Hi All,
I have an Eaton Powerware 5110/1500VA UPS that I had to replace due to a fault, its been gathering dust for quite a while and I thought I would try to repair it.
The schematic for this model UPS doesn't seem to be available anywhere online, though from what I can see:
The main UPS board is a PC04217-01C, which is using an undocumented 97537CV15 microcontroller (?), and a separate daughter board for spike protection on RJ12 line.
Main components:
There are two groups of three IRF3205 MOSFETS for the DC -> AC rectification.
An LM324N OP Amp (I believe this is being used to monitor the supply voltage level)
An LM7812 voltage regulator
An IR530P power Mosfet
An IRF3710 Power Mosfet
An RL1602C rectifier.
A Cosmo 1010/817 photocoupler (?)
Two 793-P-1C relays
One JH1403W relay
A Zettler AZ733W dual pole relay.
Starting with a pair of new batteries the UPS starts up fine, going through its self test routine, with its green LED activating showing it has picked up 240v mains. Switch off the mains power and it alarms immediately, cutting over to battery sourced power, which also seems fine….well it thinks its fine!
The unit has 6 power outlets at rear; three are battery backup outlets, and three surge protection only. Connecting a load shows the battery backup outlets will run fine on battery supplied power when the mains power is disconnected, however when mains power is ON there is actually no power on these 3 outlets whatsoever. Everything else on the unit is operating as per normal, including the filtered 240V on the other 3 outlets.
Looking at the circuit board there are no visible signs of bulging capacitors, and no obvious signs of overheating/burning of any components. My initial thought was it could be a faulty power relay, not switching back properly when the mains 240V is active – or a failure somewhere in the control cct upstream of the relay.
Does anybody out there have a circuit diagram for this model UPS or similar, or any suggestions where to start looking for this fault?
I have an Eaton Powerware 5110/1500VA UPS that I had to replace due to a fault, its been gathering dust for quite a while and I thought I would try to repair it.
The schematic for this model UPS doesn't seem to be available anywhere online, though from what I can see:
The main UPS board is a PC04217-01C, which is using an undocumented 97537CV15 microcontroller (?), and a separate daughter board for spike protection on RJ12 line.
Main components:
There are two groups of three IRF3205 MOSFETS for the DC -> AC rectification.
An LM324N OP Amp (I believe this is being used to monitor the supply voltage level)
An LM7812 voltage regulator
An IR530P power Mosfet
An IRF3710 Power Mosfet
An RL1602C rectifier.
A Cosmo 1010/817 photocoupler (?)
Two 793-P-1C relays
One JH1403W relay
A Zettler AZ733W dual pole relay.
Starting with a pair of new batteries the UPS starts up fine, going through its self test routine, with its green LED activating showing it has picked up 240v mains. Switch off the mains power and it alarms immediately, cutting over to battery sourced power, which also seems fine….well it thinks its fine!
The unit has 6 power outlets at rear; three are battery backup outlets, and three surge protection only. Connecting a load shows the battery backup outlets will run fine on battery supplied power when the mains power is disconnected, however when mains power is ON there is actually no power on these 3 outlets whatsoever. Everything else on the unit is operating as per normal, including the filtered 240V on the other 3 outlets.
Looking at the circuit board there are no visible signs of bulging capacitors, and no obvious signs of overheating/burning of any components. My initial thought was it could be a faulty power relay, not switching back properly when the mains 240V is active – or a failure somewhere in the control cct upstream of the relay.
Does anybody out there have a circuit diagram for this model UPS or similar, or any suggestions where to start looking for this fault?
Half of the computer problems is caused by bad contacts 
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