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Q Do I need to connect the shielding on one end or on both ends?
A - Motor power cables need to be connected on both ends.
- Encoder and control cables need to be connected only at one end.
In both cases, the cable shield needs to have a 360° connection.
Below are some examples of proper shielding connection.
Connecting the shield via a pigtail directly to the VFD ground terminal is not
acceptable
.
Q When using the internal PLC of a VFD, is it possible to use the FPID function
block to control other processes? Or can it only be used for the output
frequency?
A The FPID can only be used to control the output frequency. However, the onboard
PLC does offer two independent PID functions (not in all drives) which can be
assigned to any process. These work by using the Special D registers D1200 to
D1235 as shown below.
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