I'm purchasing a new VFD. The spindle speed input range is -5v to +5v. This seems to be very common for new VFD's. The PlanetCNC "Output board 3/4" only has a 0v to 10v output. Will these two things work together?
Results 1 to 1 of 1
-
03-03-2025, 08:11 PM #1
Member
- Join Date
- Jan 2011
- Posts
- 0
VFD spindle voltage controlled by -5v to +5v. PlanetCNC Output board is 0-10v???
-
03-03-2025, 09:39 PM #2
Member
- Join Date
- Nov 2013
- Posts
- 4961
Re: VFD spindle voltage controlled by -5v to +5v. PlanetCNC Output board is 0-10v???
Hi,
do you need to run you spindle backwards? If not then 0V-5V will be enough, and that can in turn be derived from 0V-10V with two 5cent resistors, if the range
cannot be programmed, which is quite likely.
Craig
-
03-03-2025, 10:21 PM #3
Moderator
- Join Date
- Mar 2017
- Posts
- 1390
Re: VFD spindle voltage controlled by -5v to +5v. PlanetCNC Output board is 0-10v???
0-5V can be adjusted with trimmer pot.
Polarity can be reversed with relay.
-
03-04-2025, 07:05 AM #4
Member
- Join Date
- Apr 2004
- Posts
- 5842
Re: VFD spindle voltage controlled by -5v to +5v. PlanetCNC Output board is 0-10v???
+/- 10v has been a standard analog signal voltage for signaling VFD/spindle RPM changes since the bronze age. When did that change? What new equipment uses this standard?
Reply With Quote
Posting Permissions
