Not enough Power availiable error
- kblazk
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Not enough Power availiable error
I have a WS-12-250-DC and when I try to add a Cambium PMP450i accesspoint on any additional port set to 48V it won't enable and says not enough power availaible in the log. I am already running two Airfibers on port 1 and 2. The device total is saying there is 135 watts running through it so it should only be half loaded. I have attached screenshots of the problem. Firmware on this unit is 1.3.8.
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sirhc - Employee
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Re: Not enough Power availiable error
1) Update the firmware, v1.3.8 is VERY OLD FIRMWARE
2) The power supply is rated at 250 watts with input voltage above around 16V or so, once you drop below a certain input voltage your watts budget drops to 150 watts then when you get down close to 9 to 10V it drops to 100 watts.
I am on the road but I asked Eric or Dave to specify the actual cut offs for total watts available. There is also a post on here somewhere with a graph.
The switch is better with 24V or 48V battery banks, it will still work down to 9V but your capacity drops which is why on the power Tab you can specify which ports to keep up as your battery banks deplete.
Trying to get 250 watts of 50V from 13V or below is a crap load of amps and heat which is why it intelligently steps down the watts budget to keep things from catching fire.
Run a 24V battery bank if you need all 250 watts.
2) The power supply is rated at 250 watts with input voltage above around 16V or so, once you drop below a certain input voltage your watts budget drops to 150 watts then when you get down close to 9 to 10V it drops to 100 watts.
I am on the road but I asked Eric or Dave to specify the actual cut offs for total watts available. There is also a post on here somewhere with a graph.
The switch is better with 24V or 48V battery banks, it will still work down to 9V but your capacity drops which is why on the power Tab you can specify which ports to keep up as your battery banks deplete.
Trying to get 250 watts of 50V from 13V or below is a crap load of amps and heat which is why it intelligently steps down the watts budget to keep things from catching fire.
Run a 24V battery bank if you need all 250 watts.
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Dave - Employee
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Re: Not enough Power availiable error
250 watts for greater than 13 volts in
200 watts for 11 to 13 volts in
150 watts for below 11 volts in
200 watts for 11 to 13 volts in
150 watts for below 11 volts in
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sirhc - Employee
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Re: Not enough Power availiable error
Yea a firmware upgrade may help
KEEP FIRMWARE UPDATED
USE v1.4.5rc8
KEEP FIRMWARE UPDATED
USE v1.4.5rc8
Support is handled on the Forums not in Emails and PMs.
Before you ask a question use the Search function to see it has been answered before.
To do an Advanced Search click the magnifying glass in the Search Box.
To upload pictures click the Upload attachment link below the BLUE SUBMIT BUTTON.
Before you ask a question use the Search function to see it has been answered before.
To do an Advanced Search click the magnifying glass in the Search Box.
To upload pictures click the Upload attachment link below the BLUE SUBMIT BUTTON.
- kblazk
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Re: Not enough Power availiable error
Today I converted the site to 24V and upgraded firmware and now the 450AP works on this switch. Thank you.
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