Motor overload protection – Rockwell Automation 2094-xxxx Kinetix 6200 and Kinetix 6500 Control Module Installation Instructions User Manual
Page 11
Kinetix 6200 and Kinetix 6500 Control Modules 11
Rockwell Automation Publication 2094-IN012C-EN-P - August 2013
Motor Overload Protection
This servo drive uses solid-state motor overload protection that operates in accordance with
UL 508C. Motor overload protection is provided by algorithms (thermal memory) that predict
actual motor temperature based on operating conditions as long as control power is continuously
applied. However, when control power is removed, thermal memory is not retained.
In addition to thermal memory protection, this drive provides an input for an external
temperature sensor/thermistor device, embedded in the motor, to support the UL requirement
for motor overload protection.
Some motors supported by this drive do not contain temperature sensors/thermistors; therefore,
motor overload protection against excessive consecutive motor overloads with power cycling is
not supported.
This servo drive meets the following UL 508C requirements for solid-state overload protection.
Refer to your servo drive user manual for the interconnect diagram that illustrates the wiring
between your motor and drive.
Motor Overload Protection Trip Point
Value
Ultimately
100% overload
Within 8 minutes
200% overload
Within 20 seconds
600% overload
ATTENTION: To avoid damage to your motor due to overheating caused by excessive,
successive motor overload trips, follow the wiring diagram provided in the user manual for
your motor and drive combination.