GE Industrial Solutions EntelliPro ES - Manual (Page 129)

CHAPTER 3: MOTOR PR OTECTION
EP OS MOTOR MANAGEMENT SY STEM – INSTRUCTION MANUAL 3.17
3.1.6 Overload protection programmable settings
The EntelliPro ES motor trip and alarm overload setpoints may be viewed or changed through Modbus or Profibus DP
communication protocols. GE offers a Profibus configuration application (WinESG), for easy set-up.
EntelliPro ES supports the use of two current transformer (CT rated current for single speed motor and CT rated current
low for two speed motor) and two motor load (motor rated current and motor rated current low settings for protection.
CT rated current low and motor rated current low are mainly used on two-speed motors applications such as Dahlander
and pole changer typicals. In this case when command ON1 is issued, the EntelliPro protections are based on CT rated
current and motor rated current, and when command ON2 is issued, the EntelliPro protections are based CT rated
current low and motor rated current low.
All other overload settings apply to both CTs and motor loads values.
The current transformer and motor load ratings are set in WinESG parameterization/device settings panel shown in the
illustration below or Modbus function code 06 registers 92 to 99.
If the average motor current exceeds 120% of the rated motor current, the EntelliPro ES generates a time to trip
value, which can be viewed in Wi
nESG measure panel shown in illustration below, or Modbus function code 4 register
63 or Profibus class 1 telegram B2704
NOTE:
When the current sensor is changed the motor load is automatically adjusted to 1/6 of the sensor. The motor
load can then be set to any desired value not exceeding the sensor value.