Help with pot for dimming

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cmar
LED-Curious
LED-Curious
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Joined: Sun Jan 24, 2021 6:37 pm

I have this driver:
DS60W24V (24V, 2500mA)
https://ltftechnology.com/pdf-files/60W ... Series.pdf

In the specs it says:
• Optional DC Dimming control: 0-10Vdc, 2mA, 2-wire.
• Optional RD Dimming control: 3-wire 50KΩ Resistance Dimming.

But it also has this:
1. Optional DC Dimming control:
a. 0-10V DC Dimming Mode.
b. Input Voltage Range 0-10Vdc, Output constant current Adjustable range: 10%-MAX. When input ﹥10V , Constant
current output for maximum value. When input ≤ 0V (Include input open circuit), Constant current output
for 10%.
c. Input impedance 5KΩ, dimming response time : 20ms.
d. Input Current: MAX. 2mA.
So a 5k pot does not give me full brightness.
Full brightness it 22.5V, 2.5A, 56W
with the 5k it is 21.75V, 1.33A, 28.93 W

The dimming wires when open are 10.52V, 1.33mA
With the 5 K they measure 5.13V, .97mA

The 2mA specified for the dimming circuit would give me 5K Ohm
From the measurement of the open dimming wires I would need 7.5K ohm
But from the 5K being about half the volts for full brightness, and half the watts at the strips, I would need 10K.

I don't need full dimming, I am more concerned about full brightness, and the ability to have some decent control and dim down to about 50%.

Would the 10K give me that?
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