Help Needed For Master Slave Operation In VFD

[MohsinEnt]

Hello. I want to synchronise 6 VFD.Fuji Frenic Multi series.
One will be master. there should be an option to increase or decrease the speed of slave VFDs 5% from the Master reference. How can i do it? Any help will be appriciated.Thanks in advance. Sorry for my bad english.

 

[lukin1977]

you did not give us much information but, most of VFDs have a 2nd speed reference input that you can use to add or increase to the 1st speed reference coming from master VFD
they are usually called: Speed Ref 1 and Speed Ref 2

 

[controlsdude]

There are optional inputs like the analog input, which is kind of flaky because its analog.
Then there is the digital locking between drives, where they have to be networked so that they can all can be locked digitally to the master drive. Some drives have a special digital lock network for this and it all depends on your manufacturer of drive.

 

[MohsinEnt]

VFD is FUJI FRENIC MULTI SERIES. 11 KW 6 VFDS.I want to increase and decrease like 5% from the master reference. How can i do it? Thanks for your reply.