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PSC 28A-DUAL H-BRIDGE MOTOR DRIVER

PostPosted: Mon Nov 08, 2010 6:56 am
by carlobot
Hi,
I have just received a PSC 28A board and I interfaced it with a dual H-Bridge for driving two motors in both direction proportionally.I have connected the same dual H-Bridge I use with SKPS-SK40C that works regularly in this configuration.What happen with PSC 28A is very strange;diode-lights of outputs, in the motor driver, show the correct way in according of imputs of the joystiks but motors doesn't run.Same results using, as motor drivers,MD30B and FD04A.I'm going to think about PSC 28A malfunction.I'm wrong?Regards,

carobot

Re: PSC 28A-DUAL H-BRIDGE MOTOR DRIVER

PostPosted: Mon Nov 08, 2010 10:49 am
by sich
Can u show us the schematic of your connection? Need to know how u connect them before giving any comments.

Re: PSC 28A-DUAL H-BRIDGE MOTOR DRIVER

PostPosted: Tue Nov 09, 2010 1:29 am
by carlobot
Hi,
in the image we can see the PSC28A diode lights ON relative at joy LY - LEFT UP and green diode light ON relative at motor-driver,but left motor don't start to run CW.with joy LY - LEFT DOWN diode ligts on PSC28A are ON regularly, the red diode light is ON at the motor-driver but left motor don't start to run CCW.Same result for joy RY - RIGHT UP and joy RY - RIGHT DOWN, diode lights goes ON regularly and respectevely at PSC28A and motor-driver but right motor not run. Wich will be the reason? Regards,

carobot
Image

Re: PSC 28A-DUAL H-BRIDGE MOTOR DRIVER

PostPosted: Tue Nov 09, 2010 2:11 pm
by hyng

Re: PSC 28A-DUAL H-BRIDGE MOTOR DRIVER

PostPosted: Wed Nov 10, 2010 7:22 am
by carlobot
Hi,

thank you very much for your precious help; the problem was that I didn't consider to insert a pull-up resistor.Now PSC28A works fine with all motordriver I have interfaced (MD30B,FD04A and the dual H-Bridge shown in the photo;as you mentioned is quite similar to FD04A but it can drive only two motors).Regards,

carlobot