ABB RELION REX640 Technical Manual page 1190

Protection related functions
5.6 Emergency start-up ESMGAPC (ANSI EST,62)
5.6.1 Identification
Function description
Emergency start-up
5.6.2 Function block
Figure 679: Function block
5.6.3 Functionality
An emergency condition can arise in cases where the motor needs to be started
despite knowing that this can increase the temperature above limits or cause a
thermal overload that can damage the motor. The emergency start-up function
ESMGAPC allows motor start-ups during such emergency conditions. ESMGAPC is
only to force the protection relay to allow the restarting of the motor. After the
emergency start input is activated, the motor can be started normally. ESMGAPC
itself does not actually restart the motor.
The function contains a blocking functionality. It is possible to block function
outputs, timer or the function itself.
5.6.4 Analog channel configuration
ESMGAPC has one analog group input which must be properly configured.
Table 1139: Analog inputs
Input
I3P
Improper analog channel configuration causes a validation error if the analog
channels are not completely configured or they do not match with certain settings.
For troubleshooting, check the contents of this chapter and also the preprocessing
1190
See the preprocessing function blocks in this document for the possible
signal sources.
IEC 61850 IEC 60617
identification identification
ESMGAPC ESTART
Description
Three-phase currents
1MRS759142 F
ANSI/IEEE C37.2
device number
EST,62
REX640
Technical Manual