Rockwell Automation 150 SMC-Flex User Manual - Manual (Page 21)

Product Overview 1-13
Undervoltage ➀
Utilizing the undervoltage protection of the SMC-Flex, motor
operation can be halted if a sudden drop in voltage is detected.
The SMC-Flex controller provides an adjustable undervoltage trip
setting from 0…99% of the programmed motor voltage. Trip delay
time can be adjusted from 0…99 seconds.
An alarm (pre-fault) indication level can be programmed to indicate
the unit is getting close to faulting. The alarm modification
information is displayed through the LCD, HIM, Communication (if
applicable) and alarm contact closing.
Overvoltage ➀
Utilizing the overvoltage protection of the SMC-Flex, motor
operation can be halted if a sudden increase in voltage is detected.
The SMC-Flex controller provides an adjustable overvoltage trip
setting from 0…199% of the programmed motor voltage. Trip delay
time can be adjusted from 0…99 seconds.
An alarm (pre-fault) indication level can be programmed to indicate
the unit is getting close to faulting. The alarm modification
information is displayed through the LCD, HIM, Communication (if
applicable) and alarm contact closing.
Unbalance ➀
The SMC-Flex is able to detect an unbalance in line voltages. Motor
operation can be halted if the unbalance is greater than the desired
range.
The SMC-Flex controller provides an adjustable unbalance setting
from 0…25% of the line voltages. Trip delay time can be adjusted
from 0…99 seconds.
An alarm (pre-fault) indication level can be programmed to indicate
the unit is getting close to faulting. The alarm modification
information is displayed through the LCD, HIM, Communication (if
applicable) and alarm contact closing.
➀ Undervoltage, overvoltage, and voltage unbalance protection are disabled during braking operation.