Antec True430 question

[Muse]

I just switched my case fan in my PC that has an Antec True430 PSU. Had a Panaflo in there and put in my PC Power & Cooling Silencer instead. The fan didn't kick on at first. The room's quite cool at the moment and I have the case cover off. Hitting the fan blades with my finger I got it started and it's going slow. I measured the voltage going to the fan and it's 5 volts DC. Now, this is a 12 volt fan and the Antec manual shows 12 volts for the connector. I realize that this PSU regulates the speed of case fans and the PSU fans. Does it do this by lowering the voltage to 5 volts from 12 volts (at least on the case fans)?

I'm concerned that the Silencer doesn't seem to want to get going on 5 volts. Will the Antec kick up the voltage to 12 volts as soon as it deems it's time to do so (i.e. things are getting hot)? If so, I assume the Silencer will get going and then the Antec can slow things down by supplying 5 volts when things cool down. Thanks for any info.

 

[Zap]

If you connected the fan to the two wire "fan only" connectors from the Antec power supply, the power supply will increase voltage as temperatures (within the power supply) increase. It has been my experience/opinion that the Antec TruePower power supplies, being as high quality as they are, are quite immune to high temperatures. Thus, they won't kick up the fan speed until things are extremely toasty.

 

[Muse]

In any case, I'm pretty convinced now that the Silencer fan is defective. I don't trust it, anyway. I'm not sure it will kick on when given 12 volts! There seem to be dead spots. At certain points in the 360 rotation, there's no force, it seems. Whatever it is, it can't be relied upon to start spinning. I'm going to have to can it and put in a Vantec Stealth instead. The spec isn't quite as good, but it's new.

 

[subman]

I have the Antec True480 PSU and I have measured the Fan Only connectors voltage at 4.7v with a digital voltmeter and it never seems to go up even tho I am in hot climes and the room temperature is about 33C,

The PSU's Fan rotates so slow that the MoBo does not show the RPM for the PSU fans in the BIOS. I have measured the temperature of the air coming out of the back of the PSU at 43C - NOT GOOD. I Feel I must open the PSU and connect the Fans to a 7v supply.

 

[Muse]

Originally posted by: subman
I have the Antec True480 PSU and I have measured the Fan Only connectors voltage at 4.7v with a digital voltmeter and it never seems to go up even tho I am in hot climes and the room temperature is about 33C,

The PSU's Fan rotates so slow that the MoBo does not show the RPM for the PSU fans in the BIOS. I have measured the temperature of the air coming out of the back of the PSU at 43C - NOT GOOD. I Feel I must open the PSU and connect the Fans to a 7v supply.

I would contact Antec tech support before doing that. It shouldn't be necessary.

 

[caz67]

[I would contact Antec tech support before doing that. It shouldn't be necessary.[/quote]

I agree

 

[Zap]

Originally posted by: subman
I have the Antec True480 PSU and I have measured the Fan Only connectors voltage at 4.7v with a digital voltmeter and it never seems to go up even tho I am in hot climes and the room temperature is about 33C,

I have measured the temperature of the air coming out of the back of the PSU at 43C

Like I said, the TruePower units seem immune to heat, so the fans never spin up. I have three of them, two 330W and one 430W, and they are all like that. I think it is by design. However, 4.7v does seem way too low. I've used mine with Panaflo "M" fans and generic fans, and none have failed to spin up.

 

[Muse]

Originally posted by: Zap

Originally posted by: subman
I have the Antec True480 PSU and I have measured the Fan Only connectors voltage at 4.7v with a digital voltmeter and it never seems to go up even tho I am in hot climes and the room temperature is about 33C,

I have measured the temperature of the air coming out of the back of the PSU at 43C

Like I said, the TruePower units seem immune to heat, so the fans never spin up. I have three of them, two 330W and one 430W, and they are all like that. I think it is by design. However, 4.7v does seem way too low. I've used mine with Panaflo "M" fans and generic fans, and none have failed to spin up.

I think I'm going to have to chuck the Silencer. Too bad, it was my favorite 80 mm fan. The one with the best specs and it also was the most expensive. Has a 5 year warranty, but I'm sure I got it longer ago than that. It was my first attempt at quieting down my PC.

 

[subman]

I got in touch with the local importer of Antec products and he said "thats the way it is supposed to run". I suppose Antec have to make sure the fans last for the 3 year warranty period thats why they are made to run SLOW. 😀

 

[Kuznetsov]

Originally posted by: subman
I have the Antec True480 PSU and I have measured the Fan Only connectors voltage at 4.7v with a digital voltmeter and it never seems to go up even tho I am in hot climes and the room temperature is about 33C,

The PSU's Fan rotates so slow that the MoBo does not show the RPM for the PSU fans in the BIOS. I have measured the temperature of the air coming out of the back of the PSU at 43C - NOT GOOD. I Feel I must open the PSU and connect the Fans to a 7v supply.

Yeh its normal and its suppose to be like that. Thats the low noise technology. Spin the fan slow and therefore low noise. I used Antec True480 on my other comp and ASUS probe detected the speed of the fan at 1800RPM even less most of the time and this is during cooking hot summer days. When i play games it got even hotter but the RPM doesnt go pass 2000. Sometimes when i touch the unit it gets really hot and pushes out extremely hot air.

Still works till now so u have nothing to worry about.

 

[Tiamat]

How slow do your antec psu fans run? Mine starts at 1600rpm and quickly stabilizes at 1800 rpm. Thats pretty fast in my book. Im assuming slow is ~ 800rpm in your books? Typically my mobo temps are 24-32 and cpu temps are 42C-55C

 

[Muse]

Originally posted by: Tiamat
How slow do your antec psu fans run? Mine starts at 1600rpm and quickly stabilizes at 1800 rpm. Thats pretty fast in my book. Im assuming slow is ~ 800rpm in your books? Typically my mobo temps are 24-32 and cpu temps are 42C-55C

I don't know the speeds on my Antec True 430 fans. How can I find that out? The case fan is running slow and like I say, it's getting 5 v. I assume that if things get too warm, it'll go up to 12 v.

Since I put in my Zalman heatpipe on my vid card (couple days ago) my case and CPU temps have gone up around 3-4 C, I think. They run 41-45 for the most part.

 

[Tiamat]

the speed of the fans in the psu are reported to the motherboard via a 3 pin fan controller that comes outta the psu. Plug that into any of the 3 pins on teh motherboard, if you still dont see a reading, you can plug it into the cpu fan pin out on teh mobo and definately get a reading then.

 

[Muse]

Originally posted by: Tiamat
the speed of the fans in the psu are reported to the motherboard via a 3 pin fan controller that comes outta the psu. Plug that into any of the 3 pins on teh motherboard, if you still dont see a reading, you can plug it into the cpu fan pin out on teh mobo and definately get a reading then.

This PSU (Antec True430) has two fans. They have two 3-pin leads coming from it? You can plug them both into the MB to get RPM readings? Wouldn't that change the voltages going to the fans?

 

[CalvinHobbes]

I have a similar qestion about my Antec 480W PS. This whole time I was thinking that the fans I was buying were not just very good with airflow and then I realized that the "fan only" power was not sending 12V to the fans. Is there any way to raise the volts on the "fan only" line? I prefer cooling over noise levels.

 

[AntecCSR]

The 3-pin fan monitor only sends rpm info to the mobo's BIOS. It won't do anything to change the rpm of the fans (either in the PSU or connected to the Fan Only connectors).

The only way to increase the voltage to the fans on the Fan Only connectors is to increase the temperature inside the PSU (or at least to the temp sensor inside). If you want cooling over quiet, just use a standard molex and they'll go at full throttle.

AntecCSR

 

[Tiamat]

Originally posted by: Muse

Originally posted by: Tiamat
the speed of the fans in the psu are reported to the motherboard via a 3 pin fan controller that comes outta the psu. Plug that into any of the 3 pins on teh motherboard, if you still dont see a reading, you can plug it into the cpu fan pin out on teh mobo and definately get a reading then.

This PSU (Antec True430) has two fans. They have two 3-pin leads coming from it? You can plug them both into the MB to get RPM readings? Wouldn't that change the voltages going to the fans?

The 3pin connector only has an rpm sensing line in it. I believe it reads the RPM of the 92mm fan only. I could be wrong tho. That wont change the voltage going to the fan because there are no power wires in this specific 3pin connector. I believe it is a blue colored single wire attached to a 3 pin connector.

 

[Muse]

Originally posted by: Tiamat

Originally posted by: Muse

Originally posted by: Tiamat
the speed of the fans in the psu are reported to the motherboard via a 3 pin fan controller that comes outta the psu. Plug that into any of the 3 pins on teh motherboard, if you still dont see a reading, you can plug it into the cpu fan pin out on teh mobo and definately get a reading then.

This PSU (Antec True430) has two fans. They have two 3-pin leads coming from it? You can plug them both into the MB to get RPM readings? Wouldn't that change the voltages going to the fans?

The 3pin connector only has an rpm sensing line in it. I believe it reads the RPM of the 92mm fan only. I could be wrong tho. That wont change the voltage going to the fan because there are no power wires in this specific 3pin connector. I believe it is a blue colored single wire attached to a 3 pin connector.

Ah, well, what I see is a 3 pin connector coming from the True430 that I've had connected to a connector on my MB (MSI KT3 Ultra2) to a connector labeled PSFan1. But here's more than one wire. There IS a blue, but there's also a black.