Frequency Response Measurements; Current Control Loop Measurement - Siemens SINUMERIK 840D sl Commissioning Manual

11.2

Frequency response measurements

11.2.1

Current control loop measurement

Functionality
The current control loop only needs to be measured for diagnostic purposes if there is a fault
or if there is no standard data for the motor / power unit combination (third-party motor).
CAUTION
The user must take special safety measures when measuring the current control loop (e.g.
secure drive clamping) for hanging axes without external counterweight.
Operating path
Operating path for measuring the current control loop: Operating area switchover >
"Commissioning" > "Optimization/Test" > "Current control loop"
Measuring functions
The following measuring functions are available for measuring the current control loop:
Measuring type
Reference frequency response
(downstream of the current setpoint filter)
Setpoint step change (downstream of the
current setpoint filter)
IBN CNC: NCK, PLC, drive
Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
11.2 Frequency response measurements
Measured variable
Torque-generating actual current value /
torque-generating current setpoint
Measured variable 1: Torque-generating current setpoint
Measured variable 2: Torque-generating actual current
value
Optimize the drive.
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