Parallel Communication Cards; Parallel Ports - Delta Modulon DPH series User Manual

No.
1 None
2 Generator Status
3 Battery Ground Fail
External Battery Breaker
4
Detection

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.
Backup Parallel Communication Card's
DISPLAY
EXT. BATT EXT.SWITCH
TEMP. STATUS
BT1 BT2 S1 S2
REPO
NC NO
BT3 BT4 S3 S4
Master Parallel Communication Card's
(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.
Event
LED Indicator
O/P DRY I/P DRY
CONTACT CONTACT
P1 P2 P3 P1 P2
PARALLEL
P4 P5 P6 P3 P4 PARALLEL
LED Indicator
No set-up.
Generator status detection.
Battery leakage detection.
Status detection of the external battery cabinet's
breaker or switch.
Backup Parallel
Communication Card
USB RS-232
Master Parallel
Communication Card
4-11
4 Communication Interfaces
Description
BATT.
START
BATT.
START