Motor Learned Data - GE M60 Instruction Manual

CHAPTER 6: ACTUAL VALUES

6.4.3 Motor learned data

ACTUAL VALUES  RECORDS  MOTOR LEARNED DATA
 MOTOR LEARNED
 DATA
The value indicates how many records are available to the user through the EnerVista UR Setup
NUMBER OF RECORDS
software or via HTTP with Internet Explorer.
The value indicates the last time that learned data records were cleared.
LAST CLEARED DATE
The values for the last motor start-running-stop cycle are available in this menu. The
value is computed during motor running conditions at intervals defined by the
This value is updated whenever new values become available.
Up to 250 motor learned data records are stored and accessible via the EnerVista UR Setup software through the following
methods:
• Select the Actual Values > Records > Motor Learned Data menu item
• Select the Maintenance > Retrieve File menu item and open the "MotorLD.htm" file
• Select the Maintenance> Retrieve File menu item and open the "MotorLD.txt" file
The following historical data is displayed in the motor learned data records:
• Report number
• Report date
• Learned acceleration time (in seconds)
• Learned starting current (in multiples of full load current)
• Learned starting capacity (in percent)
• Learned average motor load (in multiples of full load current)
• Learned run time after start (in hours)
The learned values for acceleration time and effective starting current are the maximum of the individual values acquired
for the last N successful starts, where N is defined by the
The learned value for the starting thermal capacity is calculated using the maximum of the last motor start measurements
and incorporates a security margin defined by the
THERMAL MODEL  START INHIBIT TCU MARGIN
24, 23, 27, 26, and 21%, respectively, with the
27% × 1.25 = 33.75%.
Learned values associated with motor acceleration require the acceleration time function to be enabled. The
learned features are not be used until at least N + 1 successful motor starts have occurred.
NOTE
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
NUMBER OF RECORDS:

0
LAST CLEARED DATE:

2007/07/14 15:40:16
LAST ACCELER. TIME

LEARNED: 0.00 s
LAST STARTING CURR.

LEARNED: 0.00 x FLA
LAST STARTING CAPAC.

LEARNED: 0%
LAST AVRG MOTOR LOAD

LEARNED: 0.00 x FLA
LAST RUN t AFT. STRT

LEARNED: 00:00 hr
NUMBER OF STARTS TO LEARN
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  MOTOR 
setting. For example, if the thermal capacity used for the last five starts is
START INHIBIT TCU MARGIN
Range: 0 to 250
Range: date and time in standard format
Range: value in seconds
Range: value in multiples of full load current
Range: value in percentage
Range: value in multiples of full load current
Range: value in hours
LAST AVRG MOTOR LOAD LEARNED
MOTOR LOAD AVERAGE CALC. PERIOD
setting.
= 25%, then the
LEARNED STARTING CAPACITY
RECORDS
setting.
6
is
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