my routerboard 433ah keep restarting very 10 to 20 minutes

Hi I have a very serious problem with my router board 433AH its keep restating every 10 to 20 minutes…

In my router board I have three cards b/g with 200 m-watts (600 m-watts)
I connected three Omani antennas of 16dbi each to them.

Wlan3 is set as AP (channel 11 with 2462 mhz)
Wlan1 set as slave wds (channel 1 with 2412 mhz)
Wlan1 set as slave wds (channel 6 with 2437 mhz)

(Is its due to my setup or any other problem or its an bug please clarify it)

They are fixed on iron stand triangle.

Why it’s restarting but when I disable other cards like 1 and 2 then every thing works fine… if only wlan3 is enabled.

Can some one from mikrotik suggest some solution for the same…?

I checked the system health its showing 16.0 to 16.5 volts when all cards are activated

I don’t think that there may be any problem of power supply power is through APC UPS power servo.

Checkout the volts of ur power adapter. 433ah should be powered with 24volts.
there can be surge which ur APC UPS is not handling. R U sure u have 3 omni antenna. mounted so close.
Change them with 3 sectors. 120 degree each.

Ya i have three omani antenna at 1 feet to each other in a triangle and my power adapter is 24 volts only

Birender

Check the power output (watts) of your power supply. If you can’t find that then tell us the amps.

Power is much more important than volts when using multiple radio cards.

To use the water analogy: volts is like water pressure, amps is like hose diameter, watts is like gallons (or liters) per minute. If you are trying to put out a fire, gallons per minute is much more important than water pressure. The water pressure along with hose diameter allow you to figure out gallons per minute.

Also, what model radio cards are you using?

Tom

I am using RB433AH with three Wireless (Atheros AR5413) cards

and power supply is 24 volts adapter given by the vender in India along with the purchase of Mikrotik router board.

how can i check the voltage and amps and how about the watts most of the things are written on the adapter of the adapter one method is to use digital multimeter.

i am right if no please given some suggestion…

Birender

very cool analogy :slight_smile:

To use the water analogy: volts is like water pressure, amps is like hose diameter, watts is like gallons (or liters) per minute. If you are trying to put out a fire, gallons per minute is much more important than water pressure. The water pressure along with hose diameter allow you to figure out gallons per minute.

I normis do you have any suggestion why my RB433AH is restating very 10 to 20 minutes…
Please look on my config posted on the top…

Birender

Are you aware the RB433AH has a built-in voltmeter?
/system health print

Ya i know that when i check the voltage it shows 16 to 18 volts…
But my question is why its restarting…

Birender

buddy there u go.
ur voltage adapter is 18 volts as most vendorsin india do over marking it for 24 volts.
if it is 24 volt it should show atleast 22-24 volts not 16 to 18. or else the voltage supply to ur adapter is low and not 220 volts.

Is there any entries in the log after the reboot? If it is a 24v power supply, and the output is only 16v, it could be shutting down due to overheating. What is the current rating on the power supply?

What will be power supply requirements…

24 volts @ 10 amps is OK or i have to by other one please mention the correct rating for Mikrotik router-board as what voltage is required by the router-board @ what amps.

I have different adapters with different ratings…

48 volts @ 35 amps
48 volts @ 15 amps
48 volts @ 10 amps
24 volts @ 35 amps
24 volts @ 15 amps
24 volts @ 10 amps
12 volts @ 35 amps
12 volts @ 15 amps
12 volts @ 10 amps

all above given adapters having range from 100 volts to 300 volts rating made in Koria

I am using these adapters for systems power supply to our access controllers and switches switches they all are PoE based connectors and all ports have PoE Capability for further extension.

If the same adapters i use with Mikrotik that 24 volts is any problem… as per my knowledge voltage should be consent and amps can be more also because amps is for load of the equipment if voltage is under or over cause equipments damage.

any suggestions…

There is a problem somewhere. None of those are around 16 volts. Don’t use any of the 48 volt units on that board. Are these regulated supplies? How long is the run from the power supply to the router?

Did you look at the log for any entries after the reboot? Do you see an entry like this?
18:00:12 system,error,critical router rebooted without proper shutdown, probably power outage

ADD: With your setup, I would use at least 12 watt power supply. That is 12v@1A or 24v@.5A. Your should provide plenty if they are working ok. And if PoE, NO POWER OVER DATA LINES!

in my case power to Router is through PoE injector and cat cable is around 25 meters and the error same as your…

system,error,critical router rebooted without proper shutdown, probably power outage

My all adapters are connect the centralized power servo APC UPS 275 KVA data center power supply.

Birender

What make/model of PoE injector are you using? It doesn’t send any power over the data lines, does it?

The power supplies don’t have a minimum current, do they? Some of my switching power supplies require a current draw of 10% to 20% of the rating to properly regulate the voltage.

I got it when i purchase the router from the vender in india
system_health.JPG

The vendor is one thing. The manufacturer is what I wanted. I am not perfect, and I do stupid things now and then. Your vendor may not be perfect either. Maybe he gave you the incorrect PoE injector. Just checking.

ADD: I see you edit. That voltage is too high or too low for any of your power supplies. You should not be getting a 35% drop or rise across the supply line.

Dear friend at presently i am not near to power supply i am at remote place our tower construction is going on… i will mention you all details within few hours…

But i attached the system health snap for your ready reference…

Birender

I see your edit. That voltage is too high (12v ps) or too low (24v ps) for any of the power supplies you listed with the line length you have.

can i check it with multimeter the output of the adapter and its amp amp meter i have digital multimeter today i check it and i will post the same for your reference…

hi can you give me your email id or msn or ymg id… if you don’t mind.

Birender