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Fairhope1
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Dear Forum Members,
Related to this forums area of expertise, I have a question I would like to ask. Any input would be greatly appreciated!
First, some background:
My church's bells are rung by three separate Rabbit 2000 Embedded Processors. The combined wattage output of the processors, when not activating solenoids to ring the bells, is only six watts. Two of the bells are rung with a single solenoid which, at activation, draws a peak current of 250 watts. The big bell uses two solenoids which has a peak current of 500 watts. The activation periods for the solenoids is between 60 and 90 milliseconds. The only situation in which more than one bell is rung at the same time is when regular AC current is available and then manually by pushing a button. Lately, our town has had a slew of power outages. During the last outage, one of the processor's flash drives was corrupted (i.e. power surges, other current irregularities). We will have the system designer reload the program and plan on purchasing a good surge protector designed for electronics. As a result of the outages, we are considering the purchase of a line interactive, pure sine wave UPS that is rated at 1500 VA and 1050 watts. I have been told and have read that lower priced simulated sine wave UPS will usually overload when they encounter inductive loads. Based on our system requirements, do you believe the selected device should be adequate to handle the relatively infrequent inductive loads (bell ringing cycles) without overloading? Of course, if we know the power is out, we will have the church office delete any programmed rings until the power is restored. That way, the UPS will only have to handle the very small power load of the powered up processors.
Again, any input is greatly appreciated.
Steve
Related to this forums area of expertise, I have a question I would like to ask. Any input would be greatly appreciated!
First, some background:
My church's bells are rung by three separate Rabbit 2000 Embedded Processors. The combined wattage output of the processors, when not activating solenoids to ring the bells, is only six watts. Two of the bells are rung with a single solenoid which, at activation, draws a peak current of 250 watts. The big bell uses two solenoids which has a peak current of 500 watts. The activation periods for the solenoids is between 60 and 90 milliseconds. The only situation in which more than one bell is rung at the same time is when regular AC current is available and then manually by pushing a button. Lately, our town has had a slew of power outages. During the last outage, one of the processor's flash drives was corrupted (i.e. power surges, other current irregularities). We will have the system designer reload the program and plan on purchasing a good surge protector designed for electronics. As a result of the outages, we are considering the purchase of a line interactive, pure sine wave UPS that is rated at 1500 VA and 1050 watts. I have been told and have read that lower priced simulated sine wave UPS will usually overload when they encounter inductive loads. Based on our system requirements, do you believe the selected device should be adequate to handle the relatively infrequent inductive loads (bell ringing cycles) without overloading? Of course, if we know the power is out, we will have the church office delete any programmed rings until the power is restored. That way, the UPS will only have to handle the very small power load of the powered up processors.
Again, any input is greatly appreciated.
Steve