Single Input; Online Mode_ Single Input_ Single Unit - Delta Modulon DPH Series User Manual

The UPS runs in eight basic operation modes, which are online mode, battery mode, bypass
mode, manual bypass mode, ECO mode, frequency conversion mode, green mode and energy
recycle mode. Besides these eight operation modes, the UPS is also designed for common battery
application and hot standby redundancy. Please see the following sections for relevant information.
NOTE:
1. In this user manual, the meaning of Q1, Q2 and Q3 represents the following.
2. Only UPSs with the same capacity, voltage and frequency can be paralleled. Please only
use the provided parallel cable to parallel the UPS units; otherwise, parallel functions
will fail. For UPS parallel information and application, please contact Delta service
personnel.
3.1

Single Input

3.1.1 Online Mode_ Single Input_ Single Unit

In online mode, the main AC source supplies AC power via the Input/ Bypass Breaker (Q1)
After receiving the DC power, the inverter converts it into clean and stable AC power to the
connected critical loads via the Output Breaker (Q3). Please refer to Figure 3-1. During
online mode, the UPS's tri-color LED illuminates green and the text 'On-Line' appears in
the upper right corner of the screen.
MAIN
Batteries
Modulon DPH Series
Code
Q1
Q2
Q3
Q2
Rectifier
Q1
(Figure 3-1: Online Mode Diagram_ Single Input Single Unit)
Input/ Bypass Breaker
Manual Bypass Breaker
Output Breaker
Static Switch
Inverter
3-2
Meaning
LOAD
Q3