The SSR is DC on the control and load side, so yes. The combination of 'On and Off' time capability limits the output carrier frequency to less than 1KHz, which when operating below 1KHz creates too much heat in the 3.5Amp motor I'm using, so I need to find a solution where I can run much higher frequency.
If there is more literature available detailing the MOSFET/opto-coupler circuit included in the manual I'd like to give that more testing. I tested that on the bench (only had IFR520 so used that) but I couldn't seem to see the PWM SIGNAL on the output side of the optocoupler and as soon as the IFR520 was connected it seemed to stay 'closed' and the motor just ran. I eliminated the optocoupler (downside is the motor circuit is 12VDC) but found the MOSFET output acted inversely to the Nano-10 PWM output. When the duty cycle increased the output through the IFR520 slowed the motor speed.
Either I'll need to figure out what's wrong with the breadboard level circuit or source an amplifier board that can take the PWM signal directly from the Nano-10 and drive the motor. Help with either of these would be appreciated.