Masso Spindle direction output under volt

westyone

Westyone
Hello - I'm wiring my Masso to my Leeson VDF on a lathe. All circuits have been tested for continuity and proven good. Masso speed voltage is good @ 10v to the VFD. VDF ignores Masso CW/CCW singles and won't start.

The Control voltage supplied by the VFD is 15v and wired into Masso pin 4-6. Masso returns a voltage of 5v to the VFD on CW/CCW command.

If I jumper the VFD control voltage to either CW or CCW pin on the VFD is starts and runs at Masso programmed RPM.

Based on the above test I suspect the Masso output voltage (5v) is insufficient for the VFD.

Is this a Masso support thing to change the Masso output voltage on CW/CCW pins?

SN 5A-3260

Best Regards

BobJ
 

masso-support

MASSO Support
Staff member
please use the opto transistor outputs on the pins 4,5 and 6,7 if you need more current, wiring example



2.-Bosch-VFD-wiring.png
 

westyone

Westyone
Hello - The wiring example above is exactly what has been done. The manual for the VFD says input terminals need to be 12 VDC.

Can this be done or am I screwed?

Thanks
 

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