GE Industrial Solutions EntelliPro ES User Manual
Page 212
CHAPTER 5: WinESG
EP OS MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
5.1
6
Phase unbalance/loss delay:
select the delay time when phase unbalance or phase loss fault or
warning is issued. Selectable from 1 to 15 seconds. When ATEX is selected
the time is fixed to immediate.
Max current delay:
time delay before the maximum current will be measured.
Immediate: maximum current will be measured and displayed upon motor
starts.
2-minute: maximum current will be measured and displayed 2 minutes
after the motor has started.
Maximum current measurement and display are continuous operations for
as long as the motor is in running state.
Illustration B shows the thermal overload function, which reflects the warming up or cooling down of the motor in a
mathematical heat model.
Trip Class:
Eight tripping classes per IEC 60947 can be set. The trip time depends on
the trip class and the current. The trip class is the time in seconds in which
the EntelliPro ES trips in case of 7.2 times the motor rated current, as
shown below. Refer to section 3.1.3 for the trip time curves.
Class 5 within 5 seconds
Class 10 within 10 seconds
Class 15 within 15 seconds
Class 20 within 20 seconds
Class 25 within 25 seconds
Class 30 within 30 seconds
Class 35 within 35 seconds
Class 40 within 40 seconds
Cool down factor:
extends the time until the motor can be turned ON after an
overload trip. Selectable from 0 to 15. Zero disables this function.
For ATEX application zero cannot be selected. Refer to section
3.1.4
for
additional
information
Overload memory:
if selected, the motor heat value, overload trip and TMA trip are
stored in non-volatile memory upon power failure. They will be
restored when power is applied and the EntelliPro ES will require a
reset.
CAUTION:
For motors in explosion hazardous areas the overload protective function must not be disabled.
Illustration C shows the analog output function. EntelliPro ES provides a 0-20 mA or 4-20 mA output function. An
ampere meter can be connected and the measured current corresponds to the mean value of the three phase currents.
Limit value:
set the primary current value that correspond to 20 mA at the output. For
example, if set to 20A and the primary current is 20 A the output current
will be 20 mA.