You can use 4AO module for dimming with external 3rd party LED driver / dimmer module.
This is default option, where 0V = 0% = off, 10V = 100% = on
GENERAL DEVICE PERMISSIONS
Off Value Enabled
0/1V - 10V
Some dimmers require 0V when light is turned off, and in order to start dimming, they use range of 1V - 10V.
Combining analog output with relay (optional)
To save energy, you might want to turn off power supply when all the lights that are powered by it are set to 0%.This will conserve more power when lights are off.
Take into consideration that response time when turning on power supply can be visible.
To prolong lifetime of power supply, you should use Smart Rule to turn off power supply after all lights are turned off for certain time:
SETTINGS INFO LIMITING CONDITION
Le = 0.20Le1 = 0St = 1 (On)
(Le = 0) and (Le1 = 0) and !St
alternative: (Le = 0) and (Le1 = 0) and (St = 0)
If result is TRUE, perform following actions:
If result is FALSE, perform following actions:
When to stop performing specified actions
Value: 5 minutes
Value: not set