Appendix 2 Usb Communication Port Definition - LEGRAND NUMERIC HP i 33 User Manual

S.No. Problem
5. Battery LED is flashing but Battery breaker does not switch
no charge voltage and current on, or batteries are damaged, or
battery is reversely connected.
Battery number and capacity are
not set correctly.
Buzzer beeps every 0.5 seconds Overload
6.
and LCD display 'output
overload'
7. Buzzer long beeps, LCD display The UPS output is in short circuit
"29"fault code
8. The UPS only works on bypass The UPS is set to ECO mode, or
mode the transfer times to bypass
mode are limited.
9. Cannot Black start Battery switch is not properly
closed:
Battery fuse is not open:
Or Battery low:
Battery quantity set wrong;
10. Buzzer beeps continuously and UPS is out of order
LCD indicates 1, 3, 5, 9,15, etc.
fault codes
36
Possible reason Solution
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.
Remove some load
Make sure the load is not in short
circuit and then restart the UPS.
Set the UPS working mode to UPS
type (non-parallel) or reset the
times of transferring to bypass or
re-start the UPS
Close the battery breaker:
Change the fuse:
Recharge the battery:
Power ON the UPS with AC to set
the battery quantity
Nearest Numeric service center
for support.
APPENDIX 2
USB COMMUNICATION PORT DEFINITION
Definition of port:
Connection between PC USB port and UPS USB port.
PC USB port
Pin 1
Pin 2
Pin 3
Pin 4
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
CAUTION
USB, RS232 and RS485 interfaces cannot be used at the same time.
Only one interface can be used at a time.
UPS USB port Description
Pin 1 PC: +5V
Pin 2 PC: DPLUS signal
Pin 3 PC: DMINUS signal
Pin 4 Signal ground
37