Mesa 7i76e Spindle Reverse

Having issues trying to run spindle in reverse.  Using backup 7i76e board never used but new.  I'm using HF41F relay and wired per the Mesa drawing.  The relay has been verified and working.   The Dir+ does not trigger the relay +24 volts applied to the other side of the coil.  Whats the best way to verify Dir+ of the 7i76e is working properly.


m5
stopped
    36  bit   IN          FALSE  hm2_7i76e.0.7i76.0.0.spindir <== spindle-ccw
    36  bit   IN          FALSE  hm2_7i76e.0.7i76.0.0.spinena <== spindle-enable
    36  float IN              0  hm2_7i76e.0.7i76.0.0.spinout <== spindle-output

m3 s2230
goes forward # 2260-rpm
    36  bit   IN          FALSE  hm2_7i76e.0.7i76.0.0.spindir <== spindle-ccw
    36  bit   IN           TRUE  hm2_7i76e.0.7i76.0.0.spinena <== spindle-enable
    36  float IN        0.49952  hm2_7i76e.0.7i76.0.0.spinout <== spindle-output

m4 s2230
goes forward  @22600
    36  bit   IN           TRUE  hm2_7i76e.0.7i76.0.0.spindir <== spindle-ccw
    36  bit   IN           TRUE  hm2_7i76e.0.7i76.0.0.spinena <== spindle-enable
    36  float IN        0.49952  hm2_7i76e.0.7i76.0.0.spinout <== spindle-output

Thanks Jim

DIR- and ENA- are wired to the spindle common.
NC is wired to spindle foward
NO is wired to spindle reverse

jim

Can you measure the voltage from DIR+ to drive common in both spindle directions?

Field Voltage 24V
TB4 pin3 Spindle + 5V

Dir+ to drive common( Ena- and Dir-)
CW 12.4V
CCW .2V

jim

If +12.4V is the open circuit voltage of the  drives direction pin
that would be OK.

 

 


This is the I have the spindle wired.  The relay never activates.

jim

Is DIR- connected to 24V common?
 

no.

jim

tied the 24 volt and 5 volt commons together all is well.

Thanks for the help.

jim