trip at Startup 0 60 20 1030
Fault
Code Modbus
Fault Action Delay (Seconds)
Protection Action Units Min. Max. Default Min. Max. Default Modbus
2 Overvoltage Fault Trip 1025 % 90 150 110 1 60 20 1027
Fault Warning 1026 % 90 150 110 0.2 5 2 1079