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Post by pt3r on Nov 28, 2021 11:33:10 GMT
Can I connect 2 individually powered 2x16 rack together via the bus connector? I'm considering to add a simple power module to my second 2x16 rack because it seems like my MASTER I/O power module cannot power both in a stable way, my guess it's the power hungry modules like Algodrone and cirrus that spoil the party.
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pol
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Post by pol on Nov 28, 2021 19:32:13 GMT
Can I connect 2 individually powered 2x16 rack together via the bus connector? I'm considering to add a simple power module to my second 2x16 rack because it seems like my MASTER I/O power module cannot power both in a stable way, my guess it's the power hungry modules like Algodrone and cirrus that spoil the party. My understanding is that you should be OK as long as you use the same ground/earth. If you get excess noise, this will be why. |
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Post by admin on Nov 28, 2021 21:30:09 GMT
Can I connect 2 individually powered 2x16 rack together via the bus connector? I'm considering to add a simple power module to my second 2x16 rack because it seems like my MASTER I/O power module cannot power both in a stable way, my guess it's the power hungry modules like Algodrone and cirrus that spoil the party. I wouldn't use the bus connector. You can use the same power supply and simply use a splitter cable to power both cases, then they will have a common ground and everything works fine. If you use two separate power supplies then you can create a common ground by plugging in a 3.5mm cable in between the Master module on one case and the Power module on the other. |
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Post by maydonpoliris on Nov 29, 2021 2:29:05 GMT
I use a splitter and power 3 racks using the same power supply as per admins advice and it works a charm.
2 racks via the master with a bus connector and one separately using just the power. Can interpatch with no troubles.
Nice tip re the 3.5 cable !!
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Post by pt3r on Nov 29, 2021 6:42:46 GMT
You say you can power 3s rack from one tangible waves power supply? How is that even possible? My 2 2x16 racks are hit and miss when I try boot them up from the AE power supply (VU meter shows only half a screen, switchmatrix 4x4 resets, or overwrites existing presets at boot time, algodrone changes preset etc.)
Do you use one power module per rack which you all feed via the splitter?
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Post by maydonpoliris on Nov 29, 2021 8:07:57 GMT
That doesn't sound good. yep. Up until a week ago I was using 1 master module to power 2 x 2x16 racks (connected by bus) with no issues so far. Then I added a 2x20 rack (half full) with a power module not bus connected but with the power module. Then use 1 tangible waves power supply and a splitter to plug into 1 master and 1 power. so far so good. I've attached a pic in case I'm confusing. The bottom rack has the power module (free standing) The middle has the master and connects the top with the bus. I normally have an inline on/off switch but took it off for the pic. I haven't noticed any presets etc change on the Algodrone.  |
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pol
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Post by pol on Dec 1, 2021 8:46:10 GMT
That doesn't sound good. yep. Up until a week ago I was using 1 master module to power 2 x 2x16 racks (connected by bus) with no issues so far. Then I added a 2x20 rack (half full) with a power module not bus connected but with the power module. Then use 1 tangible waves power supply and a splitter to plug into 1 master and 1 power. so far so good. I've attached a pic in case I'm confusing. The bottom rack has the power module (free standing) The middle has the master and connects the top with the bus. I normally have an inline on/off switch but took it off for the pic. I haven't noticed any presets etc change on the Algodrone. <button disabled="" class="c-attachment-insert--linked o-btn--sm">Attachment Deleted</button> This and another thread re the MultiFx has made me think I need to see if I'm maxing out my Master module, now where's my multimeter.... |
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Post by pt3r on Dec 1, 2021 8:54:15 GMT
That doesn't sound good. yep. Up until a week ago I was using 1 master module to power 2 x 2x16 racks (connected by bus) with no issues so far. Then I added a 2x20 rack (half full) with a power module not bus connected but with the power module. Then use 1 tangible waves power supply and a splitter to plug into 1 master and 1 power. so far so good. I've attached a pic in case I'm confusing. The bottom rack has the power module (free standing) The middle has the master and connects the top with the bus. I normally have an inline on/off switch but took it off for the pic. I haven't noticed any presets etc change on the Algodrone. <button disabled="" class="c-attachment-insert--linked o-btn--sm">Attachment Deleted</button> This and another thread re the MultiFx has made me think I need to see if I'm maxing out my Master module, now where's my multimeter.... How would one going about to measure this? #askingforafriend  |
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pol
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Post by pol on Dec 1, 2021 9:08:32 GMT
This and another thread re the MultiFx has made me think I need to see if I'm maxing out my Master module, now where's my multimeter.... How would one going about to measure this? #askingforafriend I can't promise this is correct but I'm pretty sure I read somewhere on the forum that the Master module can produce 750ma, which means it can power modules up to that amount of current. If I put a multimeter on the bus power and ground I should get a reading of the current being drawn (at this point I'm not sure how to do that, possibly sticking the probes in one of the unused module connectors); there are meters that you put a "claw" around a wire and it will tell you the voltage/current but I haven't got one! The other option is just to tot up the value of the milliamps my modules use (according to grid.aemodular.com/ or the Wiki) and see what that adds up to.... |
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Post by pt3r on Dec 1, 2021 10:12:27 GMT
According to the modular grid my total power consumption is around 445.2mA.
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Post by MikMo on Dec 1, 2021 10:25:57 GMT
I am running 2 2x20 cases from one master module. The cases are not maxed out, but i have only like 10 module spaces empty.
I have not had any problems, but i do not have the meter module and Algodrone.
Mikael
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Post by maydonpoliris on Dec 1, 2021 19:06:08 GMT
Would be cool to get a real life measurement to double check against the grid to make sure nothing is off.
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Post by keurslagerkurt on Dec 1, 2021 19:49:03 GMT
pol do not put an Amp meter between 5V and Gnd, it will short these two out. A classic current meter has (close to) no resistance over it's measuring pins. For measuring current, you need to make a 'cut' in the circuit and insert the current meter there. The standard method to measure this would be putting a very small resistance between your +9V at the PSU and the 9V input of AE. The voltage drop over the resistor can then be used for calculating the current. Of course you need to make sure the resistor is rated for enough Watt. Or you could measure the current draw after the PSU, by taking the PSU out of the rack, and connecting the rest of the rack via a breadboard with this small resistor to measure over. Might be time that i try to measure it myself as well and see what happens when I plug several modules in and out. For reference: this weekend i played with one 2-row and 3 1-row systems all powered by a single PSU, without trouble.
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pol
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Post by pol on Dec 1, 2021 20:31:47 GMT
pol do not put an Amp meter between 5V and Gnd, it will short these two out. A classic current meter has (close to) no resistance over it's measuring pins. For measuring current, you need to make a 'cut' in the circuit and insert the current meter there. The standard method to measure this would be putting a very small resistance between your +9V at the PSU and the 9V input of AE. The voltage drop over the resistor can then be used for calculating the current. Of course you need to make sure the resistor is rated for enough Watt. Or you could measure the current draw after the PSU, by taking the PSU out of the rack, and connecting the rest of the rack via a breadboard with this small resistor to measure over. Might be time that i try to measure it myself as well and see what happens when I plug several modules in and out. For reference: this weekend i played with one 2-row and 3 1-row systems all powered by a single PSU, without trouble. THANK YOU, saved my AE &/or multimeter! |
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pol
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Post by pol on Dec 1, 2021 20:32:42 GMT
According to the modular grid my total power consumption is around 445.2mA. I'm going to do it this way too! |
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Post by keurslagerkurt on Dec 1, 2021 20:35:49 GMT
pol no problem! for this reason almost all current meters have a seperate fuse in the meter, so probably just saved you a fuse 😉 When my students have to measure current, i have to replace about two fuses in meters a day, so you would def not be the first to do it haha!
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Post by keurslagerkurt on Dec 1, 2021 20:55:22 GMT
Oh by the way, the current clamps you were talking about are indeed super useful for this reason! It's crazy to see how they measure current by just putting it around a cable. However it's hard (and expensive) to get a good one that measure mA's accurately. We use them in the lab as soon as we have to measure more than 1A, but under that most are not precise enough.
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Post by maydonpoliris on Dec 2, 2021 2:20:50 GMT
Yeah.....I'm fond of having both arms so I'm not going to attempt anything with currents. Sticking to the grid😅 cheers!!
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