Noise Reduction Techniques - Mitsubishi Electric 800 Series Instruction Manual

Pr.840 = "2" (at regeneration when the motor is in forward rotation)
<When the motor runs in reverse rotation direction>
Bias amount
Torque bias
Bias
C34(Pr.928)
0
C35(Pr.928)
150%
5.4

Noise reduction techniques

When operation is unstable due to Electro-Magnetic Interference (EMI), take measures referring to below.
 Measures at wiring
Separate the power cable as far away as possible from the signal cable.
Use a shielded twisted pair cable for a signal cable.
Take one of appropriate measures below for the shielded cable.
• Connect to terminal 5 of the FR-A8AZ.
• Connect to the common terminal of an analog command device.
• Connect to both terminal 5 of the FR-A8AZ and common terminal of the analog command device.
• Leave both terminal 5 of the FR-A8AZ and common terminal of the analog command device open. (Float the potential of the
shield cable.)
Voltage for balanced load
Pr.846
Voltage for max. load
C37(Pr.929)
Input voltage
Torque bias
Gain
Initial value
C36(Pr.929)
<When the motor runs in forward rotation direction>
Bias amount
Fall-time
torque bias
Bias
0
Pr.847
150%
HIGH RESOLUTION ANALOG INPUT
Voltage for balanced load
Pr.846
Voltage for max. load
C37(Pr.929)
Input voltage
Fall-time
torque bias
Initial value
Gain
Pr.848
5
35