Parallel Ports - Delta Modulon DPH Series User Manual

You can purchase the optional parallel communication card and install it into the parallel
communication card slot. For the slot location, please refer to Figure 4-12.
DISPLAY
EXT. BATT EXT.SWITCH
TEMP. STATUS
BT1 BT2 S1 S2
REPO
NC NO
BT3 BT4 S3 S4
When there are two parallel communication cards installed in the UPS, the lower one is
named the master parallel communication card (the card is a standard accessory) and
the upper one is called the backup parallel communication card (the card is an optional
accessory). Please refer to Figure 4-13 for the two cards and their LED indicators' location.
Backup Parallel Communication
DISPLAY
EXT. BATT EXT.SWITCH
TEMP. STATUS
S1 S2
BT1 BT2
REPO
NC NO
BT3 BT4
S3 S4
Master Parallel Communication
(Figure 4-13: Location of Master and Backup Parallel Communication Cards and their LED Indicators)
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.

4.1.8 Parallel Ports

The parallel ports (see Figure 4-12) 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, frequency and version can be paralleled. For version
information, please refer to 7.11.7 Version & S/N. Please only use the provided parallel
cable to parallel the UPS units. Otherwise, parallel functions will fail. To enhance parallel
reliability, please adopt Daisy Chain method (see Figure 5-17 & Figure 5-19) to execute
Parallel Communication Card Slot
O/P DRY I/P DRY
CONTACT CONTACT
P1 P2 P3 P1 P2
P4 P5 P6 P3 P4 PARALLEL
(Figure 4-12: Location of Parallel Communication Card Slot)
Card's LED Indicator
O/P DRY I/P DRY
CONTACT CONTACT
P1 P2
P1 P2 P3
PARALLEL
P4 PARALLEL
P5 P6 P3 P4
Card's LED Indicator
USB RS-232
Backup Parallel
Communication Card
USB RS-232
Master Parallel
Communication Card
4-11
4 Communication Interfaces
BATT.
START
BATT.
START
BATT.
START
BATT.
START