AXBB-E to Sunfar E550 VFD Terminal Connections

[JohnnyCimino]

I was able to run the two tests as directed by [email protected]. This was the result:

Speed Control through UCCNC

In this test I set F0.02 = 1000, F0.01 = 1 ;
Connected Axbb-e AO1 to VFD AI and Axbb-e 5v0 to VFD GND

I initially started the spindle from the VFD panel by pressing the "run" command and was then able to control the speed from UCCNC software using the "S" commands in the MDI field. This test shows that the PWM signal between the AXBB-E and the VFD is working. It should be noted that the M3 command had no effect in this mode (when toggled between "on" and "off" it did not change the spindle operation).

Spindle On/Off Via a Relay

For this test I used a OMRON LY2NJ relay. This relay does not appear to have polarity for the 24V DC supply to the coil as markings on the coil did not specify "+" or "-". I did try the wiring both ways just in case.

For this test I connect as follows:
- VFD 24V to Relay port 8 (coil power)
- AXBB-E Port O3 to Relay port 7 (coil power)
- VFD CM Port to Relay port 1 (COM)
- VFD X1 Port to Relay port 2 (NO)

I changed F0.02 to 1001 for this test

Port 03 on AXBB-E was configured for M3 (FWD) in UCCNC
Port 04 on AXBB-E was configured for M4 (REV) in UCCNC

Please note that although I am not planning to ever use REV motion on the spindle I configured it so the "two line mode 1" set in VFD Parameter F0.02 command would have the correct number of inputs to make a decision . I did not physically wire Port O4 to X2.

VFD F1.08 was set for 11 (FWD)
VFD F1.09 was set for 12 (REV)

This did not work. For example the spindle did not respond to a M3S1000 command.

When I clicked the M3 button in UCCNC the LED light up on the AXBB-E board. I checked continuity between O3 and 5V0 on the AXBB-E board. With M3 not active, LED was off and there was no continuity. With M3 active , LED was on and there was continuity. It seems that M3 allows a path from O3 to ground which what I expected.

When I checked the voltage across the relay it was always 0 volts. The state of O3 did have any effect on energizing the coil.

Port 03 on the AXBB-E contains a high speed 10Mbit/sec optocouplers and an N-channel Mosfet transitor. Perhaps I am not understanding how this device works.

Any further guidance would be appreciated.

[JAZZCNC]

sounds to me like you have the relay wired wrong or it's faulty. Again break this down into 2 halves.
Also, the OUTPUTS provide a path to 24V rather than 5V so test between 24V-0, not 5v-0.

#1 Test the VFD parameters are correct by touching a wire between CM and X1, if the parameters are correct the VFD will start, make sure there is a speed set in UCCNC first and do an M3 (start spindle) so the VFD see's the 0-10v).
#2 Remove the coil wires and put a meter between and measure the voltage. You should see 24V, if yes then you have a faulty relay or miss wired it. Also, check the relay coil is DC rather than AC which is a common error when buying relays.

The instructions I gave you last night regards the relay on/off and UCCNC setup are not a maybe, I do this on every machine I build so it's well-proven.

[JAZZCNC]

For this test I connect as follows:
- VFD 24V to Relay port 8 (coil power)
- AXBB-E Port O3 to Relay port 7 (coil power)
- VFD CM Port to Relay port 1 (COM)
- VFD X1 Port to Relay port 2 (NO)

Ok looking at your post again then think I see the problem. You are taking the 24+ for the relay coil from the VFD rather than the 24V PSU.

Connect the 24V+ from the PSU which powers the AXBB-E rather than from the VFD.