UR5e: Robotic arm humming in admittance control

Hi,

I have successfully run the script admittance_control.script. It’s amazing!

admittance_control.script demo link:

https://github.com/UniversalRobots/URScript_Examples/blob/main/admittance-control/admittance_control.script

But when i drag the TCP, the robot emits a humming sound. The humming intensifies when dragging rapidly.
Is this normal behavior ?

My robot :
robot mode: UR5e
tcp mass: 4KG
tcpoffset=[135.76,135.76,126.51,0.0146,0.0437,-2.3713]

My input params:
mass_scaling = 0.5
damping_scaling = 0.5
mass_list = [40, 40, 40, 4, 4, 4]
damping_list = [120, 120, 120, 12, 12, 12]

dead_band = [3, 0.1, 3, 0.1]
compliance_vector = [1, 1, 1, 1, 1, 1]
stiffness_params = [0, 0, 0, 0, 0, 0]
target_wrench = [0, 0, 0, 0, 0, 0]

base_to_compliance_frame = p[0, 0, 0, 0, 0, 0]
tool_flange_to_compliance_center = get_tcp_offset()

Thanks!

my software version :5.12

This issue maybe be resolved through a version update. The image below shows: 5.14.X release notes.