MESA 7i76 connect to VFD

Do you have a link for the drive manual?

MAYBE SWITCH THESE TWO PINS & ATTRIBUTE A2 TO 10V INPUT ?

REMOVE :
3 SPINDLE+ ==> AM

REPLACE WITH:
3 SPINDLE+ ==> A2

P4-34 SET A2 INPUT SIGNAL SELECTION
0 = VOLTAGE
1 = CURRENT SIGNAL

I SPECULATE THE PINOUT IS CORRECT
3 SPINDLE+ ==> AM

AND THE VFD 9600 SETTINGS ARE INCORRECT. 

LCNC & PNCCONF ARE SET FOR
SPINDLE ANALOG 10V
SPINDLE MAX RPM = 24000
DESELECT USE +- FOR DIRECTION
 

MANUAL for NFlixin VFD 9600 220V 2.2KW:
www.CNC-Tramway.com/PUBLIC/9600_4kw-200kw.pdf

NO RESULT:

REMOVED 3 SPINDLE+ ==> AM
REPLACED 3 SPINDLE+==>A2

P4-34 SET A2 INPUT SIGNAL
0 = VOLTAGE
1 = CURRENT SIGNAL

P0-11 SOURCE OF FREQUENCY UPPER LIMIT
2 = A2

JUMPERS
J10 = DEFAULT
J9 = DEFAULT

I would first verify that you can run the VFD with a voltage applied to A1 (relative to ACOM)
and connecting FWD and REV to DCOM, before connecting anything to the 7I76 or running LinuxCNC.

In addition, the 7I76 has DIR and ENABLE outputs rather than FWD and REV. If you need
to reverse the spindle you will have to program the X5,X6 inputs to have a RUN/DIR function if possible.

The VFD panel Potentiometer turns the Spindle succesfully. Known Good.

Diagnostic Configuration: 
Attempt to run the VFD9600 with a 0-10V Analog source POT that is not the 7i76 firstly to test Pinout function....

Diagnostic Test Pin Functions for
A1 :: ACOM
FWD/REV :: DCOM

Other than panel Pot, I do not have a external seperate non-mesa, non-7i76
0-10V Adjustable Power Supply Pot for "voltage applied to A1 (relative to ACOM)"

Option
No External Pot, use External 5V Power Supply & Switch On/Off 
Attribute VFD9600 for "Slow Acceleration Time" to avoid "Jump Starting the Spindle to the 5V RPM/HZ value"
Apply 5V + to A1
Apply 5V - to ACOM 

Would this diagnostic be safe to attempt?

PNCConf
0: Spindle Output POT Output
0: Spindle Output POT Enable
Analog Max Voltage = 10.00
RPM Max = 24,000

I have reverted the VFD 9600 settings to Terminal Pins Control and evaluate
Connect FWD and REV to DCOM

To clarify,
DCOM is the VFD 9600 Digital Common Ground?
For the 7i76 10V Analog setup? DCOM?  Not ACOM for Analog 10V?

FWD = 7i76 ENA+ CONNECT TO VFD9600 DCOM
REV = 7I76 DIR- CONNECT TO VFD9600 DCOM

Or to Clarify:
FWD = VFD9600 X5 FWD to VFD9600 DCOM
REV = VFD9600 X6 REV to VFD9600 DCOM

VFD9600 X5 Function:
1: Forward RUN (FWD)
2: Reverse RUN (REV)
4: Forward JOG (FJOG)
5: Reverse JOG (RJOG)
6: Terminal UP
7: Terminal DOWN
8: Coast to stop
 

ENA- and DIR- connect to DCOM

SPINDLE- goes to ACOM

7I76:
2X Opto OUTPUT
SPINDLE ENA+
SPINDLE DIR+

VFD9600:
2x Opto INPUT
X5
X6

My guess:
ENA+ to X5 = 1: FWD RUN
DIR+ to X6 = 2:  REV RUN
ENA- and DIR- = DCOM Opto

VFD9600 X5 Function:
0: No function
1: Forward RUN (FWD)
2: Reverse RUN (REV)
3: Three-line control
4: Forward JOG (FJOG)
5: Reverse JOG (RJOG)
6: Terminal UP
7: Terminal DOWN 8: Coast to stop
9: fault reset (RESET)
10: RUN fause
11: Normally open (NO) input of external fault
12: Multi-reference terminal 1
13: Multi-reference terminal 2
14: Multi-reference terminal 3
15: Multi-reference terminal 4
16: Terminal 1 for acceleration/ deceleration time
selection
17: Terminal 2 for acceleration/ deceleration time
selection
18: Frequency source switchover
19: UP and DOWN setting clear (terminal,
Operation panel)
20: Command source switchover terminal 1
21: Acceleration/Deceleration prohibited
22: PID fause
23: PLC status reset
24: Swing fause
25: Counter input
26: Counter reset
27: Length count input
28: Length reset
29: Torque control prohibited
30: Pulse input (enabled only for X5/X6)
31: Reserved
32: Immediate DC braking
33: Normally closed (NC) input of external fault
34: Frequency modificationforbidden
35: Reverse PID action direction
36: External STOP terminal 1
37: Command source switchoverterminal 2
38: PID integral fause
39: Switchover between main frequency source X
and preset frequency
40: Switchover between auxiliary frequency source
Y and preset frequency
41: Motor selection terminal 1
42: Motor selection terminal 2
43: PID parameter switchover
44: User-defined fault 1
45: User-defined fault 2
46: Speed control/Torque control switchover
47: Emergency stop
48: External STOP terminal 2
49: Deceleration DC braking
50: Clear the current running time
51: Switchover between two-line mode and threeline mode
52–59: Reserved

7I76 ENA / DIR
VFD9600 X5&X6 = HIGH SPEED PULSE INPUT TERMINALS
IF 7i76 ENA/DIR = OPTO PULSE
THEN VFD9600 = 30: Pulse input (enabled only for X5/X6)
ELSE 6 SPINDLE ENA+ = 1: Forward RUN (FWD)
AND 8 SPINDLE DIR+ = DISCONNECTED OR 2: Reverse RUN (REV)


7I76 10v Potentiometer
1 SPINDLE 10V - POT LOW = ACOM
2 SPINDLE OUT POT FLOAT = A1 @ A INPUT
3 SPINDLE 10V+ POT HIGH = AM @ A OUTPUT

VFD9600:
A1 = MY GUESS IS
#2 A1 = Main Frequency source X Selection
#2 A1 = Binding Command Source to Frequency Source

P0-03 Main frequency source X selection
0: Digital setting (non-retentive at power failure)
1: Digital setting (retentive at power failure)
2: AI1 (The factory default is the panel potentiometer, which can be switched by jumper J9)
3: AI2
4: AI3
5: Pulse setting (X5/X6)
6: Multi-reference
7: Simple PLC
8: PID
9: Communication setting

P0-27 Binding command source to frequency source
0: No binding
1: Frequency source by digital setting
2: AI1
3: AI2
4: AI3
5: Pulse setting (X5/X6)
6: Multi-reference
7: Simple PLC
8: PID
9: Communication setting

AM = MY GUESS IS #5 = OUTPUT VOLTAGE
P5-07 AM FUNCTION SELECTION
0 = RUNNING FREQUENCY
1 = SET FREQUENCY
5 = OUTPUT VOLTAGE
15 = OUTPUT VOLTAGE

You may have to experiment with the modes to see if
there is a way to do ENA/DIR (RUN/DIR) vs FWD/REV

function 10 (run Pause?) _may_ be equivalent to run
There does not seem to be any description of the modes
in the manual unfortunately

Do you need reverse?