CyberPower Systems CPS500SL User Manual
Page 10
 
TROUBLESHOOTING
 
 
Problem 
 
Possible Cause 
 
Solution 
 
Full-time surge protection 
outlets stop providing 
power to equipment. 
Circuit breaker has tripped 
due to an overload. 
 
 
 
Turn the UPS off and unplug at least one piece of 
equipment. Wait 10 seconds, reset the circuit 
breaker by depressing the button, and then turn the 
UPS on. 
 
Battery not fully charged.
Recharge the battery by leaving the UPS plugged 
in. 
The UPS does not 
perform expected runtime. 
 Battery is slightly worn 
out. 
Contact CyberPower Systems about replacement 
batteries at 
The on/off switch is 
designed to prevent 
damage by rapidly turning 
it off and on. 
Turn the UPS off. Wait 10 seconds and then turn 
the UPS on. 
The unit is not connected 
to an AC outlet. 
The unit must be connected to a 110/120v 60Hz 
outlet. 
 
The battery is worn out.
Contact CyberPower Systems about replacement 
batteries at 
The UPS will not turn on.
 
 
 
 
Mechanical problem.
Contact CyberPower Systems at
The serial cable is not 
connected. 
Connect the serial cable to the UPS unit and an 
open serial port on the back of the computer. You 
must use the cable that came with the unit. 
The serial cable is 
connected to the wrong 
port. 
Check the back of the computer for an additional 
serial port. Move the cable to this port. 
The unit is not providing 
battery power. 
Shutdown your computer and turn the UPS off. 
Wait 10 seconds and turn the UPS back on. This 
should reset the unit. 
PowerPanel™ is inactive 
(all icons are gray). 
The serial cable is not the 
cable that was included 
with the UPS unit. 
You must use the serial cable that was enclosed 
with the unit for the software and unit to be able to 
communicate. 
 
 
SPECIFICATIONS
 
 
CPS320SL CPS375SL CPS500SL CPS575SL CPS650SL
Capacity
320VA
(185W)
375VA
(210W)
500VA
(275W)
575VA
(320W)
650VA
(350W)
Input Voltage on Utility
100V to 140V
Input Frequency
57 Hz to 63 Hz
On-Battery Output Voltage
120Vac ± 5%
Transfer Time
4ms Typical
Max. Load for UPS Outlets 
(3 Outlets) 
320VA
(185W)
375VA
(210W)
500VA
(275W)
575VA
(320W)
650VA
(350W)
Max. Load for Full-Time Surge 
Protection outlets (6 Outlets) 
12 Amps
On-Battery Output Wave Form
Simulated Sine Wave Form
Operating Temperature
+ 32°F to 95° F. (0° C to 35° C)
Operating Relative Humidity
0 to 95% NON-CONDENSING
Size (Length x Width x Height)
9 7/8” x 6 3/16” x 3 1/8” (25.8cm x 15.9cm x 8.3cm)
Net Weight
10lbs.
10 lbs.
13
13 lbs.
14 lbs.
Typical Battery Recharge Time
8 hours typical from total discharge
Typical Battery Life
3 to 6 years, depending on number of discharge/recharge cycles
Battery Type
12V / 3AH
12V / 4AH
12V / 7AH
12V / 7.2AH
12V / 7.5AH
Recommended Battery
Spill-proof, Maintenance-free, sealed lead-acid
Safety Approvals
UL1778(UPS), CUL107.1/FCC/DoC Class B
8