Hi everyone

i have a delta VFD ,it's control signal is from 0..10V or in Mamps (no -10..10v)

my plc is 1215 dc/dc/rly with analog output 0..20ma , i have used a 500ohm resistor to get the 10V

in order to use the motion control, is it a must to have a VFD of -10..10V analog input and a plc of the same voltage rang -10..10V

in the vfd there is something called BIAS which give a result of (0 to 5V CW  5 to10 CCW)

can i use this feature instead of -10..10V 

kind regards

adamlahadi

Hi everyone

i have a delta VFD ,it's control signal is from 0..10V or in Mamps (no -10..10v)

my plc is 1215 dc/dc/rly with analog output 0..20ma , i have used a 500ohm resistor to get the 10V

in order to use the motion control, is it a must to have a VFD of -10..10V analog input and a plc of the same voltage rang -10..10V

in the vfd there is something called BIAS which give a result of (0 to 5V CW  5 to10 CCW)

can i use this feature instead of -10..10V 

kind regards

Hello.

The use of Post-Servo is needed.
The following articles are of help to you:

Using the MC-PreServo and MC-PostServo organization blocks

MC-PostServo [OB95]: Motion Control V6: Analog drive control ranged to 0 - 10V