hi all,
Is the SolidSwitch 104 capable as power module for 1.5khz PWM (gx io extender)? I’m looking for a 48v Floor heating PWM controller.
it’s not specified in the docs.
SolidSwitch does not have PWM. It’s on/off. The GX IO-Extender does have four channels of PWM signal output. Note, those PWM are signal level, not for carrying any real current. But, your floor heating controller likely has the actual speed controller to carry the current built in and just needs the signal source. Good luck with your project!
hi Ed,
I think you mis understood. Controlling the SolidSwitch 104 INPUT by using the GX IO extender PWM OUTPUT.
PWMout → solid switch → 48V floorheating
pwm IS on/off. only the solid state must be fast enough to follow the pwm and to have limited power dissipation (heat) on the transients.
Often its specified as “x number of transients in y seconds”.
I know how PWM works. It wasn’t clear to me what you were asking. I don’t know if the SolidSwitch can handle it. But, it seems odd that you would even need it. Does the pump controller in your floor heating system not have a motor controller built in? Anyway, seems I can’t help so I’ll bow out.
hi Ed,
its for a mobile home electrical floorheating, so about 3amps @48V per section (150wattds) and PWM controlled to controll the amount of energy into the sections lineair to the outside temperature.
so basically 1 PWM output into 4 sections, each section having its own SolidSwitch.
A N-type MOSFET module could also be used but these solidSwiches are basically the same.
Then go do it and report back so we’ll all know if it works. It sounds like you’re planning to do it anyway 
Please report back.
well I could also use the Dalcnet DLD1248-4CV-MODBUS, not (natively) supported by Victron but its a 4 channel pwm (500hz) controller 4 channels 5Amps each, but that should be controlled by node-red.. not “out of the box”.
not preferred…