Heated Bed With SSR

[ZakRabbit]

I'm planning on using a 24V psu dedicated to heating the bed only. I bought a Crydom branded ssr because it's too hard to find a non-clone Fotek. Maybe I've been reading too much, but because of the ssr, I'm planning on using a GPIO to trigger so that the "saved" output from the FET can be used for something else. I've included the pertinent config below. My question is that if I want to maintain PID control, can I add the pwm frequency line like I have? There is no setting in the "stock" config file for it.


temperature_control.bed.enable true #
temperature_control.bed.thermistor_pin 0.24 #
temperature_control.bed.heater_pin 2.4 # changed from 2.5 (low level GPIO instead of MOS/FET)
temperature_control.bed.pwm_frequency 20 #added for ssr
temperature_control.bed.thermistor Honeywell100K # see http://smoothieware.org/temperaturecontrol#toc5
#temperature_control.bed.beta 4066 # or set the beta value



temperature_control.bed.set_m_code 140 #
temperature_control.bed.set_and_wait_m_code 190 #
temperature_control.bed.designator B #