# Power supply wiring

**URL:** https://forum.cloudray.com/t/power-supply-wiring/1050
**Category:** Laser Power Supply
**Created:** [February 9, 2023, 8:31am UTC](https://forum.cloudray.com/t/power-supply-wiring/1050 "2023-02-09T08:31:07Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![DanielGeist](https://avatars.discourse-cdn.com/v4/letter/d/848f3c/32.png) [@DanielGeist](https://forum.cloudray.com/u/DanielGeist)
#### Post date: [February 9, 2023, 8:31am UTC](https://forum.cloudray.com/t/power-supply-wiring/1050/1 "2023-02-09T08:31:07Z")

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Please advise.  
My old power supply, **IMG\_1373** , is labeled **G-P-L-G-IN-5V** ; my new power supply, **IMG\_1374** , is labeled **H-L-P-G-IN-5V**.

Thank You  
Stay Safe & Healthy

**Daniel Geist**  
Director of Operations

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### Author: ![Polaris](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.cloudray.com/polaris/32/831_2.png) [@Polaris](https://forum.cloudray.com/u/Polaris)
#### Post date: [February 9, 2023, 9:04am UTC](https://forum.cloudray.com/t/power-supply-wiring/1050/2 "2023-02-09T09:04:13Z")

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can you provide the **G-P-L-G-IN-5V** interface picture

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### Author: ![lucas](https://avatars.discourse-cdn.com/v4/letter/l/ba8739/32.png) [@lucas](https://forum.cloudray.com/u/lucas)
#### Post date: [February 9, 2023, 9:13am UTC](https://forum.cloudray.com/t/power-supply-wiring/1050/3 "2023-02-09T09:13:45Z")

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![lQLPJxUm-spj7rjNAgzNAlWwAIkd3u9F5OYD3vr3hUBrAA_597_524](https://us1.discourse-cdn.com/flex020/uploads/cloudray/original/1X/13a79b08a8ef2359b09ded9bff2d67f7b56bc212.png)

The H or L terminals are signal high level and low level, and only one control signal is required.

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### Author: ![jkwilborn](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.cloudray.com/jkwilborn/32/687_2.png) [@jkwilborn](https://forum.cloudray.com/u/jkwilborn)
#### Post date: [February 10, 2023, 10:39pm UTC](https://forum.cloudray.com/t/power-supply-wiring/1050/4 "2023-02-10T22:39:36Z")

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P is water protect, active low.  
L is laser enable active low  
H is an inverted L input, active high  
G is ground  
IN is the pwm/analog power control  
5V is 5V it’s a low current source.

😺