CHAPTER 6: ACTUAL VALUES RECORDS
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6-25
6
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
SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) MOTOR
THERMAL MODEL START INHIBIT TCU MARGIN
setting. For example, if the thermal capacity used for the last five starts is
24, 23, 27, 26, and 21%, respectively, with the
START INHIBIT TCU MARGIN = 25%, then the LEARNED STARTING CAPACITY is
27% × 1.25 = 33.75%.
The starting capacity, starting current, and acceleration time values for the last start are displayed in the
ACTUAL VALUES
STATUS MOTOR
menu. Clearing the motor data (see the Clear Records section in chapter 7) resets these values to their
default.
Figure 6-5: Motor learned data functionality
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.
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