I'm working on a project to run a 12 volt 12 amp DC gearmotor via PWM output from a controller. I am using a Crydom solid state relay to power and motor and trying to figure out what diode is correct for this application. I have read about using a zener diode for fast operation. Is this the proper type and how do you size the diode to this application?
Edit: Motor: Leeson M1125273: .13 Hp, 12vDC, 12.0 A
SSR: Crydom DR2220D30U: Max Turn-On: 75 usec Max Turn-Off: 100 usec
PWM F is 100 Hz