Njoy Garun Series, Руководство пользователя

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3. Remove units from the parallel system
There are two methods to remove units from the parallel system:
•
First method:
a) Touch “CONTROL” ► “Turn off UPS” and select “Yes” to turn of
the UPS. Then, the UPS will enter into Bypass mode or No Output
mode without output.
b) Turn off the output breaker of this unit, and then turn off the input
breaker of this unit.
c) After it shuts down, you can turn off the battery breaker (for long-
run model) and remove the parallel and share current cables. And
then remove the unit from the parallel system.
•
Second method:
a) If the bypass is abnormal, you can not remove the UPS without
interruption. You must cut off the load and shut down the system first.
b) Make sure the bypass setting is enabled in each UPS and then
turn off the running system. All UPSs will transfer to Bypass mode.
Remove all the maintenance bypass covers and set the maintenance
switches from “UPS” to “BPS” position. Turn off all the input
breakers and battery breakers in parallel system.
c) Turn off the output breaker and remove the parallel cable and share
current cable of the UPS which you want to remove. Now, you can
remove the UPS from parallel system.
d) Turn on the input breaker of the remaining UPS and the system will
transfer to Bypass mode. Set the maintenance switches from “BPS”
to “UPS position and put the maintenance bypass covers back on.
d) Turn on the remaining UPS according to the previous section.
● Before turning on the parallel system to activate inverter, make sure
that all unit’s maintenance switch at the same position.
● When parallel system is turned on, please do not operate the
maintenance switch of any unit.
● Please DO NOT enable the ECO mode in parallel system.
WARNING (Only for the parallel system)
3.6. Fault Code
Fault code Fault event Fault code Fault event
01 Bus start failure 43 Overload
02 Bus over 46 Incorrect UPS setting
03 Bus under 47
MCU communication
failure
04 Bus unbalance 48
Two DSP firmware
versions are
incompatible in parallel
system.
06 Converter over current 60
Bypass phase short
circuited
11 Inverter soft start failure 61
Bypass SCR short
circuited
12 High inverter voltage 62
Bypass SCR open
circuited
15
Inverter B output(line to
neutral) short circuited
63
Voltage waveform
abnormal in A phase
16
Inverter C output(line to
neutral) short circuited
64
Voltage waveform
abnormal in B phase
17
Inverter A-B output (line
to line) short circuited
65
Voltage waveform
abnormal in C phase
18
Inverter B-C output (line
to line) short circuited
66
Inverter current detect
abnormal
19
Inverter C-A output (line
to line) short circuited
67
Bypass O/P short
circuited
1A
Inverter A negative
power fault
68
Bypass O/P line to line
short
circuited
1B
Inverter B negative
power fault
69
Inverter SCR short
circuited
1C
Inverter C negative
power fault
6C
BUS voltage drops too
fast
21
Battery SCR short
circuited
6D
Current error value
detect
23
Inverter relay circuited
open
6E SPS power error