AD5X: Can [heater_bed] pwm_cycle_time be overridden via mod_data/user.cfg?

[raphaelbs]

Hi! Before installing Z-Mod on my AD5X, I'd like to confirm one specific capability.

Context: my AD5X runs on an off-grid solar inverter (HF type). The bed heater's low-frequency PWM causes fast voltage sags on the inverter output, making the house lights flicker. I confirmed the mechanism with an incandescent lamp + multimeter test. On other Klipper printers, raising the bed PWM frequency to ~50 Hz (pwm_cycle_time: 0.02) is a known fix for exactly this problem.

Questions:

1. With Z-Mod on the AD5X, can I override pwm_cycle_time for [heater_bed] by adding the section to mod_data/user.cfg? Or is the heater config locked when using the native screen mode?

2. Can anyone confirm the AD5X bed is 24V DC, MOSFET-driven from the mainboard (like the AD5M)? I want to be sure there's no AC/SSR zero-crossing limitation before choosing a target frequency.

3. Any known issues with higher soft-PWM frequencies on this MCU (e.g. "Missed scheduling of next digital out event" errors that Voron users sometimes hit at 0.02)?

If someone already running Z-Mod could test the override, that would be amazing. Thanks for the great work on this mod!