6 
To broadcast a warning when power fails. 
To close any open file before the battery is exhausted. 
To turn-off the UPS. 
Some computers are equipped with a special connector to link with the communication port. 
In addition, special plug-in cord may be needed. Some computers may need special UPS 
monitoring software. Contact your dealer for the details on the various interface Kits. 
ATTENTION: UPSMON software and interface port function just available for 
model name with “P” affix. The standard RS-232 cable (pin to pin D-SUB 9 pin 
cable) can be connected between UPS REMOTE PORT and computer COM port 
for the UPSMON series software. 
UPSMON software can be free download from http:// www. pcmups .com.tw 
Appendix A Troubleshooting 
PROBLEM  POSSIBLE CAUSE  ACTION TO TAKE 
Power switch not pushed or 
push-time too short 
Press the power switch more than 1 
second 
Battery voltage less than 10V Recharge the UPS at least 6 hours 
PCB failure  Call for service 
UPS can not turn on 
LED not light 
Load less than 20W at battery 
mode 
Normal condition, “No load shutdown 
function” is active (See 3.2) 
Power cord lose  Plug in the power cord  
AC fuse burn out  Replace the AC fuse 
Line voltage too high, too low 
or black out 
Normal condition 
UPS always at battery 
mode 
PCB failure   Call for service 
Battery is not fully charged  Recharge the UPS at least 6 hours 
Back up time too short
PCB failure  Replace PCB, call for service 
Buzzer continuous 
beeping 
Overload  Remove some loads 
Appendix B Specifications 
MODEL 400A 400AP 500A/AP 600A/AP 800A/AP
Capacity 400VA 400VA 500VA 600VA 800VA 
Voltage 
100V, 110V, 115V, 120V, 220V, 230V, 240V, +/-25% at line 
input 
Input 
Frequency  50 or 60Hz +/- 10% (auto sensing) 
Output 
Voltage (Backup 
mode) 
Simulated sine wave at 100V, 110V, 115V, 120V, 220V, 230V, 
240V +/- 5% 
 7
Frequency 
(Backup Mode)
50 or 60Hz +/- 1Hz 
Auto Voltage 
Regulation 
(AVR) 
AVR automatically increase output voltage 15% above input 
voltage if -9% to-25% of nominal. AVR decrease output 
voltage 13% below input voltage if+9% to +25% of nominal 
Transfer Time 2/4 milliseconds, including detection time 
Spike Protection 480 Joules, 2ms 
Unit Input  Fuse or circuit breaker for overload & short circuit protection 
Overload 
Protection 
UPS automatic power off if overload exceeds 110% of nominal 
at 60s and 130% at 3s 
10 Base-T Cable 
Port 
Optional YES Optional/YES 
Protection 
and Filtering
Short Circuit  UPS output cut off immediately or input fuse protection 
Type 
Sealed, maintenance-free lead acid batteries with 3-6 years 
typical lifetime 
Typical 
Recharge Time
6 hours (to 90% of full capacity) 
Protection  Auto discharge protection 
Battery 
Back up Time 
(PC with 15” 
monitor) 
≒15 min ≒20 min ≒20 min ≒20 min ≒25 min 
Net Weight Kg 
(lbs) 
4.2(9.2) 5.6(12.3)
6.0(13.2)/ 
6.3(13.9)
6.2(13.7)/ 
6.5(14.3) 
6.3(13.9)/ 
6.7(14.7) 
Shipping Weight 
Kg (lbs) 
4.6(10.1) 6.0(13.2)
6.5(14.3)/ 
6.8(15.0)
6.7(14.8)/ 
7.0(15.4) 
6.8(15.0)/ 
7.2(15.9) 
Dimension (mm) 
W x D x H 
97 x 260 x 
135 (3.8” x 
10.2” x 
5.3”) 
97 x 320 x 135 (3.8” x 12.5” x 5.3”) 
Input Inlet  IEC 320 power inlet 
Physical 
Receptacles NEMA5-15R (1x0V), IEC320 female appliance coupler (2x0V) 
Battery Back-Up Slow beeping sound (about 0.47Hz) 
Battery Low  Rapid beeping sound (about 1.824Hz) 
Alarm 
Overload  Continuously beeping sound 
Interface RS-232 NO YES  NO/YES 
Ambient 
Operation 
3,500 meters max. elevation, 0-95% humidity 
non-condensing, 0-40℃ 
Audible Noise <40dBA(1 meter from surface) 
Environment
Storage 
Condition 
15,000 meters max.