I have ordered a LED driver (Mean Well LDD-600HW https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&productId=2155971&catalogId=10001&krypto=9x3mj8umRTq%2Bz45%2B%2FVCmYNKve39bJ12tZf1V8nTh83hfocjRhIYBqA%3D%3D&ddkey=https:StoreCatalogDrillDownView) for controlling a high-current LED (~600mA). The brightness is controlled via a PWM signal sent to the driver.
I am having trouble wrapping my brain around how this is going to work, and here's why...
The data sheet (https://www.jameco.com/Jameco/Products/ProdDS/2155971.pdf) says that I will only have 5 wires.
1: + power supply 2: - power supply 3: + LED 4: - LED 5: PWM signal.
Since the Vin voltage is between 9 ~ 56 VDC, and the PWM signal HIGH is between 2.5 ~ 6 VDC, how does this work? How can I use my Arduino to provide this PWM signal? Can I hook my arduino ground to the -Vin (24VDC)? I am powering the Arduino with USB cable. Will this fry stuff? can grounds of differing voltages be intermixed??
Am I missing something?