Rockwell Automation Allen-Bradley E300

Rockwell Automation Publication 193-UM015D-EN-P - February 2015 259
Protective Trip and Warning Functions Chapter 6
Analog-based Protection
The E300 Electronic Overload Relay’s Analog I/O Expansion Modules scan up
to three analog signals per module. This information can be used to trigger an
over analog level Trip or Warning. The analog-based protection features can be
used with the following analog applications:
• Monitoring motor winding and bearing temperatures that are measured by
RTD sensors
• Monitoring liquid, air, or steam flow
• Monitoring temperature
• Monitoring weight
• Monitoring levels
• Monitoring a potentiometer
• Monitoring PTC or NTC thermistor sensors
Analog Trip Enable (Parameter 187) and Analog Warning Enable (Parameter
193) are used to enable the respective analog-based protective trip and warning
functions.
Table 312 - Analog Trip Enable (Parameter 187)
Bit
1514131211109876543210 Function
XAnalog Module 1 - Input Channel 00 Trip
XAnalog Module 1 - Input Channel 01 Trip
XAnalog Module 1 - Input Channel 02 Trip
XAnalog Module 2 - Input Channel 00 Trip
XAnalog Module 2 - Input Channel 01 Trip
XAnalog Module 2 - Input Channel 02 Trip
XAnalog Module 3 - Input Channel 00 Trip
XAnalog Module 3 - Input Channel 01 Trip
XAnalog Module 3 - Input Channel 02 Trip
XAnalog Module 4 - Input Channel 00 Trip
XAnalog Module 4 - Input Channel 01 Trip
XAnalog Module 4 - Input Channel 02 Trip