9300 Servo PLC
System blocks
2.13 Internal motor control (MCTRL_MotorControl)
2-55
9300ServoPLC EN 1.4
2.13.10 Chopping frequency changeover
You can select the following frequency for the inverter:
• 8 kHz fixed, for operation with optimum power (C0018 = 1)
– maximum power output of the controller, but with audible pulse operation
• 16 kHz fixed, for operation with optimum noise (C0018 = 2)
– inaudible pulse operation of the controller, but with reduced power (torque)
• automatic change-over between operation with optimum power and optimum noise
(C0018 = 0)
Automatic chopping frequency changeover
The automatic chopping frequency changeover can be used if you want to operate the drive in the
noise-optimized range, but the available torque in this case is not sufficient for acceleration
purposes.
Condition M = f(I) Function
M< M
r16
(I
r16
) Controller operates with 16 kHz (optimum noise)
M
r16
(I
r16
)< M< M
r8
(I
r8
) Controller changes to 8 kHz (optimum power)
M> M
max8
(I
max8
) Controller operates with 8 kHz at its current limit
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