CAUTION
USB, RS232 and RS485 interfaces cannot be used at the same time.
Only one interface can be used at a time.
APPENDIX 2
USB COMMUNICATION PORT DEFINITION
Definition of port:
Connection between PC USB port and UPS USB port.
Available function of USB
•
Monitor UPS power status
•
Monitor UPS alarm info
•
Monitor UPS running parameters
•
Timing off/on setting
Communication data format
Baud rate - 9600 bps
Byte length - 8 bit
End bit - 1 bit
Parity check - none
36
37
Battery LED is flashing but
no charge voltage and current
5.
Battery breaker does not switch
on, or batteries are damaged, or
battery is reversely connected.
Battery number and capacity are
not set correctly.
Switch on the battery breaker.
If batteries are damaged, need
to replace whole group batteries,
Connect the battery cables
correctly;
Go to LCD setting of the battery
number and capacity, set the
correct data.
Buzzer beeps every 0.5 seconds
and LCD display ‘output
overload’
6.
Overload
Remove some load
Buzzer long beeps, LCD display
“29”fault code
7.
The UPS output is in short circuit
Make sure the load is not in short
circuit and then restart the UPS.
The UPS only works on bypass
mode
8.
The UPS is set to ECO mode, or
the transfer times to bypass
mode are limited.
Set the UPS working mode to UPS
type (non-parallel) or reset the
times of transferring to bypass or
re-start the UPS
Cannot Black start
9.
Battery switch is not properly
closed:
Battery fuse is not open:
Or Battery low:
Battery quantity set wrong;
Close the battery breaker:
Change the fuse:
Recharge the battery:
Power ON the UPS with AC to set
the battery quantity
Buzzer beeps continuously and
LCD indicates 1, 3, 5, 9,15, etc.
fault codes
10.
UPS is out of order
Nearest Numeric service center
for support.
Solution
S.No.
Problem
Possible reason
Pin 1
Pin 1
PC: +5V
Pin 2
Pin 2
PC: DPLUS signal
Pin 3
Pin 3
PC: DMINUS signal
Pin 4
Pin 4
Signal ground
PC USB port
UPS USB port
Description