ATC No VFD Running Signal From VFD (BLDC) - PCNC 440

Background

The VFD running signal is not present at terminal 8-PG in some newer model BLDCs.  The same signal can be found at terminals HA, HB, and HC, which are hall-effect sensor inputs. If you have installed an ATC on your PCNC 440, and see no VFD running signal seen by PathPilot, check the wiring configuration on the BLDC, as shown below.

Wire Position Swap

1. Remove wire VFD-8 (while power is off) from VFD terminal 8-PG

2. Place wire VFD-8 in VFD terminal 2-HA in the lower terminal block (see picture).  Note: Wires VFD-8 and 404 should BOTH be in terminal 2-HA.