4-11
4
ௐ
ௐ
Communication Interfaces
No. Event Description
1 None No set-up.
2 Generator Status Generator status detection.
3 Battery Ground Fail Battery leakage detection.
4
External Battery Breaker
Detection
Status detection of the external battery cabinet’s
breaker or switch.
4.1.7 Parallel Communication Cards
The UPS has two parallel communication cards, which are master parallel communication
card and backup parallel communication card. Each card has one LED indicator. Please see
Figure 4-11 for their location.
If both cards work normally, the master parallel communication card’s LED indicator will
illuminate green and the backup parallel communication card’s LED indicator will illuminate
yellow.
If one card works normally and the other works abnormally, the normal card’s LED indicator
will illuminate green and the abnormal card’s LED indicator will illuminate red.
During initialization process, both cards’ LED indicators flash yellow.
DISPLAY
REPO
NC NO
EXT. BATT
TEMP.
BT1 BT2
EXT.SWITCH
STATUS
S1 S2
S3 S4
BT3
BT4
O/P DRY
CONTACT
USB RS-232
P1 P2 P3
P4
P5 P6
I/P DRY
CONTACT
P1 P2
BATT.
START
BATT.
START
P3
P4
PARALLEL
PAR ALL EL
Master Parallel Communication Card’s
LED Indicator
Master Parallel
Communication Card
Backup Parallel Communication Card’s
LED Indicator
Backup Parallel
Communication Card
(Figure 4-11: Location of Parallel Communication Cards and Their LED Indicators)
4.1.8 Parallel Ports
The parallel ports are used to connect parallel UPSs to increase the system capacity and
redundancy. With the provided parallel cable, up to eight UPS units with the same capacity,
voltage and frequency can be paralleled. To enhance parallel reliability, please adopt Daisy
Chain method (see Figure 5-41 & Figure 5-43) to execute parallel configuration.
WARNING:
The provided parallel cable is placed in the accessory package. Using other types
of cables to connect the parallel UPSs may cause parallel failure, malfunctions and
accidents.
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