Parker NX Series, Technical Manual, Page: 116 / 116

116 - PVD 3663_GB_NX_March 2017.Docx
You think the motor is
becoming unusually hot

It may be overloaded or the rotation speed is too low :
check the current and the operating cycle of the motor.

Check if the mounting surface is enough or if this surface
is not a heat source
– see §3.6 cooling.

Friction in the machine may be too high :

Test the motor current with and without a load.

Check the motor does not have thermal insulation.

Check that there is no friction from the brake when
the brake power is on.

Check the cooling circuit
You find that the motor
is too noisy Several possible explanations :

Unsatisfactory mechanical balancing

There is friction from the brake: mechanical jamming.

Defective coupling

Loosening of several pieces

Poor adjustment of servo drive or position loop : check
rotation in open loop
The motor is warmer on
its top Air bubbles can be stocked in the water cooling circuit. You
need to purge the circuit or to double the water flow rate
during 10 minutes to remove the air bubbles.