ABB 615 series Technical Manual page 309

1MAC059074-MB A
615 series ANSI
Technical Manual
When the emergency start signal START_EMERG is set high, the thermal level is set to a
value below the thermal restart inhibit level. This allows at least one motor start-up, even
though the thermal level has exceeded the restart inhibit level.
When the thermal content reaches 100 percent, the TRIP output is activated. The TRIP
output is deactivated when the value of the measured current falls below 12 percent of
Current reference or the thermal content drops below 100 percent.
The activation of the BLOCK input blocks the ALARM, BLK_RESTART and TRIP
outputs.
Section 4
Protection functions
303