OPTI-UPS MD120L - Manual (Page 33)

30 Chapter 3 Operating Instructions
30
3.2.1 Normal Module Start
This procedure must be followed when turning on the UPS from a fully powered down condition.
The operating procedures are as follows:
警告 危 险
Warning
This procedure results in mains voltage being applied to the UPS output terminals. If any load
equipment is connected to the UPS output terminals please check with the load user that it is safe to
apply power. If the load is not ready to receive power then ensure that it is safely to close the output
switch of external distribution cabinet.
1. Close UPS output switch and input switch in turns.
The LCD starts up at this time. The Rectifier indicator flashes during the startup of rectifier. The
rectifier enters normal operation state, and after about 30s, the rectifier indicator goes steady green. After
initialization, the bypass static switch closes. The UPS Mimic LEDs will indicate as shown in table 3-1:
Table 3-1 Indicator status
LED Status
Rectifier indicator Green
Battery indicator Red
Bypass indicator Green
Inverter indicator Off
Load indicator Green
Status indicator Green
警告 危 险
Note
The output circuit breaker must be closed first, followed by input circuit breaker, or the rectifier cannot
be started, and alarm “rectifier failure”.
The inverter starts up at this time, the inverter indicator flashes. After the rectifier enters normal
operation state, UPS power supply will transfer from bypass to inverter, then the bypass indicator turns
off, and load indicator lights. The status of indicators is shown in table 3-2.
Table 3-2 Indicator Status
LED Status
Rectifier indicator Green
Battery indicator Red
Bypass indicator Off
Inverter indicator Green
Load indicator Green
Status indicator Green
2. Close external battery switch, battery indicator turns off, a few minutes later, the battery will be
charged by UPS which will enter normal mode operation. The indicator status is shown in table 3-3.
Table 3-3 Indicator status
LED Status
Rectifier indicator Green
Battery indicator Green
Bypass indicator Off
Inverter indicator Green
Load indicator Green
Status indicator Green
3.2.2 Operating steps of Battery cold Start
1. Check if the batteries have been connected, close the external battery switch.